cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coronal origin of the polarization of the high-energy emission of Cygnus X-1
Creators: name: Romero, G. E.
name: Vieyro, F. L.
name: Chaty, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Cygnus X-1 is the candidate with the highest probability of containing a black hole among the X-ray binary systems in the Galaxy. It is also by far the most often studied of these objects. Recently, the International Gamma-Ray Astrophysics Laboratory Imager onboard then Integral satellite ({\it INTEGRAL}/IBIS) detected strong polarization in the high-energy radiation of this source, between 400 keV and 2 MeV. This radiation has been attributed to a jet launched by the black hole. We consider whether the corona around the black hole might be the site of production of the polarized emission instead of the jet. We studied self-consistently the injection of nonthermal particles in the hot, magnetized plasma around the black hole. We show that both the high-energy spectrum and polarization of Cygnus X-1 in the low-hard state can originate in the corona, without needing to invoke a jet. We estimate the degree of polarization in the intermediate state, where there is no jet, to provide a tool to test our model. Contrary to the commonly accepted view, the jet might not be the source of the MeV polarized tail in the spectrum of Cygnus X-1.
description: 4 pages, 2 figures, accepted in A&A Letters
Bottom-up growth of monolayer honeycomb SiC
Creators: name: Polley, C. M.
name: Fedderwitz, H.
name: Balasubramanian, T.
name: Zakharov, A. A.
name: Yakimova, R.
name: Bäcke, O.
name: Ekman, J.
name: Dash, S. P.
name: Kubatkin, S.
name: Lara-Avila, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The long theorized two-dimensional allotrope of SiC has remained elusive amid the exploration of graphenelike honeycomb structured monolayers. It is anticipated to possess a large direct band gap (2.5 eV), ambient stability, and chemical versatility. While $sp^{2}$ bonding between silicon and carbon is energetically favorable, only disordered nanoflakes have been reported to date. Here we demonstrate large-area, bottom-up synthesis of monocrystalline, epitaxial monolayer honeycomb SiC atop ultrathin transition metal carbide films on SiC substrates. We find the 2D phase of SiC to be almost planar and stable at high temperatures, up to 1200°C in vacuum. Interactions between the 2D-SiC and the transition metal carbide surface result in a Dirac-like feature in the electronic band structure, which in the case of a TaC substrate is strongly spin-split. Our findings represent the first step towards routine and tailored synthesis of 2D-SiC monolayers, and this novel heteroepitaxial system may find diverse applications ranging from photovoltaics to topological superconductivity.
title: Vers une démarche d'enquête en histoire avec des élèves ayant des troubles du langage oral et/ou écrit d'une classe spécialisée
title: Vers une démarche d'enquête en histoire avec des élèves ayant des troubles du langage oral et/ou écrit d'une classe spécialisée
titleType: AlternativeTitle
Creators: name: Burnat, Marie-Pierre
Publisher: name: Unknown
Year: 0
Subjects: subject: Troubles du langage
subject: Démarche d’enquête
subject: Enseignement de l’histoire
subject: Aménagements
subject: MER
subject: Classe spécialisée

description: L’histoire est une discipline réputée difficile à enseigner. En Suisse romande, le plan d’étude vise à développer chez les élèves des compétences de haut niveau intellectuel dans ce domaine. Des moyens d’enseignement ont été conçus pour aider les enseignants à mettre en place des situations d’enseignement-apprentissage permettant aux élèves de s’engager dans une démarche d’enquête historique. Ces outils élaborés par l’UMER (Unité des Moyens d’Enseignement Romands) à la demande de la CIIP (Conférence Intercantonale de l’Instruction Publique) sont de qualité ; ils ne comportent malheureusement pas de pistes d’aménagement pour les élèves à besoins particuliers. L’objet de cette recherche a été de sélectionner les aménagements les plus pertinents permettant à des élèves concernés par des troubles du langage d’une classe spécialisée de s’engager dans une démarche d’enquête historique. Le dispositif proposé par les MER (Moyens d’Enseignement Romands) a été adapté en prenant en compte : les prérequis nécessaires, ceux disponibles chez la population étudiée et les aménagements retenus. Les caractéristiques de ce dispositif adapté sont présentées dans ce travail, ainsi que les résultats issus de son expérimentation en classe. Au cours de cette recherche, il a fallu prioritairement construire un référentiel historique explicite et apprendre aux élèves à faire une analyse de source historique. Ces deux éléments de base ont été travaillés avec succès. Mais l’étude n’a pas permis de vérifier si les élèves seraient capables de réinvestir les savoirs acquis dans un processus complet de démarche d’enquête. Les principales causes sont : les impératifs du contexte institutionnel (notamment les prises en charge externes à la classe) et le temps consacré à la construction des prérequis permettant l’accès à la démarche.
