cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Time-resolved multicolour photometry of bright B-type variable stars in Scorpius
Creators: name: Handler, G.
name: Schwarzenberg-Czerny, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The first two of a total of six nano-satellites that will constitute the BRITE-Constellation space photometry mission have recently been launched successfully. In preparation for this project, we carried out time-resolved colour photometry in a field that is an excellent candidate for BRITE measurements from space. We acquired 117 h of Stromgren uvy data during 19 nights. Our targets comprised the Beta Cephei stars Kappa and Lambda Sco, the eclipsing binary Mu 1 Sco, and the variable super/hypergiant Zeta 1 Sco. For Kappa Sco, a photometric mode identification in combination with results from the spectroscopic literature suggests a dominant (l, m) = (1, -1) Beta Cephei-type pulsation mode of the primary star. The longer period of the star may be a rotational variation or a g-mode pulsation. For Lambda Sco, we recover the known dominant Beta Cephei pulsation, a longer-period variation, and observed part of an eclipse. Lack of ultraviolet data precludes mode identification for this star. We noticed that the spectroscopic orbital ephemeris of the closer pair in this triple system is inconsistent with eclipse timings and propose a refined value for the orbital period of the closer pair of 5.95189 +/- 0.00003 d. We also argue that the components of the Lambda Sco system are some 30% more massive than previously thought. The binary light curve solution of Mu 1 Sco requires inclusion of the irradiation effect to explain the u light curve, and the system could show additional low amplitude variations on top of the orbital light changes. Zeta 1 Sco shows long-term variability on a time scale of at least two weeks that we prefer to interpret in terms of a variable wind or strange mode pulsations.
description: 7 pages, 7 figures, 3 Tables, accepted by A&A
Evidence for two distinct populations of kilonova-associated Gamma Ray Bursts
Creators: name: Dimple
name: Misra, K.
name: Arun, K. G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Identification of Gamma Ray Burst (GRB) progenitors based on the duration of their prompt emission ($T_{90}$) has faced several roadblocks recently. Long-duration GRBs (with $T_{90} > 2s$) have traditionally been thought to be originating from the collapse of massive stars, and the short-duration ones (with $T_{90} < 2s$) from compact binary mergers. However, recent observations of a long GRB associated with a kilonova (KN) and a short GRB with supernova (SN) association demand a more detailed classification of the GRB population. In this {\it Letter}, we focus on GRBs associated with KNe, believed to be originating from mergers of binaries involving neutron stars (NS). We make use of the GRB prompt emission light curves of {\it Swift}-BAT 2022 GRB catalog and employ machine learning algorithms to study the classification of GRB progenitors. Our analysis reveals that there are five distinct clusters of GRBs, of which the KN-associated GRBs are located in two separate clusters indicating they may have been produced by different progenitors. We argue that these clusters may be due to subclasses of binary neutron star (BNS) and/or neutron star--black hole (NS-BH) mergers. We also discuss the implications of these findings for future gravitational-wave (GW) observations and how those observations may help in understanding these clusters better.
description: Accepted for publication in ApJL
Diopsis lativola Rondani 1875
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Diopsidae
Diopsis
Diopsis lativola

description: Diopsis lativola Rondani, 1875
ORIGINAL DESCRIPTION: 1875c: 445.
TYPE LOCALITY: “ Insula Bonae Fortunae (Borneo), Provincia Sarawak [Bona Fortuna Island, Sarawak Province, Borneo]” (Rondani 1875c: 421).
TYPE MATERIAL: 1 ♀, holotype (abdomen glued to thorax) (MSNG): Sarawak / Typus / lativola Rond. / Diopsis lativola n° 41.
CURRENT STATUS: junior synonym of Cyrtodiopsis dalmanni (Wiedemann,1830) (Steyskal 1977c: 32); junior synonym of Teleopsis dalmanni (Wiedemann, 1830), new combination.
REMARKS: Rondani (1875c: 445) described Diopsis lativola, without specifying either the number or the sex of the specimens, but giving a single measurement of length, from material collected by G. Doria and O. Beccari. Guiglia (1957: 194) and Raineri & Rey (1996: 36) reported the holotype (♀) in the MSNG. Meier & Baker (2002: 333) synonymized Cyrtodiopsis with Teleopsis but did not transfer Diopsis lativola, which Steyskal (1977c: 32) had treated as a junior synonym of Cyrtodiopsis dalmanni (Wiedemann, 1830); we transfer it here and keep the synonymy, new combination.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 103, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
The CHESS survey of the L1157-B1 bow-shock: high and low excitation water vapor
Creators: name: Busquet, G.
name: Lefloch, B.
name: Benedettini, M.
name: Ceccarelli, C.
name: Codella, C.
name: Cabrit, S.
