cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sonnenfleckenzeichnung Nr. 26356.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.02.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Sonnenfleckenzeichnung Nr. 26382.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.04.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Black Hole Horizon Fluffs: Near Horizon Soft Hairs as Microstates of Three Dimensional Black Holes
Creators: name: Afshar, H.
name: Grumiller, D.
name: Sheikh-Jabbari, M. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We provide the first explicit proposal for all microstates of generic black holes in three dimensions (of Banados-Teitelboim-Zanelli-type): black hole microstates, termed "horizon fluffs", are a particular class of near horizon soft hairs which have zero energy as measured by the horizon observer and cannot be distinguished by observers at finite distance from the horizon. These states are arranged in orbits of the two-dimensional conformal algebra associated with the asymptotic black hole geometry. We count these microstates using the Hardy-Ramanujan formula for the number of partitions of a given integer into non-negative integers, recovering the Bekenstein-Hawking entropy. We discuss possible extensions of our black hole microstate construction to astrophysical Kerr-type black holes.
description: 6 pp, v2: reference added; equation defining black hole microstates made more precise, v3: extended discussion and relation to AdS3/CFT2, v5: discussion about the holographic picture and logarithmic correction to the entropy removed and referred to arXiv:1705.06257
Allarme supernova, sirena d’esplosione imminente
Creators: Guido Sbrogiò
Publisher: name: Media Inaf
Year: 2022

Le supergiganti rosse, poco prima di esplodere in supernove, si oscurano fino a cento volte. È un campanello d’allarme che potrebbe segnalare per tempo che un evento cataclismatico sta per avvenire. In questo modo diventerebbe possibile prevedere in anticipo quando una supergigante rossa è sul punto di esplodere e puntare i telescopi per assistere in diretta alla morte della stella
From the 'sticky floor' to the 'glass ceiling'
Creators: name: Lipscombe, Pamela Mary.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Testing the imprint of non-standard cosmologies on void profiles using Monte Carlo random walks
Creators: name: Achitouv, Ixandra
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using a Monte Carlo random walks of a log-normal distribution, we show how to qualitatively study void properties for non-standard cosmologies. We apply this method to an f(R) modified gravity model and recover the N-body simulation results of (Achitouv et al. 2016) for the void profiles and their deviation from GR. This method can potentially be extended to study other properties of the large scale structures such as the abundance of voids or overdense environments. We also introduce a new way to identify voids in the cosmic web, using only a few measurements of the density fluctuations around random positions. This algorithm allows to select voids with specific profiles and radii. As a consequence, we can target classes of voids with higher differences between f(R) and standard gravity void profiles. Finally we apply our void criteria to galaxy mock catalogues and discuss how the flexibility of our void finder can be used to reduce systematics errors when probing the growth rate in the galaxy-void correlation function.
description: 12 pages,10 figures, match the PRD manuscript
Sonnenfleckenzeichnung Nr. 26410.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.05.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Extrapolation-Based Implicit-Explicit Peer Methods with Optimised Stability Regions
Creators: name: Lang, Jens
name: Hundsdorfer, Willem
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L04, 65L06, 65M20

description: In this paper we investigate a new class of implicit-explicit (IMEX) two-step methods of Peer type for systems of ordinary differential equations with both non-stiff and stiff parts included in the source term. An extrapolation approach based on already computed stage values is applied to construct IMEX methods with favourable stability properties. Optimised IMEX-Peer methods of order p = 2, 3, 4, are given as result of a search algorithm carefully designed to balance the size of the stability regions and the extrapolation errors. Numerical experiments and a comparison to other implicit-explicit methods are included.
description: 21 pages, 6 figures
Construction of action for heterotic string field theory including the Ramond sector
Creators: name: Goto, Keiyu
name: Kunitomo, Hiroshi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Extending the formulation for open superstring field theory given in arXiv:1508.00366, we attempt to construct a complete action for heterotic string field theory. The action is non-polynomial in the Ramond string field Psi, and we construct it order by order in Psi. Using a dual formulation in which the role of eta and Q is exchanged, the action is explicitly obtained at the quadratic and quartic order in Psi with the gauge transformations.
description: 44pages; ver2: Modification for one of the author's address; ver3: appendix B is added (50 pages in total); ver4: typos are corrected
Linguaggi: come ci parla l’universo
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2022