Les transformations silencieuses 1. Hirasawa Kurō (平澤九朗, 1772-1840) & Katō Bakutai (加藤麦袋, 1861-1943)
Creators: name: Fajole, Florent
Publisher: name: Zenodo
Year: 2023
Subjects: Les transformations silencieuses, François Jullien, Wabi-cha, procès, esthétique des états transitionnels, Wabi-Sabi, Hirasawa Kurō, Katō Bakutai, Ōtagaki Rengetsu, Ki no Asomi Kahito, Man'yōshū, Haruo Shirane

description: Les transformations silencieuses forment une série d'articles inspirés par l'ouvrage éponyme de François Jullien, publié en 2009, et consacrés aux diverses formes que revêt l'esthétique des états transitionnels concourant à la voie du thé (wabi-cha). Le premier chapitre aborde le thème de l'espace relationnel et de la précarité de l'existant dans le travail des céramistes japonais Hirasawa Kurō (平澤九朗, 1772-1840), Katō Bakutai (加藤麦袋, 1861-1943), et Ōtagaki Rengetsu (太田垣 蓮月, 1791-1875).
description: {"references": ["Fajole, Florent. (2023). Les transformations silencieuses 1. Hirasawa Kur\u014d (\u5e73\u6fa4\u4e5d\u6717, 1772-1840) & Kat\u014d Bakutai (\u52a0\u85e4\u9ea6\u888b, 1861-1943)"]}
The Swansong of the Galactic Center Source X7: An Extreme Example of Tidal Evolution near the Supermassive Black Hole
Creators: name: Ciurlo, Anna
name: Campbell, Randall D.
name: Morris, Mark R.
name: Do, Tuan
name: Ghez, Andrea M.
name: Becklin, Eric E.
name: Bentley, Rory O.
name: Chu, Devin S.
name: Gautam, Abhimat K.
name: Gursahani, Yash A.
name: Hees, Aurelien
name: O'Neil, Kelly Kosmo
name: Lu, Jessica R.
name: Martinez, Gregory D.
name: Naoz, Smadar
name: Sakai, Shoko
name: Schoedel, Rainer
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present two decades of new high-angular-resolution near-infrared data from the W. M. Keck Observatory that reveal extreme evolution in X7, an elongated dust and gas feature, presently located half an arcsecond from the Galactic Center supermassive black hole. With both spectro-imaging observations of Br-γ line-emission and Lp (3.8 μm) imaging data, we provide the first estimate of its orbital parameters and quantitative characterization of the evolution of its morphology and mass. We find that the leading edge of X7 appears to be on a mildly eccentric (e~0.3), relatively short-period (170 years) orbit and is headed towards periapse passage, estimated to occur in ~2036. Furthermore, our kinematic measurements rule out the earlier suggestion that X7 is associated with the stellar source S0-73 or with any other point source that has overlapped with X7 during our monitoring period. Over the course of our observations, X7 has (1) become more elongated, with a current length-to-width ratio of 9, (2) maintained a very consistent long-axis orientation (position angle of 50 deg), (3) inverted its radial velocity differential from tip to tail from -50 to +80 km/sec, and (4) sustained its total brightness (12.8 Lp magnitudes at the leading edge) and color temperature (425 K), which suggest a constant mass of ~50 MEarth. We present a simple model showing that these results are compatible with the expected effect of tidal forces exerted on it by the central black hole and we propose that X7 is the gas and dust recently ejected from a grazing collision in a binary system.
description: accepted by ApJ, 20 pages, 16 figures
Modeling X-ray Emission Around Galaxies
Creators: name: Anderson, Michael E.
name: Bregman, Joel N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Extended X-ray emission can be studied either spatially (through its surface brightness profile) or spectrally (by analyzing the spectrum at various locations in the field). Both techniques have advantages and disadvantages, and when the emission becomes particularly faint and/or extended, the two methods can disagree. We argue that an ideal approach would be to model the events file directly, and therefore to use both the spectral and spatial information which are simultaneously available for each event. In this work we propose a first step in this direction, introducing a method for spatial analysis which can be extended to leverage spectral information simultaneously. We construct a model for the entire X-ray image in a given energy band, and generate a likelihood function to compare the model to the data. A critical goal of this modeling is disentangling vignetted and unvignetted backgrounds through their different spatial distributions. Employing either maximum likelihood or Markov Chain Monte Carlo, we can derive probability distribution functions for the source and background parameters together, or we can fit and subtract the background, leaving the description of the source non-parametric. We calibrate and demonstrate this method against a variety of simulated images, and then apply it to Chandra observations of the hot gaseous halo around the elliptical galaxy NGC 720. We are able to follow the X-ray emission below a tenth of the background, and to infer a hot gas mass within 35 kpc of 4-5x10^9 Msun, with some indication that the profile continues to at least 50 kpc and that it steepens as the radius increases. We derive much stronger constraints on the surface brightness profile than previous studies, which employed the spectral method, and we show that the density profiles inferred from these studies are in conflict with the observed surface brightness profile. (abridged)
description: 21 pages, 16 figures. Accepted to ApJ
Center to limb variation of transition region Doppler shift in active regions
Creators: name: Rajhans, Abhishek
name: Tripathi, Durgesh
name: Kashyap, Vinay L.
name: Klimchuk, James A.