name: Nisini, B.
name: Viti, S.
name: Gómez-Ruiz, A. I.
name: Gusdorf, A.
name: di Giorgio, A. M.
name: Wiesenfeld, L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Molecular outflows powered by young protostars strongly affect the kinematics and chemistry of the natal molecular cloud through strong shocks resulting in substantial modifications of the abundance of several species. As part of the "Chemical Herschel Surveys of Star forming regions" guaranteed time key program, we aim at investigating the physical and chemical conditions of H20 in the brightest shock region B1 of the L1157 molecular outflow. We observed several ortho- and para-H2O transitions using HIFI and PACS instruments on board Herschel, providing a detailed picture of the kinematics and spatial distribution of the gas. We performed a LVG analysis to derive the physical conditions of H2O shocked material, and ultimately obtain its abundance. We detected 13 H2O lines probing a wide range of excitation conditions. PACS maps reveal that H2O traces weak and extended emission associated with the outflow identified also with HIFI in the o-H2O line at 556.9 GHz, and a compact (~10") bright, higher-excitation region. The LVG analysis of H2O lines in the bow-shock show the presence of two gas components with different excitation conditions: a warm (Tkin~200-300 K) and dense (n(H2)~(1-3)x10^6 cm-3) component with an assumed extent of 10" and a compact (~2"-5") and hot, tenuous (Tkin~900-1400 K, n(H2)~10^3-10^4 cm-3) gas component, which is needed to account for the line fluxes of high Eu transitions. The fractional abundance of the warm and hot H2O gas components is estimated to be (0.7-2)x10^{-6} and (1-3)x10^{-4}, respectively. Finally, we identified an additional component in absorption in the HIFI spectra of H2O lines connecting with the ground state level, probably arising from the photodesorption of icy mantles of a water-enriched layer at the edges of the cloud.
description: Accepted for publication in A&A. 12 pages, 9 figures, 4 tables
Spectral Energy Distributions for 258 Local Volume Galaxies
Creators: name: Dale, Daniel A.
name: Boquien, Mederic
name: Turner, Jordan A.
name: Calzetti, Daniela
name: Kennicutt, Robert C.
name: Lee, Janice C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present model spectral energy distribution (SED) fits to ultraviolet/optical/infrared observations for the 258 nearby galaxies in the Local Volume Legacy survey, a sample dominated by lower-luminosity dwarf irregular systems. The data for each galaxy include up to 26 spatially-integrated broadband and narrowband fluxes from the Galaxy Evolution Explorer, Spitzer Space Telescope, and Infrared Astronomical Satellite space-based platforms and from the Sloan Digital Sky Survey, Two Micron All Sky Survey, and other ground-based efforts. The CIGALE SED fitting package is employed using a delayed star formation history with an optional late burst or quenching episode to constrain 11 different free parameters that characterize the properties of each galaxy's stellar and dust emission, with the overriding constraint that the ultraviolet/optical emission absorbed by interstellar dust grains is emitted in equal energy portions at infrared wavelengths. The main results are: i) 94% of the SED fits yield reduced chi^2 values less than 3; ii) the modeled stellar masses agree with those derived from 3.6um-based measures with a scatter of 0.07 dex; iii) for a typical galaxy in the sample the SED-derived star formation rate averaged over the past 100 Myr is about 88% of the value derived from standard hybrid indicators on similar timescales; and iv) there is a statistically significant inverse relation between the stellar mass fraction appearing in the late burst and the total stellar mass. These results build upon prior SED modeling efforts in the local volume and lay the groundwork for future studies of more distant low-metallicity galaxies with JWST.
description: Accepted for publication in AJ
Teleopsis breviscopium Rondani 1875
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Diopsidae
Teleopsis
Teleopsis breviscopium

description: Teleopsis breviscopium Rondani, 1875
ORIGINAL DESCRIPTION: 1875c: 443.
TYPE LOCALITY: “ Insula Bonae Fortunae (Borneo), Provincia Sarawak [Bona Fortuna Island, Sarawak Province, Borneo]” (Rondani 1875c: 421).
TYPE MATERIAL: 1 ♀, lectotype (MSNG): Sarawak / Typus / Teleopsis breviscopium Rond. / Teleopsis breviscopium n° 39 / Teleopsis breviscopium / Teleopsis breviscopium Rondani 1875, distinct species identification H.R. Feijen, 2004.
PARALECTOTYPE NOT EXAMINED: 1 ♀ (MZUF: Box 72): Teleopsis breviscopium n. / Borneo, Sarawak 1865–66, Coll. G. Doria / [no identification number].
CURRENT STATUS: junior synonym of Teleopsis discrepans (Walker,1856) (Steyskal 1977c: 34); valid species (Feijen 1998: 51).