Vent’anni tondi per la storica manifestazione dedicata alla diffusione della scienza, edizione che quest’anno è dedicata ai “Linguaggi”. Le ricercatrici e i ricercatori dell’Istituto nazionale di astrofisica saranno presenti con una variegata offerta di contenuti: conferenze, laboratori, tour e realtà virtuali, passando per la nostra nuova Escape room. Sempre se riuscirete a uscirne
Con Aso-S anche la Cina è in volo verso il Sole
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2022

Lanciato il 9 ottobre dal Centro spaziale di Jiuquan, terrà la nostra stella sott‘occhio da un’orbita eliosincrona per almeno quattro anni, così da studiarne il comportamento e monitorarne le manifestazioni più estreme – brillamenti ed espulsioni coronali di massa – proprio durante il picco di massima attività, previsto per il 2024-2025.  «Un perfetto complemento al coronografo Metis di Solar Orbiter», dice a Media Inaf Marco Romoli, dell’Università di Firenze
title: Magnetic-field-induced second harmonic generation in semiconductors and insulators
title: Magnetic field induced second harmonic generation in semiconductors and insulators
titleType: AlternativeTitle
Creators: name: Sänger, Ingo
Publisher: name: Technische Universität Dortmund
Year: 2006
Subjects: subject: SHG
subject: Semiconductor
subject: Insulator
subject: Magnetism
subject: Magnetic
subject: Optic
subject: DMS
subject: GaAs
subject: CdTe
subject: Nonlinear
subject: Spectroscopy
subject: NiO
subject: 530

description: In the first part, it is shown that application of a magnetic field induces optical second harmonic generation (SHG) in GaAs. This phenomenon arises from field-induced symmetry breaking causing new optical nonlinearities. A series of narrow SHG lines is observed in the spectral range from 1.52 to 1.77 eV that is attributed to Landau-level quantization of the band energy spectrum. The rotational anisotropy of the SHG signal distinctly differs from that of the electric-dipole approximation. Model calculations reveal that nonlinear magneto-optical spatial-dispersion that comes together with the electric-dipole term is the dominant mechanism for this nonlinearity. In the second part, basically different mechanisms of optical second harmonic generation (SHG) in semiconductors, induced by an external magnetic field H, are identified experimentally by studying the diluted magnetic semiconductor (Cd,Mn)Te. For paramagnetic (Cd,Mn)Te the SHG response is governed by spin quantization of electronic states, in contrast with diamagnetic CdTe with its dominating orbital quantization. The mechanisms can be identified by the distinct magnetic field dependence of the SHG intensity which scales with the spin splitting in the paramagnetic case as compared to the H2 dependence observed for the diamagnetic case. In the third part, three types of optical magnetic-field induced second harmonic (MFISH) generation are discussed in CuB2O4. Unusually sharp and intense electronic transitions in MFISH and linear absorption spectra provide selective access to the two nonequivalent Cu2+ sublattices. The magnetic phase diagram for both sublattices is determined by MFISH. Magnetic structure is dominated by antiferromagnetic order at the 4b site. Sublattice interactions transfer it to the 8d site where it coexists with a discoupled paramagnetic component.
title: Forschendes Lernen
title: Lernen im "Format" der Forschung
titleType: AlternativeTitle
Creators: name: Wildt, Johannes
Publisher: name: Hochschuldidaktisches Zentrum der Technischen Universität Dortmund
Year: 2009
Subjects: subject: 370

description: Journal Hochschuldidaktik ; 20. Jahrgang 2009 Heft 2
title: Gute Bedingungen für gute Promotionen
title: Projekt: Qualitätssicherung in der Promotionsphase
titleType: AlternativeTitle
Creators: name: Wergen, Jutta
Publisher: name: Hochschuldidaktisches Zentrum der Technischen Universität Dortmund
Year: 2009
Subjects: subject: 370

description: Journal Hochschuldidaktik ; 20. Jahrgang 2009 Heft 1
Parabolic induction and extensions
Creators: name: Hauseux, Julien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 22E50