name: Ghosh, Avyarthana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Studying Doppler shifts provides deeper insights into the flow of mass and energy in the solar atmosphere. We perform a comprehensive measurement of Doppler shifts in the transition region and its center-to-limb variation (CLV) in the strong field regions ($|\textbf{B}| \geq$ 50 G) of 50 active regions (ARs), using the \ion{Si}{4} 1394~Å line recorded by the Interface Region Imaging Spectrometer(IRIS). To locate the ARs and identify strong field regions, we have used the magnetograms obtained by the Helioseismic and Magnetic Imager (HMI). We find that in strong field regions, on average, all the ARs show mean redshifts ranging between 4{--}11~ km/s, which varies with ARs. These flows show a mild CLV, with sizable magnitudes at the limb and substantial scatter at the mid-longitude range. Our observations do not support the idea that redshifts in the lower transition region (T $<\sim$ 0.1 MK) are produced by field-aligned downflows as a result of impulsive heating and warrant alternative interpretation, such as downflow of type-\rm{II} spicules in the presence of a chromospheric wall created by cooler type-\rm{I} spicules.
description: Accepted for publication in the Astrophysical Journal on 16th January 2023
title: Attention à la technologie... : Exploration des effets d'un dispositif de rétroaction de l'attention auprès d'élèves de 6ème année primaire durant une activité de lecture
title: Attention à la technologie... : Exploration des effets d'un dispositif de rétroaction de l'attention auprès d'élèves de 6ème année primaire durant une activité de lecture
titleType: AlternativeTitle
Creators: name: Polli, Lucia
Publisher: name: Unknown
Year: 0
Subjects: subject: attention
subject: autonomie
subject: autorégulation
subject: automonitorage
subject: neurofeedback
subject: EEG mobile (PEGGT)

description: Remarquant la difficulté de certains élèves à réaliser des tâches scolaires en autonomie, considérant que ces activités sont tributaires de processus complexes d’autogestion, dont la capacité à mobiliser l’attention, ce travail explore les effets d’un dispositif technologique de rétroaction en temps réel du niveau de l’attention (Technologie EEG portable et interface informatique). Seize élèves âgés de 10-11 ans ont participé à cette recherche quantitative quasi expérimentale. Durant la lecture d’un texte et les réponses à un questionnaire, les élèves ont été exposés à trois variables indépendantes : sans utilisation du dispositif, avec l’EEG portable, avec l’EEG portable et rétroaction visuelle. Les résultats indiquent que, avec le dispositif utilisé, ni l’attention ni les performances sont susceptibles d’augmenter lors d’automonitorage visuel de l’attention. Cependant, en portant le casque EEG, les élèves ont eu moins de comportements d’inattention durant la tâche et ont exécuté l’activité de manière plus rapide ; ils ont montré de l’intérêt et de la motivation à travailler avec ce dispositif. L’application d’une telle technologie pourrait avoir plus d’intérêt pour une partie des élèves présentant des difficultés et des caractéristiques spécifiques.
Massive pre-main-sequence stars in M17 -- Modelling hydrogen and dust in MYSO disks
Creators: name: Backs, Frank
name: Poorta, J.
name: Rab, Ch.
name: Derkink, A. R.
name: de Koter, A.
name: Kaper, L.
name: Ramírez-Tannus, M. C.
name: Kamp, I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The young massive-star-forming region M17 contains optically visible massive pre-main-sequence stars that are surrounded by circumstellar disks. Such disks are expected to disappear when these stars reach the main sequence. The physical and dynamical structure of these remnant disks are poorly constrained, especially the inner regions where accretion, photo-evaporation, and companion formation and migration may be ongoing. We aim to constrain the physical properties of the inner parts of the circumstellar disks of massive young stellar objects B243 (6 Msun) and B331 (12 Msun), two systems for which the central star has been detected and characterized previously despite strong dust extinction. Two-dimensional radiation thermo-chemical modelling with ProDiMo of double-peaked hydrogen lines of the Paschen and Brackett series observed with X-shooter was used to probe the properties of the inner disks. Additionally, the dust structure was studied by fitting the optical and near-infrared spectral energy distribution. B243 features a hot gaseous inner disk with dust at the sublimation radius at 3 AU. The disk appears truncated at roughly 6.5 AU; a cool outer disk of gas and dust may be present, but it cannot be detected with our data. B331 also has a hot gaseous inner disk. A gap separates the inner disk from a colder dusty outer disk starting at up to 100 AU. In both sources the inner disk extends to almost the stellar surface. Chemistry is essential for the ionization of hydrogen in these disks. The lack of a gap between the central objects and these disks suggests that they accrete through boundary-layer accretion. This would exclude the stars having a strong magnetic field. Their structures suggest that both disks are transitional in nature, that is to say they are in the process of being cleared, either through boundary-layer accretion, photo-evaporation, or through companion activity.
description: 18 pages, 16 figures. Accepted for publication in A&A
Systematic of Particle Thermal Freeze-out in a Hadronic Fireball at RHIC
Creators: name: Uddin, Saeed
name: Bhat, Riyaz Ahmed
name: Bashir, Inam-ul
name: Bashir, Waseem
name: Ahmad, Jan Shabir
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We attempt to describe the rapidity and transverse momentum spectra of strange as well as non-strange hadrons e.g. cascade,cascadebar, lambda , lambdabar, proton, protonbar,(omega+omegabar, Kaon, anti-Kaon and their ratios in the ultra-relativistic collisions of gold nuclei at (Root sNN)=200 GeV. This is done by using a statistical thermal freeze-out model which incorporates the rapidity (collision) axis as well as transverse direction boosts developed within an expanding hot and dense hadronic fluid (fireball) till the final freeze-out. We determine the thermo-chemical freeze-out conditions particularly in terms of the temperature, baryon chemical potential and collective flow effect parameters for different particle species. The parameters indicate occurrence of freeze-out of the singly and doubly strange hyperon species at somewhat earlier times during the evolution of the fireball. The experimental data of the transverse momentum and rapidity distribution are well reproduced. The contribution of heavier hadronic resonance decay is taken into account.