REMARKS: Rondani (1875c: 443) described Teleopsis breviscopium, without specifying either the number or the sex of the specimens, but giving a single measurement of length, despite there being two specimens in the type series found in this study, from material collected by G. Doria and O. Beccari. Guiglia (1957: 197) and Feijen (1998: 51) reported a “ holotype ” in the MSNG without knowing of an additional female in the MZUF, which brings the original syntype series to two specimens. In his original description, Rondani did not explicitly refer to a single specimen therefore Guiglia’s “ holotype ” specimen must be considered as the lectotype (I.C.Z.N. 1999: Article 74.6). The additional female in the MZUF not examined by Guiglia is a paralectotype.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 103, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
An evolutionary model for V404 Cyg system
Creators: name: Koninckx, L. Bartolomeo
name: De Vito, M. A.
name: Benvenuto, O. G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences
subject: J.2, G.1.10

description: V404 Cyg is a Low Mass X-Ray Binary (LMXB) system that has undergone outbursts in 1938, 1989, and 2015. During these events, it has been possible to determine relevant data of the system; such as the masses of the compact object (a black hole, BH) and its companion, the orbital period, the companion spectral type, and luminosity class, among others. Remarkably, the companion star has a metallicity appreciably higher than solar. All these data allow us to construct theoretical models to account for its structure, looking for its initial configuration and predicting its final fate. Assuming that the BH is already formed when the primary star reaches the Zero Age Main Sequence, we used our binary evolution code for such a purpose. We obtained that the present characteristics of the system are nicely accounted for by a model with initial masses of 9 solar masses for the BH, 1.5 solar masses for the companion star, an initial orbital period of 1.5 d and considering that at most 30% of the mass transferred by the donor is accreted by the BH. The metallicity of the donor for our best fit was Z = 0.028 (twice solar metallicity). We also studied the evolution of the BH spin parameter assuming that initially, it is not rotating. Remarkably, the spin of the BHs in our models is far from reaching the available observational determination. This may indicate that the BH in V404 Cyg is initially spinning, a result that may be relevant for understanding the formation BHs in the context of LMXB systems.
description: 10 pages, 12 figures
Der 2te dumme Bauernbrief, aber nicht über Parlament und Republik noch über Hecker, sondern über den Propheten Jesaja: Cap. 5, V. 8 und V. 11. Dann Cap. 9, V. 20; [1848]
Creators: name: Zog, Conrad
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Kopftitel
H-infinity Optimal Approximation for Causal Spline Interpolation
Creators: name: Nagahara, Masaaki
name: Yamamoto, Yutaka
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In this paper, we give a causal solution to the problem of spline interpolation using H-infinity optimal approximation. Generally speaking, spline interpolation requires filtering the whole sampled data, the past and the future, to reconstruct the inter-sample values. This leads to non-causality of the filter, and this becomes a critical issue for real-time applications. Our objective here is to derive a causal system which approximates spline interpolation by H-infinity optimization for the filter. The advantage of H-infinity optimization is that it can address uncertainty in the input signals to be interpolated in design, and hence the optimized system has robustness property against signal uncertainty. We give a closed-form solution to the H-infinity optimization in the case of the cubic splines. For higher-order splines, the optimal filter can be effectively solved by a numerical computation. We also show that the optimal FIR (Finite Impulse Response) filter can be designed by an LMI (Linear Matrix Inequality), which can also be effectively solved numerically. A design example is presented to illustrate the result.
Distribution of Traction Forces and Intracellular Markers Associated with Shape Changes During Amoeboid Cell Migration
Creators: name: Lasheras, Juan C.
name: Alonso-Latorre, BaLdomeRo
name: Meili, Ruedi
name: Bastounis, Effie
name: del Alamo, Juan C.
name: Firtel, Richard A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: During migration, amoeboid cells perform a cycle of quasi-periodic repetitive events (motility cycle). the cell length and the strain energy exchanged with the substrate oscillate in time with an average frequency, f, on top of which are imposed smaller random fluctuations. the fact that a considerable portion of the changes in cell shape are due to periodic repetitive events enables the use of conditional statistics methods to analyze the network of biochemical processes involved in cell motility. taking advan- tage of this cyclic nature, we apply Principal Component analysis (PCa) and phase- average statistics to analyze the dominant modes of shape change and their association to the activity and localization of molecular motors. We analyze time-lapse measure- ments of cell shape, traction forces and fluorescence from green fluorescent protein (GfP) reporters for f-actin in Dictyostelium cells undergoing guided chemotactic migration. using wild-type cells (wt) as reference, we investigated the contractile and actin crosslinking functions of myosin II by studying myosin II heavy chain null mutant cells (mhcA-) and myosin II essential light chain null cells (mlcE-).