description: Let $G$ be a $p$-adic reductive group. We determine the extensions between admissible smooth mod $p$ representations of $G$ parabolically induced from supersingular representations of Levi subgroups of $G$, in terms of extensions between representations of Levi subgroups of $G$ and parabolic induction. This proves for the most part a conjecture formulated by the author in a previous article and gives some strong evidence for the remaining part. In order to do so, we use the derived functors of the left and right adjoints of the parabolic induction functor, both related to Emerton's $δ$-functor of derived ordinary parts. We compute the latter on parabolically induced representations of $G$ by pushing to their limits the methods initiated and expanded by the author in previous articles.
description: 55 pages, final version
Sonnenfleckenzeichnung Nr. 26369.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 13.03.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
On the edge of the stable range
Creators: name: Hepworth, Richard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20J06 (primary), 20F28, 57M07, 55R40 (secondary)

description: We prove a general homological stability theorem for certain families of groups equipped with product maps, followed by two theorems of a new kind that give information about the last two homology groups outside the stable range. (These last two unstable groups are the "edge" in our title.) Applying our results to automorphism groups of free groups yields a new proof of homological stability with an improved stable range, a description of the last unstable group up to a single ambiguity, and a lower bound on the rank of the penultimate unstable group. We give similar applications to the general linear groups of the integers and of the field of order 2, this time recovering the known stablility range. The results can also be applied to general linear groups of arbitrary principal ideal domains, symmetric groups, and braid groups. Our methods require us to use field coefficients throughout.
description: 43 pages; v2: corrected some statements and edited introduction
The moral significance of dying with dignity
Creators: name: West, Marie Therese.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Quell’emissione in apparenza più veloce della luce
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2022

Grazie ai dati ottenuti dal telescopio spaziale Hubble, un team di astronomi  guidati dal California Institute of Technology di Pasadena, in California, ha determinato la velocità del getto relativistico emesso dopo l'evento Gw 170817, la prima fusione di due stelle di neutroni mai rilevata contemporaneamente nelle onde gravitazionali e in quelle elettromagnetiche: viaggiava a circa il 99,97 per cento della velocità della luce. Tutti i dettagli su Nature
Jeans Analysis for Dwarf Spheroidal Galaxies in Wave Dark Matter
Creators: name: Chen, Shu-Rong
name: Schive, Hsi-Yu
name: Chiueh, Tzihong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Although still under debate, observations generally suggest that dwarf spheroidal (dSph) galaxies exhibit large constant-density cores in the centers, which can hardly be explained by dissipationless cold dark matter simulations without baryonic feedback. Wave dark matter (${ψ{\rm DM}}$), characterized by a single parameter, the dark matter particle mass $m_ψ$, predicts a central soliton core in every galaxy arising from quantum pressure against gravity. Here we apply Jeans analysis assuming a soliton core profile to the kinematic data of eight classical dSphs so as to constrain $m_ψ$, and obtain $m_ψ=1.18_{-0.24}^{+0.28}\times10^{-22}{\,\rm eV}$ and $m_ψ=1.79_{-0.33}^{+0.35}\times10^{-22}{\,\rm eV}~(2σ)$ using the observational data sets of Walker et al. (2007) and Walker et al. (2009b), respectively. We show that the estimate of $m_ψ$ is sensitive to the dSphs kinematic data sets and is robust to various models of stellar density profile. We also consider multiple stellar subpopulations in dSphs and find consistent results. This mass range of $m_ψ$ is in good agreement with other independent estimates, such as the high-redshift luminosity functions, the reionization history, and the Thomson optical depth to the cosmic microwave background.
description: 12 pages, 11 figures, 2 tables, add appendix B about the joint analysis, submitted to MNRAS
Il raro incontro delle lune di Marte e Giove
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2022

Il satellite Mars Express dell'Agenzia spaziale europea è riuscito a catturare il raro momento in cui Deimos, la piccola luna di Marte, passa davanti a Giove e alle sue quattro lune più grandi. Oltre alla bellezza del fenomeno astronomico in sé, allineamenti celesti come questi consentono una determinazione più precisa delle orbite delle lune marziane
Enhanced entanglement of two different mechanical resonators via coherent feedback
Creators: name: Li, Jie
name: Li, Gang
name: Zippilli, Stefano
name: Vitali, David
name: Zhang, Tiancai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It was shown [New J. Phys. 17, 103037 (2015)] that large and robust entanglement between two different mechanical resonators could be achieved, either dynamically or in the steady state, in an optomechanical system in which the two mechanical resonators are coupled to a single cavity mode driven by a suitably chosen two-tone field. An important limitation of the scheme is that the cavity decay rate must be much smaller than the two mechanical frequencies and their difference. Here we show that the entanglement can be remarkably enhanced, and the validity of the scheme can be largely extended, by adding a coherent feedback loop that effectively reduces the cavity decay rate.
description: 8 pages, 4 figures, to appear in PRA
Sonnenfleckenzeichnung Nr. 26408.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.05.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
L’eclissi di Sole del 25 ottobre in diretta dall’Inaf
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2022