description: 23 Pages, 11 Figures
Spiral Arms in Broad-line Regions of Active Galactic Nuclei. II. Loosely Wound Cases: Reverberation Properties
Creators: name: Du, Pu
name: Wang, Jian-Min
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: There has recently been growing evidence that broad-line regions (BLRs) in active galactic nuclei have regular substructures, such as spiral arms, which are supported by the fact that the radii of BLRs measured by RM observations are generally consistent with the self-gravitating regions of accretion disks. We have shown in Paper I that the spiral arms excited by the gravitational instabilities in these regions may exist in some disk-like BLRs. As the second paper of the series, we investigate the loosely wound spiral arms excited by gravitational instabilities in disk-like BLRs and present their observational characteristics. Following the treatments of Adams et al. (1989), we solve the governing integro-differential equation by a matrix scheme. The emission-line profiles, velocity-delay maps, and velocity-resolved lags of the BLR spiral arms are calculated. We find that the spiral arms can explain some phenomena in observations: (1) the emission-line profiles in the mean and rms spectra have different asymmetries, (2) some velocity-delay maps, e.g., NGC 5548, have complex sub-features (incomplete ellipse), (3) the timescales of the asymmetry changes in emission-line profiles (rms spectra) are short. These features are attractive for modeling the observed line profiles and the properties of reverberation, and for revealing the details of the BLR geometry and kinematics.
description: 24 pages, 14 figures, accepted for publication in Astronomy & Astrophysics
NW-FVA Waldschutzinfo Nr. 2022-05
Creators: name: Plašil, Pavel
name: Bothe, Elke
name: Graw, Ines
name: Rohde, Martin
Publisher: name: Zenodo
Year: 2022
Subjects: Waldschutzinfo
Kieferngroßschädlinge
Forleule
Nonne
Kiefernspinner
Kiefernspanner
Kiefernprozessionsspinner
Kiefernbuschhornblattwespen
Pheromonfallen

description: Waldschutzinfo 2022-05 der Nordwestdeutschen Forstlichen Versuchsanstalt (NW-FVA) Göttingen zum Thema Ergebnisse der Überwachung der Kieferngroßschädlinge und Nonne 2022 in Niedersachsen und Sachsen-Anhalt.
The Breakthrough Listen Search for Intelligent Life: A Laser Search Pipeline for the Automated Planet Finder
Creators: name: Zuckerman, Anna
name: Ko, Zoe
name: Isaacson, Howard
name: Croft, Steve
name: Price, Danny
name: Lebofsky, Matt
name: Siemion, Andrew
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Search for Extraterrestrial Intelligence (SETI) has traditionally been conducted at radio wavelengths, but optical searches are well-motivated and increasingly feasible due to the growing availability of high-resolution spectroscopy. We present a data analysis pipeline to search Automated Planet Finder (APF) spectroscopic observations from the Levy Spectrometer for intense, persistent, narrow bandwidth optical lasers. We describe the processing of the spectra, the laser search algorithm, and the results of our laser search on 1983 spectra of 388 stars as part of the Breakthrough Listen search for technosignatures. We utilize an empirical spectra-matching algorithm called SpecMatch-Emp to produce residuals between each target spectrum and a set of best-matching catalog spectra, which provides the basis for a more sensitive search than previously possible. We verify that SpecMatch-Emp performs well on APF-Levy spectra by calibrating the stellar properties derived by the algorithm against the SpecMatch-Emp library and against Gaia catalog values. We leverage our unique observing strategy, which produces multiple spectra of each target per night of observing, to increase our detection sensitivity by programmatically rejecting events which do not persist between observations. With our laser search algorithm we achieve a sensitivity equivalent to the ability to detect an 84 kW laser at the median distance of a star in our dataset (78.5 ly). We present the methodology and vetting of our laser search, finding no convincing candidates consistent with potential laser emission in our target sample.
description: 24 pages, 12 figures. Accepted to The Astronomical Journal
Karte an Sigmund Landsinger
Creators: name: Böcklin, Arnold
name: Böcklin, Angela
name: Przibram, Ludwig von
Publisher: name: [s.n.]
Year: 1898

description: von A. Böcklin u. Frau, Przibram u. Frau
description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
Emergence of Cooperation in Non-scale-free Networks
Creators: name: Zhang, Yichao
name: Aziz-Alaoui, M. A.
name: Bertelle, Cyrille
name: Zhou, Shi
name: Wang, Wenting
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computer Science and Game Theory (cs.GT)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Evolutionary game theory is one of the key paradigms behind many scientific disciplines from science to engineering. Previous studies proposed a strategy updating mechanism, which successfully demonstrated that the scale-free network can provide a framework for the emergence of cooperation. Instead, individuals in random graphs and small-world networks do not favor cooperation under this updating rule. However, a recent empirical result shows the heterogeneous networks do not promote cooperation when humans play a Prisoner's Dilemma. In this paper, we propose a strategy updating rule with payoff memory. We observe that the random graphs and small-world networks can provide even better frameworks for cooperation than the scale-free networks in this scenario. Our observations suggest that the degree heterogeneity may be neither a sufficient condition nor a necessary condition for the widespread cooperation in complex networks. Also, the topological structures are not sufficed to determine the level of cooperation in complex networks.