description: Conference Paper for the Sixth Interdisciplinary Transport Phenomena Conference: Fluid, Thermal, Biological, Materials and Space Sciences. Volterra. Italy. October 4-9, (2009)
Optical characterization of electron-phonon interactions at the saddle point in graphene
Creators: name: Roberts, Adam T.
name: Binder, Rolf
name: Kwong, Nai H.
name: Golla, Dheeraj
name: Cormode, Daniel
name: LeRoy, Brian J.
name: Everitt, Henry O.
name: Sandhu, Arvinder
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The role of electron-phonon interactions is experimentally and theoretically investigated near the saddle point absorption peak of graphene. The differential optical transmission spectra of multiple, non-interacting layers of graphene reveals the dominant role played by electron-acoustic phonon coupling in bandstructure renormalization. Using a Born approximation for electron-phonon coupling and experimental estimates of the dynamic phonon lattice temperature, we deduce the effective acoustic deformation potential to be $D^{\rm ac}_{\rm eff} \simeq 5$eV. This value is in accord with recent theoretical predictions but differs substantially from those obtained using electrical transport measurements.
description: 5 pages, 3 figures
Simultaneous Dual-Species Matter-Wave Accelerometer
Creators: name: Bonnin, A.
name: Zahzam, N.
name: Bidel, Y.
name: Bresson, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report the realization of a matter-wave interferometer based on Raman transitions which simultaneously interrogates two different atomic species ($^{87}$Rb and $^{85}$Rb). The simultaneous aspect of our experiment presents encouraging preliminary results for future dual-species atom interferometry projects and seems very promising by taking advantage of a differential acceleration measurement. Indeed the resolution of our differential accelerometer remains lower than $3.9\times 10^{-8}g$ even with vibration levels up to $1\times10^{-3}g$ thanks to common-mode vibration noise rejection . An atom based test of the Weak Equivalence Principle has also been carried out leading to a differential free fall measurement between both isotopes of $Δg/g = (1.2 \pm 3.2)\times10^{-7}$.
description: 5 pages, 1 figure
Optimal search in interacting populations:Gaussian jumps vs Levy flights
Creators: name: Martinez-Garcia, Ricardo
name: Calabrese, Justin M.
name: Lopez, Cristobal
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We investigated the relationships between search efficiency, movement strategy, and non-local communication in the biological context of animal foraging. We considered situations where the members of a population of foragers perform either Gaussian jumps or Levy flights, and show that the search time is minimized when communication among individuals occurs at intermediate ranges, independently of the type of movement. Additionally, while Brownian strategies are more strongly influenced by the communication mechanism, Levy flights still result in shorter overall search durations.
description: 9 pages, 6 figures
The Li + CaF $\to$ Ca + LiF chemical reaction under cold conditions
Creators: name: Silva, Humberto da
name: Yao, Qian
name: Morita, Masato
name: Kendrick, Brian K.
name: Guo, Hua
name: Balakrishnan, Naduvalath
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The calcium monofluoride (CaF) molecule has emerged as a promising candidate for precision measurements, quantum simulation, and ultracold chemistry experiments. Inelastic and reactive collisions of laser cooled CaF molecules in optical tweezers have recently been reported and collisions of cold Li atoms with CaF are of current experimental interest. In this paper, we report ab initio electronic structure and full-dimensional quantum dynamical calculations of the Li + CaF $\to$ LiF + Ca chemical reaction. The electronic structure calculations are performed using the internally contracted multi-reference configuration-interaction method with Davidson correction (MRCI+Q). An analytic fit of the interaction energies is obtained using a many-body expansion method. A coupled-channel quantum reactive scattering approach implemented in hyperspherical coordinates is adopted for the scattering calculations under cold conditions. Results show that the Li + CaF reaction populates several low-lying vibrational levels and many rotational levels of the product LiF molecule and that the reaction is inefficient in the 1-100 mK regime allowing sympathetic cooling of CaF by collisions with cold Li atoms.
An Efficient Multiplication Algorithm Using Nikhilam Method
Creators: name: Dwivedi, Shri Prakash
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: Multiplication is one of the most important operation in computer arithmetic. Many integer operations such as squaring, division and computing reciprocal require same order of time as multiplication whereas some other operations such as computing GCD and residue operation require at most a factor of $\log n$ time more than multiplication. We propose an integer multiplication algorithm using Nikhilam method of Vedic mathematics which can be used to multiply two binary numbers efficiently.
description: Extended version to appear in ITC 2013
New visual companions of solar-type stars within 25 pc
Creators: name: Chini, R.
name: Fuhrmann, K.
name: Domínguez, A. Barr
name: Nuñez, F. Pozo
name: Westhues, C.