Nella tarda mattinata di martedì 25 ottobre, un’eclissi parziale di Sole sarà visibile dai cieli italiani. Il massimo dell’eclissi, con un oscuramento del disco solare fino a circa il 20 per cento, è previsto intorno alle 12.20. Per l’occasione, EduInaf, il magazine di didattica e divulgazione dell’Istituto nazionale di astrofisica, organizza una diretta con osservazioni dal vivo dell’eclissi al telescopio da diverse sedi Inaf
Simulation of Wrinkle Formation in Free Electromagnetic Tube Compression
Creators: name: Demir, O. K.
name: Psyk, V.
name: Tekkaya, A. E.
Publisher: name: Institut für Umformtechnik - Technische Universität Dortmund
Year: 2010
Subjects: subject: buckling
subject: electromagnetic tube compression
subject: finite element simulation
subject: 620
subject: 670

description: A 3-dimensional (3D) finite element (FE) simulation of free electromagnetic (EM) tube compression was performed with the aim of predicting wrinkle formation. Staggered coupling was applied between the EM and mechanical parts of the problem. The full 360° portion of the problem was modelled since the wrinkle formation does not represent any symmetry in circumferential direction. The initial geometric imperfections of the tube were measured and included in the model to trigger buckling. The deformed geometry with the wrinkles could be predicted accurately.
Two Dimensional F(R) Horava-Lifshitz Gravity
Creators: name: Kluson, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study two-dimensional F(R) Horava-Lifshitz gravity from the Hamiltonian point of view. We determine constraints structure with emphasis on the careful separation of the second class constraints and global first class constraints. We determine number of physical degrees of freedom and also discuss gauge fixing of the global first class constraints.
description: 21 pages
Emitter and absorber assembly for multiple self-dual operation and directional transparency
Creators: name: Kalozoumis, P. A.
name: Morfonios, C. V.
name: Kodaxis, G.
name: Diakonos, F. K.
name: Schmelcher, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A recursive scheme for the design of scatterers acting simultaneously as emitters and absorbers, such as lasers and coherent perfect absorbers in optics, at multiple prescribed frequencies is proposed. The approach is based on the assembly of non-Hermitian emitter and absorber units into self-dual emitter-absorber trimers at different composition levels, exploiting the simple structure of the corresponding transfer matrices. In particular, lifting the restriction to parity-time-symmetric setups enables the realization of emitter and absorber action at distinct frequencies and provides flexibility in the choice of realistic parameters. We further show how the same assembled scatterers can be rearranged to produce unidirectional and bidirectional transparency at the selected frequencies. With the design procedure being generically applicable to wave scattering in single-channel settings, we demonstrate it with concrete examples of photonic multilayer setups.
description: 5 pages, 2 figures
Bentornata Samantha!
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2022

L'astronauta dell’Esa Samantha Cristoforetti è rientrata sulla Terra insieme agli astronauti della Nasa Kjell Lindgren, Bob Hines e Jessica Watkins, ponendo così fine alla sua seconda missione sulla Stazione spaziale internazionale, denominata Minerva
Scoccato dalla Freccia, è il lampo gamma del secolo
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2022