description: 6 pages, 5 figures
UniSAFE D3.1 Theoretical and conceptual framework
Creators: name: Strid, Sofia
name: Humbert, Anne Laure
name: Hearn, Jeff
name: Bondestam, Fredrik
name: Husu, Liisa
Publisher: name: Zenodo
Year: 2021
Subjects: Gender Based Violence, Feminist theory, 7P model, intersectionality, gender+

description: There are different understandings of both gender and gender-based violence in different national and organisational contexts. While recognising the potential conflicts and tensions emanating from different strands of epistemology, ontology and contexts, UniSAFE is primarily informed by a feminist understanding of both gender and violence. The aim of the UniSAFE theoretical and conceptual framework is to frame the overall study – including data collection and analysis on micro, meso and macro levels and their interrelations – and to highlight key debates and contestations in the research field of gender-based violence in RPOs (Research Performing Organisations, including universities). The framework is developed in order to contribute to the data collection and analysis of gender-based violence in academic environments and research workplaces in Europe. The underlying approach is multi-level and holistic, and informed by gender theory, intersectionality, and feminist violence studies: these are applied to both the collection and analysis of evidence, and to its operationalisation into tools and dissemination. Such an approach, in turn, requires approaching gender equality and gender-based violence in institutions from an organisational violence perspective, rather than approaching gender-based violence only from a gender equality perspective, or indeed an individualist perspective. To these ends, the UniSAFE theoretical and conceptual framework outlines the key concepts used in the project and proposes forms of gender-based violence to cover and the definitions for these forms, with the whole project anchored in feminist violence studies. It introduces the 7P model at the heart of the project, defining each of its elements in turn. How these concepts relate to each other are then provided, as well as an operationalisation in terms of different strands of data collection. This informs the work in the following work packages and assists in the systematisation of data collection and analysis.
Karte an Sigmund Landsinger
Creators: name: Böcklin, Angela
name: Böcklin, Arnold
name: Böcklin, Carlo
name: Böcklin, Felix
name: Böcklin, Any
Publisher: name: [s.n.]
Year: 1898

description: von Angela Böcklin nebst Gatten, Felice Böcklin, Carlo Böcklin, Any Böcklin, Peter und Frau
description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
Ground-based detection of the near-infrared emission from the dayside of WASP-5b
Creators: name: Chen, Guo
name: van Boekel, Roy
name: Madhusudhan, Nikku
name: Wang, Hongchi
name: Nikolov, Nikolay
name: Seemann, Ulf
name: Henning, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (Abridged) WASP-5b is a highly irradiated dense hot Jupiter orbiting a G4V star every 1.6 days. We observed two secondary eclipses of WASP-5b in the J, H and K bands simultaneously. Thermal emission of WASP-5b is detected in the J and K bands. The retrieved planet-to-star flux ratios in the J and K bands are 0.168 +0.050/-0.052% and 0.269+/-0.062%, corresponding to brightness temperatures of 2996 +212/-261K and 2890 +246/-269K, respectively. No thermal emission is detected in the H band, with a 3-sigma upper limit of 0.166%, corresponding to a maximum temperature of 2779K. On the whole, our J, H, K results can be explained by a roughly isothermal temperature profile of ~2700K in the deep layers of the planetary dayside atmosphere that are probed at these wavelengths. Together with Spitzer observations, which probe higher layers that are found to be at ~1900K, a temperature inversion is ruled out in the range of pressures probed by the combined data set. While an oxygen-rich model is unable to explain all the data, a carbon-rich model provides a reasonable fit but violates energy balance.
description: 13 pages, 9 figures, accepted for publication in A&A
The Complex X-ray Obscuration Environment in the Radio Loud Type 2 Quasar 3C 223
Creators: name: LaMassa, Stephanie M.
name: Yaqoob, Tahir
name: Tzanavaris, Panayiotis
name: Gandhi, Poshak
name: Heckman, Timothy
name: Lansbury, George
name: Siemiginowska, Aneta
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: 3C 223 is a radio loud, Type 2 quasar at $z=0.1365$ with an intriguing XMM-Newton spectrum that implicated it as a rare, Compton-thick ($N_{\rm H} \gtrsim 1.25 \times 10^{24}$ cm$^{-2}$) active galactic nucleus (AGN). We obtained contemporaneous XMM-Newton and NuSTAR spectra to fit the broad-band X-ray spectrum with the physically-motivated MYTorus and borus02 models. We confirm earlier results that the obscuring gas is patchy with both high (though not Compton-thick) levels of obscuration ($N_{\rm H} > 10^{23}$ cm$^{-2}$) and gas clouds with column densities up to an order of magnitude lower. The spectral fitting results indicate additional physical processes beyond those modeled in the spectral grids of MYTorus and borus02 impact the emergent spectrum: the Compton-scattering region may be extended beyond the putative torus; a ring of heavy Compton-thick material blocks most X-ray emission along the line of sight; or the radio jet is beamed, boosting the production of Fe K$α$ line photons in the global medium compared with what is observed along the line of sight. We revisit a recent claim that no radio loud Compton-thick AGN have yet been conclusively shown to exist, finding three reported cases of radio loud AGN with global average (but not line-of-sight) column densities that are Compton-thick. Now that it is possible to separately determine line-of-sight and global column densities, inhomogeneity in the obscuring medium has consequences for how we interpet the spectrum and classify an AGN as "Compton-thick."