name: Hodapp, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of faint common-proper-motion companions to the nearby southern solar-type stars HD43162, HD67199, HD114837, HD114853, HD129502, HD165185, HD197214, and HD212330 from near-infrared imaging and astrometry. We also confirm the previously identified tertiary components around HD165401 and HD188088. Since the majority of these stars were already known as binaries, they ascend now to higher-level systems. A particularly interesting case is the G6.5V BYDra-type variable HD43162, which harbors two common-proper-motion companions at distances of 410 AU and 2740 AU. Our limited study shows that the inventory of common-proper-motion companions around nearby bright stars is still not completely known.
description: 8 pages, 7 figures, accepted by MNRAS
Ephydra ciligena Rondani 1868
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ephydridae
Ephydra
Ephydra ciligena

description: Ephydra ciligena Rondani, 1868
ORIGINAL DESCRIPTION: 1868b: 32.99
TYPE LOCALITY: “ Buenos Aires [Buenos Aires (Argentina)]”.
TYPE MATERIAL: 1 ♀, lectotype (in poor condition, covered with mold) (MZUF: Box 72): Ephydra ciligena R., Am. Mer. [= South America] / holotype, Ephydra ciligena Rondani, P.J. Clausen, 1984 / correct genus now Dimecoenia, P.J. Clausen, 1984 / lectotype [not designated] ♀, Ephydra ciligena Rondani, by P.J. Clausen / [no identification number].
CURRENT STATUS: valid species, as Parydra ciligena (Wirth 1968: 22); valid species, as Dimecoenia ciligena (Mathis & Zatwarnicki 1995: 239).
REMARKS: Rondani (1868b: 32) described Ephydra ciligena, without specifying the number, the sex or the length of the specimens, from material received from P. Strobel. Rondani (1868b) indicated the type locality as Buenos Aires (Argentina) where Strobel taught from 1865–1867, but the specimen itself is labeled “ Am. Mer. ” (= “ America Meridionali ”) [South America]. Philip J. Clausen examined the MZUF type material in 1984, adding the label “ lectotype ” under the single female, without publishing any lectotype designation. We also found just one syntype in this study. In order to promote nomenclature stability, we give credit to P.J. Clausen and here designate as a lectotype for Ephydra ciligena Rondani, 1868 the female labeled as such by him.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 110, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Revisiting SWJ2000.6+3210 : A persistent Be X-ray pulsar ?
Creators: name: Pradhan, Pragati
name: Maitra, Chandreyee
name: Paul, Biswajit
name: Paul, B. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a detailed timing and spectral analysis of the Be X-ray binary SWJ2000.6+3210 discovered by the BAT Galactic plane survey. Two Suzaku observations of the source made at six months interval, reveal pulsations at ~ 890s for both observations with a much weaker pulse fraction in the second one. Pulsations are clearly seen in the energy band of 0.3-10 keV of XIS for both observations and at high energies up to 40 keV for the second observation. The broad band X-ray spectrum is consistent with a powerlaw and high energy cutoff model along with a hot blackbody component. No change in spectral parameters is detected between the observations. We have also analyzed several short observations of the source with Swift/XRT and detected only a few percent variation in flux around a mean value of 3:5 *10^{-11} erg cm^{-2} s^{-1}. The results indicates that SWJ2000.6+3210 is a member of persistent Be X-ray binaries which have the same broad characteristics as this source.
description: Accepted for publication in MNRAS, 14 pages, 6 figures
Myantha fusconotata Rondani 1868
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Fanniidae
Myantha
Myantha fusconotata

description: Myantha fusconotata Rondani, 1868
ORIGINAL DESCRIPTION: 1868b: 27.
TYPE LOCALITY: “ Medonza, Sud (Estacada) [Medonza, Sud (Estacada) (Argentina)]”.
TYPE MATERIAL: 1 ♀, syntype (MZUF: Box 72): Myiantha [sic!] fusconotata Rnd., Am. Mer. [= South America] / [no identification number].
CURRENT STATUS: valid species, as Fannia fusconotata (Pont 1972: 4, De Carvalho et al. 2003: 12).
REMARKS: Rondani (1868b: 27) described Myantha fusconotata from just the female sex, without specifying either the number or the length of the specimens, from material received from P. Strobel. We found one syntype in this study.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on pages 115-116, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Construction of KP solitons from wave patterns
Creators: name: Chakravarty, Sarbarish
name: Kodama, Yuji
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We often observe that waves on the surface of shallow water form complex web-like patterns. They are examples of nonlinear waves, and these patterns are generated by nonlinear interactions among several obliquely propagating waves. In this note, we discuss how to construct an exact soliton solution of the KP equation from such web-pattern of shallow water wave. This can be regarded as an "inverse problem" in the sense that by measuring certain metric data of the solitary waves in the given pattern, it is possible to construct an exact KP soliton solution which can describe the non-stationary dynamics of the pattern.
description: 17 pages, 14 figures (including 6 real wave photos)
Exploring magnetic field properties at the boundary of solar pores: A comparative study based on SDO-HMI observations
Creators: name: Rozo, J. I. Campos
name: Domínguez, S. Vargas
name: Utz, D.
name: Veronig, A. M.
name: Hanslmeier, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Sun's magnetic fields play an important role in various solar phenomena. Solar pores are regions of intensified magnetic field strength compared to the surrounding photospheric environment, and their study can help us better understand the properties and behaviour of magnetic fields in the Sun. Up to now, there exists only a single study on magnetic field properties at the boundary region of a pore. Therefore, the main goal of this work is to increase the statistics of magnetic properties determining the pore boundary region. We analyse six solar pores using data from the Helioseismic and Magnetic Imager instrument on board the Solar Dynamics Observatory. We apply image processing techniques to extract the relevant features of the solar pores and determine the boundary conditions of the magnetic fields. We find the maximal vertical magnetic field values on the boundaries of the studied solar pores to range from 1400~G to 1600~G, with a standard deviation between 7.8\% and 14.8\%. These values are lower than those reported in the mentioned preceding study. However, this can be explained by differences in spatial resolution as well as the type of data we used. The vertical magnetic field is an important factor in determining the boundary of solar pores, and it plays a more relevant role than the intensity gradient. The obtained information will be useful for future studies on the formation and evolution of magnetic structures of the Sun. Additionally, this study highlights the importance of high spatial resolution data for the purpose of accurately characterising the magnetic properties of solar pores.
description: 9 pages, 7 figures. Accepted for publication in Astronomy and Astrophysics (A&A)
Caught in the act: Cluster `k+a' galaxies as a link between spirals and S0s
Creators: name: Del Pino, Bruno Rodriguez
name: Bamford, Steven P.
name: Aragon-Salamanca, Alfonso
name: Milvang-Jensen, Bo
name: Merrifield, Michael R.
name: Balcells, Marc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use integral field spectroscopy of 13 disk galaxies in the cluster AC114 at z ~ 0.31 in an attempt to disentangle the physical processes responsible for the transformation of spiral galaxies in clusters. Our sample is selected to display a dominant young stellar population, as indicated by strong Hdelta absorption lines in their integrated spectra. Most of our galaxies lack the [OII] emission line, and hence ongoing star formation. They therefore possess `k+a' spectra, indicative of a recent truncation of star formation, possibly preceded by a starburst. Disky `k+a' galaxies are a promising candidate for the intermediate stage of the transformation from star-forming spiral galaxies to passive S0s. Our observations allow us to study the spatial distributions and the kinematics of the different stellar populations within the galaxies. We used three different indicators to evaluate the presence of a young population: the equivalent width of Hdelta, the luminosity-weighted fraction of A stars, and the fraction of the galaxy light attributable to simple stellar populations with ages between 0.5 and 1.5 Gyr. We find a mixture of behaviours, but are able to show that in most of galaxies the last episode of star-formation occured in an extended disk, similar to preceeding generations of stars, though somewhat more centrally concentrated. We thus exclude nuclear starbursts and violent gravitational interactions as causes of the star formation truncation. Gentler mechanisms, such as ram-pressure stripping or weak galaxy-galaxy interactions, appear to be responsible for ending star-formation in these intermediate-redshift cluster disk galaxies.
description: "Accepted for publication in MNRAS; 37 pages, 29 figures, 2 tables."
"Lucky Lavaca" volume 1 no. 32, 17 October 1945
Creators: name: Lenew, W.J.
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: History
valueUri: http://id.worldcat.org/fast/958235
subject: Prisoners of war
valueUri: http://id.worldcat.org/fast/1077227
subject: Prisoners of war--Transportation
valueUri: http://id.worldcat.org/fast/1077253
subject: Prisoners
valueUri: http://id.worldcat.org/fast/1077103
subject: Ships
valueUri: http://id.worldcat.org/fast/1116439
subject: Lavaca (Attack transport)
subject: Warships
valueUri: http://id.worldcat.org/fast/1170862
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: Prisoner-of-war camps
valueUri: http://id.worldcat.org/fast/1746580
subject: Personal narratives
valueUri: http://id.worldcat.org/fast/1423843

description: An issue of newsletter of USS Lavaca which was an American ship returning internees to North America via San Francisco in 1945. Newsletter edited by W.J. Lenew, Jr.