description: accepted for publication in ApJ; Figure 3 illustrates possible physical processes shaping emergent X-ray spectrum
Differenzierungsprozesse im Bereich der Migration: Perspektiven für eine differenzsensible, macht- und herrschaftskritische Soziale Arbeit
Creators: name: Grauer, Bettina
Publisher: name: Zenodo
Year: 2022

description: In der vorliegenden Bachelorarbeit mit dem Titel «Differenzierungsprozesse im Bereich der Migration» geht die Autorin Bettina Grauer folgender Fragestellung nach: Wie sind Differenzierungsprozesse in der Sozialen Arbeit vor dem Hintergrund postkolonialer Überlegungen kritisch zu diskutieren? Überlegungen zum Umgang mit Differenz sind grundlegend für die Soziale Arbeit, denn erst durch das Herstellen von sozialen Unterschieden können Personen als Adressat*innen der Sozialen Arbeit identifiziert werden. Menschen, welche von gesellschaftlichen Normen abweichen, werden als «anders» und «sozial problematisch» markiert und kommen so in die Zielgruppe der Sozialen Arbeit, wo es sie zu bearbeiten, zu integrieren und zu normalisieren gilt. Der Ausgangspunkt für eine sozialarbeiterische Intervention ist demnach jeweils die Normabweichung bzw. Andersheit der Adressat*innen. Normen entstehen vor dem Hintergrund gesellschaftlicher Macht- und Herrschaftsverhältnissen und tragen dazu bei, soziale Hierarchien und Privilegien aufrechtzuerhalten. Durch eine Auseinandersetzung mit der postkolonialen Theorie wird in dieser Arbeit analysiert, inwiefern die Soziale Arbeit an der (Re-)Produktion von Normen und Differenzen beteiligt ist. Postkoloniale Perspektiven hinterfragen essentialistische und eurozentristische Diskurse und reflektieren die Auswirkungen diskriminierender (post-)kolonialer Denkmodelle auf die migrationsbezogene Soziale Arbeit. Diese Bachelorarbeit kommt zum Schluss, dass postkoloniale Perspektiven eine bedeutende Ressource für die Soziale Arbeit darstellen, um einen differenzsensiblen, macht- und herrschaftskritischen Umgang mit Differenz zu entwickeln.
description: + Code Diss LU: hslusa basa + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Sozialarbeit, 2022 + NL-Code: NLLUHSA202209
Technoference and Relationship Formation Impressions
Creators: name: Sbarra, David
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: This is a preregistration of an analytic plan for a secondary data analysis. The data have not yet been analyzed in any way and here we detail our a priori hypotheses. We have organized this preregistration using the AsPredicted template. Our responses are longer and more detailed than AsPredicted allows, thus we are registering this analytic plan here in advance of any data analysis.
Probing Jet-Torus Interaction in the Radio Galaxy NGC 1052 by Sulfur-Bearing Molecules
Creators: name: Kameno, Seiji
name: Sawada-Satoh, Satoko
name: Impellizzeri, C. M. Violette
name: Kohno, Kotaro
name: Martín, Sergio
name: Espada, Daniel
name: Nakai, Naomasa
name: Sugai, Hajime
name: Terashima, Yuichi
name: Lee, Minju M.
name: Kawakatu, Nozomu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The radio galaxy NGC 1052 casts absorption features of sulfur-bearing molecules, H$_2$S, SO, SO$_2$, and CS toward the radio continuum emission from the core and jets. Using ALMA, we have measured the equivalent widths of SO absorption features in multiple transitions and determined the temperatures of $344 \pm 43$ K and $26 \pm 4$ K in sub-millimeter and millimeter wavelengths, respectively. Since sub-mm and mm continuum represents the core and jets, the high and low temperatures of the absorbers imply warm environment in the molecular torus and cooler downstream flows. The high temperature in the torus is consistent with the presence of 22-GHz H$_2$O maser emission, vibrationally excited HCN and HCO$^+$ absorption lines, and sulfur-bearing molecules in gas phase released from dust. The origin of the sulfur-bearing gas is ascribed to evaporation of icy dust component through jet-torus interaction. Shock heating is the sole plausible mechanism to maintain such high temperature of gas and dust in the torus. Implication of jet-torus interaction also supports collimation of the sub-relativistic jets by gas pressure of the torus.
description: Accepted to ApJ, 17 pages, 7 figures
Cosmology in a certain vector-tensor theory of gravitation
Creators: name: Dale, Roberto
name: Sáez, Diego
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study relevant cosmological topics in the framework of a certain vector-tensor theory of gravitation (hereafter VT). This theory is first compared with the so-called extended electromagnetism (EE). These theories have a notable resemblance and both explain the existence of a cosmological constant. It is shown that, in EE, a positive dark energy density requires a Lagrangian leading to quantum ghosts, whereas VT is free from these ghosts. On account of this fact, the remainder of the paper is devoted to study cosmology in the framework of VT. Initial conditions, at high redshift, are used to solve the evolution equations of all the VT scalar modes. In particular, a certain scalar mode characteristic of VT -which does not appear in general relativity (GR)- is chosen in such a way that it evolves separately. In other words, the scalar modes of the standard model based on GR do not affect the evolution of the VT characteristic mode; however, this scalar mode influences the evolution of the standard GR ones. Some well known suitable codes (CMBFAST and COSMOMC) have been modified to include our VT initial conditions and evolution equations, which are fully general. One of the resulting codes -based on standard statistical methods- has been used to fit VT predictions and observational evidences about both Ia supernovae and cosmic microwave background anisotropy. Seven free parameters are used in this fit. Six of them are often used in GR cosmology and the seventh one is characteristic of VT. From the statistical analysis it follows that VT seems to be advantageous against GR in order to explain cosmological observational evidences.
description: 29 pages, 5 figures, published in Phys. Rev. D
การกำหนดแนวทางในการออกแบบ และพัฒนาลักษณะทางกายภาพฟาร์มตัวอย่าง สู่การเพิ่มศักยภาพแหล่งท่องเที่ยวเชิงเกษตรอย่างสรรค์
Creators: name: ทัชชญา สังขะกุล
Publisher: name: คณะสถาปัตยกรรมศาสตร์
Year: 2023
Subjects: สถาปัตยกรรมยั่งยืน
สถาปัตยกรรมสีเขียว
การสรรค์สร้างสภาพแวดล้อม
การท่องเที่ยวเชิงเกษตรแนวใหม่

description: วารสาร สิ่งแวดล้อมสรรค์สร้างวินิจฉัย (Built Environment Inquiry BEI), 22, 2, 128-141
A Unified Model for Bipolar Outflows from Young Stars: Kinematic Signatures of Jets, Winds, and Their Magnetic Interplay with the Ambient Toroids
Creators: name: Shang, Hsien
name: Liu, Chun-Fan
name: Krasnopolsky, Ruben
name: Wang, Liang-Yao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Kinematic signatures of the jet, winds, multicavities, and episodic shells arising in the unified model of bipolar outflows developed in Shang et al.\ (2020), in which an outflow forms by radially directed, wide-angle toroidally magnetized winds interacting with magnetized isothermal toroids, are extracted in the form of position--velocity diagrams. Elongated outflow lobes, driven by magnetized winds and their interplay with the environment, are dominated by extended bubble structures with mixing layers beyond the conventional thin-shell models. The axial cylindrically stratified density jet carries a broad profile near the base, across the projected velocity of the wide-angle wind, and narrows down along the axis with the collimated flow. The reverse shock encloses the magnetized free wind, forms an innermost cavity, and deflects the flow pattern. Shear, Kelvin--Helmholtz instabilities, and pseudopulses add fine and distinctive features between the jet--shell components, and the fluctuating jet velocities. The broad webbed velocity features connect the extremely high and the low velocities across the multicavities, mimicking nested outflowing slower-wind components. Rings and ovals in the perpendicular cuts trace multicavities at different heights, and the compressed ambient gap regions enrich the low-velocity features with protruding spikes. Our kinematic signatures capture the observed systematics of the high-, intermediate-, and low-velocity components from Class 0 to II jet--outflow systems in molecular and atomic lines. The nested shells observed in HH 212, HH 30, and DG Tau B are naturally explained. Outflows as bubbles are ubiquitous and form an inevitable integrative outcome of the interaction between wind and ambient media.
description: 66 pages, 26 figures, 3 tables, to appear in the Astrophysical Journal (2023)
A Model for the Generation and Transmission of Variations in Evolution
Creators: name: Rivoire, Olivier
name: Leibler, Stanislas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The inheritance of characteristics induced by the environment has often been opposed to the theory of evolution by natural selection. Yet, while evolution by natural selection requires new heritable traits to be produced and transmitted, it does not prescribe, per se, the mechanisms by which this is operated. The mechanisms of inheritance are not, however, unconstrained, since they are themselves subject to natural selection. We introduce a general, analytically solvable mathematical model to compare the adaptive value of different schemes of inheritance. Our model allows for variations to be inherited, randomly produced, or environmentally induced, and, irrespectively, to be either transmitted or not during reproduction. The adaptation of the different schemes for processing variations is quantified for a range of fluctuating environments, following an approach that links quantitative genetics with stochastic control theory.
Reisebüchlein 1705-1719
Reisejournale Nicolaus I Bernoulli
Creators: name: Bernoulli, Nicolaus
Publisher: name: [s.n.]