Energt Efficient MAC Protocols for Wireless Sensor Network: A Survey
Creators: name: Chukwuka, Eleazar
name: Arshad, Kamran
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Wireless Sensor Network (WSN) is an attractive choice for a variety of applications as no wired infrastructure is needed. Other wireless networks are not as energy constrained as WSNs, because they may be plugged into the mains supply or equipped with batteries that are rechargeable and replaceable. Among others, one of the main sources of energy depletion in WSN is communications controlled by the Medium Access Control (MAC) protocols. An extensive survey of energy efficient MAC protocols is presented in this article. We categorise WSN MAC protocols in the following categories: controlled access (CA), random access (RA), slotted protocols (SP) and hybrid protocols (HP). We further discuss how energy efficient MAC protocols have developed from fixed sleep/wake cycles through adaptive to dynamic cycles, thus becoming more responsive to traffic load variations. Finally we present open research questions on MAC layer design for WSNs in terms of energy efficiency
description: 16 pages
The chiral limit of a fermion-scalar $(1/2)^+$ system in covariant gauges
Creators: name: Noronha, A.
name: de Paula, W.
name: Nogueira, J. H. de Alvarenga
name: Frederico, T.
name: Pace, E.
name: Salmè, G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The homogeneous Bethe-Salpeter equation (BSE) of a (1/2)$^+$ bound system, that has both fermionic and bosonic degrees of freedom, that we call a {\em mock nucleon}, is studied in Minkowski space, in order to analyse the chiral limit in covariant gauges. After adopting an interaction kernel built with a one-particle exchange, the $χ$-BSE is numerically solved by means of the Nakanishi integral representation and light-front projection. Noteworthy, the chiral limit induces a scale-invariance of the model and consequently generates a wealth of striking features: i) it reduces the number of non trivial Nakanishi weight functions to only one; ii) the form of the surviving weight function has a factorized dependence on the two relevant variables, compact and non-compact one; iii) the coupling constant becomes an explicit function of the real exponent governing the power-law fall-off of the non trivial Nakanishi weight function. The thorough investigation at large transverse-momentum of light-front Bethe-Salpeter amplitudes, obtained with massive constituents, provides a confirmation of the expected universal power-law fall-off, with exponents predicted by our non-perturbative framework. Finally, one can shed light on the exponents that govern the approach to the upper extremum of the longitudinal-momentum fraction distribution function of the {\em mock nucleon}, when the coupling constant varies.
Mathematical and Statistical Modelling of Animal Movement
Creators: name: Choules, John D.
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: Good understanding of individual animal movement is needed in the context of epidemiology in order to predict the rate of spread of infectious diseases. It is also required for problems arising in nature conservation such as biological invasions or pest monitoring. A question that often appears in the centre of the movement studies is which movement pattern is 'faster' or more efficient. For instance, it is widely believed that the pattern quantified by a power law distribution of movement steps is faster than Brownian motion. Another common query is do animals actually move using power law distributions. Would other distributions be a better fit for the movement? In pest monitoring a key area is the efficiency of the traps used to calculate the population density of insects. Different shaped traps are rarely compared equally, often the traps will vary in size or surface area. This thesis has three distinct parts and aims to provide insight into three different overlapping areas. The first part looks at different ways to compare probability distributions, and describes a way of comparing distributions without a mean or variance. The second part looks at the movement pattern of Tenebrionid beetles and has a detailed analysis of how these beetles move in a laboratory setting, with an emphasis on checking if any of the beetles tested moved with super-diffusive or ballistic motion. The third part is a comparison of the capture rate of different shaped traps using simulations of particles moving like Tenebrionid beetles.
$SU(1,1)$ coherent states for Dirac-Kepler-Coulomb problem in $D+1$ dimensions with scalar and vector potentials
Creators: name: Ojeda-Guillen, D.
name: Mota, R. D.
name: Granados, V. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We decouple the Dirac's radial equations in $D+1$ dimensions with Coulomb-type scalar and vector potentials through appropriate transformations. We study each of these uncoupled second-order equations in an algebraic way by using an $su(1,1)$ algebra realization. Based on the theory of irreducible representations, we find the energy spectrum and the radial eigenfunctions. We construct the Perelomov coherent states for the Sturmian basis, which is the basis for the unitary irreducible representation of the $su(1,1)$ Lie algebra. The physical radial coherent states for our problem are obtained by applying the inverse original transformations to the Sturmian coherent states.
Sendschreiben des weiland gefangenen Friedrich Funck an den weiland gefangenen, jetzo selb-, flotten- und arbeiterfreundlichen Dr. Eisenmann; [um 1848]
Creators: name: Funck, Friedrich
name: Eisenmann, Gottfried
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Kopftitel
Slow Exciton Spin Relaxation in Single Self-Assembled In$_{1-x}$Ga$_x$As/GaAs Quantum Dots
Creators: name: Wei, Hai
name: Guo, Guang-can
name: He, Lixin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate the acoustic phonon-assisted exciton spin relaxation in single self-assembled In$_{1-x}$Ga$_x$As/GaAs quantum dots using an atomic empirical pseudopotential method. We show that the transition from bright to dark exciton states is induced by Coulomb correlation effects. The exciton spin relaxation time obtained from sophisticated configuration interaction calculations is approximately 15--55 $μ$s in pure InAs/GaAs QDs and even longer in alloy dots. These results contradict previous theoretical and experimental results, which suggest very short exciton spin times (a few ns), but agree with more recent experiments that suggest that excitons have long spin relaxation times ($>$ 1 $μ$s).