Year: 1705

description: von Niklaus I Bernoulli
description: Es gelten die Benutzungsbestimmungen für den Sonderlesesaal.
description: Deutsch
description: Verzeichnung=Description=Inventaire Okt. 2014 Vollständige Rekatalogisierung nach Original, Standortverzeichnis und Katalog neuzeitlicher Handschriften
description: Digitalisierung=Digitization=Numérisation September 2023 TIFF
Radial and vertical flows induced by galactic spiral arms: likely contributors to our "wobbly Galaxy''
Creators: name: Faure, Carole
name: Siebert, Arnaud
name: Famaey, Benoit
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In an equilibrium axisymmetric galactic disc, the mean galactocentric radial and vertical velocities are expected to be zero everywhere. In recent years, various large spectroscopic surveys have however shown that stars of the Milky Way disc exhibit non-zero mean velocities outside of the Galactic plane in both the Galactocentric radial and vertical velocity components. While radial velocity structures are commonly assumed to be associated with non-axisymmetric components of the potential such as spiral arms or bars, non-zero vertical velocity structures are usually attributed to excitations by external sources such as a passing satellite galaxy or a small dark matter substructure crossing the Galactic disc. Here, we use a three-dimensional test-particle simulation to show that the global stellar response to a spiral perturbation induces both a radial velocity flow and non-zero vertical motions. The resulting structure of the mean velocity field is qualitatively similar to what is observed across the Milky Way disc. We show that such a pattern also naturally emerges from an analytic toy model based on linearized Euler equations. We conclude that an external perturbation of the disc might not be a requirement to explain all of the observed structures in the vertical velocity of stars across the Galactic disc. Non-axisymmetric internal perturbations can also be the source of the observed mean velocity patterns.
description: 12 pages, 15 figures, 2 tables. Accepted for publication in MNRAS
Planet Search with the Keck/NIRC2 Vortex Coronagraph in Ms-band for Vega
Creators: name: Ren, Bin B.
name: Wallack, Nicole L.
name: Hurt, Spencer A.
name: Mawet, Dimitri
name: Carter, Aarynn L.
name: Echeverri, Daniel
name: Llop-Sayson, Jorge
name: Meshkat, Tiffany
name: Oppenheimer, Rebecca
name: Aguilar, Jonathan
name: Cady, Eric
name: Choquet, Elodie
name: Ruane, Garreth
name: Vasisht, Gautum
name: Ygouf, Marie
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Gaps in circumstellar disks can signal the existence of planetary perturbers, making such systems preferred targets for direct imaging observations of exoplanets. Being one of the brightest and closest stars to the Sun, the photometric standard star Vega hosts a two-belt debris disk structure. Together with the fact that its planetary system is being viewed nearly face-on, Vega has been one of the prime targets for planet imaging efforts. Using the vector vortex coronagraph on Keck/NIRC2 in Ms-band at 4.67 $μ$m, we report the planet detection limits from 1 au to 22 au for Vega with an on-target time of 1.8 h. We reach a 3 Jupiter mass limit exterior to 12 au, which is nearly an order of magnitude deeper than existing studies. Combining with existing radial velocity studies, we can confidently rule out the existence of companions more than ~8 Jupiter mass from 22 au down to 0.1 au for Vega. Interior and exterior to ~4 au, this combined approach reaches planet detection limits down to ~2-3 Jupiter mass using radial velocity and direct imaging, respectively. By reaching multi-Jupiter mass detection limits, our results are expected to be complemented by the planet imaging of Vega in the upcoming observations using the James Webb Space Telescope to obtain a more holistic understanding of the planetary system configuration around Vega.
description: 6 pages, 3 figures, 1 table, A&A accepted. Contrast curve for 2018 observation available in anc folder. Happy Rabbit Year!
Ising-like phase transition of an n-component Eulerian face-cubic model
Creators: name: Ding, Chengxiang
name: Guo, Wenan
name: Deng, Youjin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: By means of Monte Carlo simulations and a finite-size scaling analysis, we find a critical line of an n-component Eulerian face-cubic model on the square lattice and the simple cubic lattice in the region v>1, where v is the bond weight. The phase transition belongs to the Ising universality class independent of n. The critical properties of the phase transition can also be captured by the percolation of the complement of the Eulerian graph.
description: 6 pages, 6 figures, Phys. Rev. E 88, 052125 (2013)
Singular diffusion and criticality in a confined sandpile
Creators: name: Pires, R. S.
name: Moreira, A. A.
name: Carmona, H. A.
name: Andrade, J. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the behavior of a two-state sandpile model subjected to a confining potential in one and two dimensions. From the microdynamical description of this simple model with its intrinsic exclusion mechanism, it is possible to derive a continuum nonlinear diffusion equation that displays singularities in both the diffusion and drift terms. The stationary-state solutions of this equation, which maximizes the Fermi-Dirac entropy, are in perfect agreement with the spatial profiles of time-averaged occupancy obtained from model numerical simulations in one as well as in two dimensions. Surprisingly, our results also show that, regardless of dimensionality, the presence of a confining potential can lead to the emergence of typical attributes of critical behavior in the two-state sandpile model, namely, a power-law tail in the distribution of avalanche sizes.
description: 5 pages, 5 figures
Stellar oscillations induced by the passage of a fast stellar object
Creators: name: Bertulani, C. A.
name: Naizer, M.
name: Newton, W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate induced oscillations by the gravitational field of a fast stellar object, such as a neutron star or a black-hole in a near miss collision with another star. Non-adiabatic collision conditions may lead to large amplitude oscillations in the star. We show that for a solar-type star a resonant condition can be achieved by a fast moving stellar object with velocity in the range of 100 km/s to 1000 km/s, passing at a distance of a few multiples of the star radius. Although such collisions are rare, they are more frequent than head-on collisions, and their effects could be observed through a visible change of the star luminosity occurring within a few hours.
description: 5 pages, 5 figures