CAROLINA MARIA DE JESUS NA LITERATURA DO SÉCULO XX
Creators: name: GIOVANNA NUNES
Publisher: name: figshare
Year: 2020
Subjects: subject: 200514 Literature in Spanish and Portuguese
subject: FOS: Languages and literature

description: O objetivo deste artigo é discorrer sobre algumas reflexões da escritora Carolina Maria de Jesus contidas na obra Quarto de Despejo e propor uma ressiginificação da autora dentro do Modernismo Brasileiro. Para tanto, exporemos brevemente o contexto histórico e literário do século XX com a finalidade de contextualizar a obra de Carolina Maria de Jesus historicamente. Para isso, utilizaremos algumas reflexões de Alfredo Bosi sobre o Modernismo Brasileiro, apontamentos históricos de Nikolau Sevcenko sobre o século XX e, também, excertos do livro Quarto de Despejo, a fim de mostrar as observações sociais feitas por Carolina. Com isso, pretendemos sugerir que Carolina Maria de Jesus, apesar de pouco conhecida, é uma escritora bastante expressiva dentro da Literatura Brasileira
Mycophaga boletorum Rondani 1866
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Anthomyiidae
Mycophaga
Mycophaga boletorum

description: Mycophaga boletorum Rondani, 1866
ORIGINAL DESCRIPTION: 1866a: 188 (key), 189 (description).
TYPE LOCALITY: “ agri parmensis [Parmese territory (Italy)]”.
TYPE MATERIAL: 1 ♀, syntype (MZUF: Box 24): Mycomyia Rndn. / boletorum Rnd., ♀, Parma / 1270 / Platycoenosia boletorum Rondani, Holotypus / Hennig det.
CURRENT STATUS: valid species, as Piezura boletorum (Pont 1986a: 43, Gorodkov et al. 1995: 9); junior synonym of Piezura graminicola (Zetterstedt, 1846) (Pont 2002: 107).
REMARKS: Rondani (1866a: 189) described Mycophaga boletorum from just the female sex without specifying either the number or the length of the specimens: “ Foeminam tantum legi [I collected only the female]”. Willi Hennig labeled as “ Holotypus ” the specimen in the MZUF but he did not mention it in his publication about types in Rondani collections (Hennig, 1961). The species is now ascribed to the genus Piezura Rondani, 1866 in the family Fanniidae (Pont 1986a: 43) and no longer to the genus Mycophaga Rondani, 1856, a valid genus in the family Anthomyiidae (Dely-Draskovits 1993: 72).
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 116, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Combined analysis of stellar and planetary absorption lines via global forward-transit simulations
Creators: name: Dethier, William
name: Bourrier, Vincent
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We characterise the planet-occulted line distortions (POLDs) in absorption spectra of transiting planets, that arise from proxies used for the occulted stellar lines and investigate the impact of stellar rotation, centre-to-limb variations, and broadband limb-darkening. We used the EVaporating Exoplanets (EVE) code to generate realistic stellar spectra during the transit of exoplanets, accounting for the 3D geometry of the system's architecture and atmospheric transit, as well as for spectral variations over the stellar disc. The absorption spectra were calculated using approaches drawn from the literature and compared to the expected signal. The POLDs from stellar rotation are dominant for moderate to fast rotating stars, reaching amplitudes comparable to atmospheric signals, but they can be mitigated by shifting the stellar line proxies to the radial velocity of the planet-occulted region. Centre-to-limb variations become dominant for slow rotators and are more easily mitigated at the stellar limb. We re-interpret the ESPRESSO data of two iconic systems and confirm that the sodium signature from HD209458b mainly arises from POLDs. However, we unveil a possible contribution from the planetary atmosphere that warrants further observations. For MASCARA-1b, we did not find evidence for atmospheric sodium absorption and we can fully explain the observed signature by a POLD for super-solar stellar sodium abundance. We studied POLDs dependency on star and planet properties, and on the proxy used for planet-occulted lines. Distinguishing planetary absorption signatures from POLDs is challenging without access to accurate estimates of the local stellar spectrum and system orbital parameters. We propose a way to mitigate POLDs and improve atmospheric characterisation, by using simultaneous forward modelling of both the star and the planet to simulate the global observed signatures.