Rilevato per la prima volta il 9 ottobre 2022 da telescopi a raggi X e gamma in orbita, potrebbe rappresentare il “primo vagito” di un buco nero appena nato. Nome in codice Grb 221009A, è una delle esplosioni più potenti mai registrate. «Un flusso così elevato è dato dalla combinazione fra la grande luminosità intrinseca e la vicinanza», spiega a Media Inaf Andrea Tiengo dello Iuss di Pavia
Sonnenfleckenzeichnung Nr. 26375.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.03.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Towards mitigating the effect of sine-Gaussian noise transients on searches for gravitational waves from compact binary coalescences
Creators: name: Bose, Sukanta
name: Dhurandhar, Sanjeev
name: Gupta, Anuradha
name: Lundgren, Andrew
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational wave (GW) signals were recently detected directly by LIGO from the coalescences of two black hole pairs. These detections have strengthened our belief that compact binary coalescences (CBCs) are the most promising GW detection prospects accessible to ground-based interferometric detectors. For detecting CBC signals it is of vital importance to characterize and identify non-Gaussian and non-stationary noise in these detectors. In this work we model two important classes of transient artifacts that contribute to this noise and adversely affect the detector sensitivity to CBC signals. One of them is the sine-Gaussian glitch, characterized by a central frequency $f_0$ and a quality factor $Q$ and the other is the chirping sine-Gaussian glitch, which is characterized by $f_0$, $Q$ as well as a chirp parameter. We study the response a bank of compact binary inspiral templates has to these two families of glitches when they are used to match-filter data containing any of these glitches. Two important characteristics of this response are the distributions of the signal-to-noise ratio and the timelag of individual templates. We show how these distributions differ from those when the detector data has a real CBC signal instead of a glitch. We argue that these distinctions can be utilized to develop useful signal-artifact vetos that add negligibly to the computational cost of a CBC search. Specifically, we show how $f_0$ of a glitch can be used to set adaptive time-windows around it so that any template trigger occurring in that window can be quarantined for further vetting of its supposed astrophysical nature. Second, we recommend focusing efforts on reducing the incidence of glitches with low $f_0$ values because they create CBC triggers with the longest timelags. This work allows us to associate such triggers with the glitches which otherwise would have escaped attention.
description: 18 pages, 13 figures. v2: title changed, minor changes to the text, matches published version (abstract is shortened to comply with the arXiv's 1920 characters limitation)
Virus e meduse per il premio “Piccolo Galileo”
Creators: Federico Di Giacomo
Publisher: name: Media Inaf
Year: 2022

“Il giardino delle meduse” e “Virus Game. Dall’attacco alla difesa: come si protegge il corpo umano” sono i due libri vincitori, rispettivamente per la categoria Junior e Young, della prima edizione del premio letterario Piccolo Galileo, dedicato alla letteratura scientifica per bambine e bambini, ragazze e ragazzi
Searching for Scheherazade : claiming female subjectivity through narratives of the self
Creators: name: Keegel, Tessa Germaine.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Sonnenfleckenzeichnung Nr. 26418.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.05.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Change and Continuity Revisited: The View from Kesteven (Lincolnshire)
Creators: name: Gardiner, Mark F
name: Hamilton-Bing, Annabelle
Publisher: name: Archaeology Data Service
Year: 2025

description: Medieval Settlement Research, 39, 1-25
description: The LiDAR data from villages and other settlements in southern Lincolnshire are analysed and interpreted. The results are compared with previously published work from the north-west of the county. The new study showed that medieval settlement in the south of Kesteven was strongly nucleated with no evidence of farmsteads beyond the villages and hamlets. The only exception were the monastic granges and moated sites which were established in new locations. Most villages show some signs of contraction in the post-medieval period, and often of subsequent reoccupation. Consequently, the modern or even late nineteenth-century form of settlements may be a very poor guide to their medieval plan. Amongst the sites newly recognised are the meeting site of a thing or assembly, and the boundary enclosure of a minster church.
Con Hugo scopriremo i primi lampi gamma
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2022

Andare alla ricerca di lampi di raggi gamma non è facile: sono molto deboli e la maggior parte dei satelliti non può intercettarli. Questi eventi incredibilmente energetici, che osserviamo come lampi estremamente luminosi nelle frequenze dei raggi gamma, potrebbero però essere presto osservati con un telescopio dedicato, chiamato Hugo, al quale stanno lavorando ricercatori da tutto il mondo, compresi quelli dell’Inaf. Maggiori dettagli su Nature Astronomy
Amtliche Mitteilungen der Universität Dortmund Nr. 14/83
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Dortmund
Year: 1983
Subjects: subject: 080

description: Grundordnung der Universität Dortmund vom 25. Juli 1983
description: Amtliche Mitteilungen der Universität Dortmund ; 14, 1983
Sonnenfleckenzeichnung Nr. 26341.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.02.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Efficient polarization of high-angular-momentum systems
Creators: name: Rochester, Simon M.
name: Szymański, Konrad
name: Raizen, Mark
name: Pustelny, Szymon
name: Auzinsh, Marcis
name: Budker, Dmitry
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose methods of optical pumping that are applicable to open, high-angular-momentum transitions in atoms and molecules, for which conventional optical pumping would lead to significant population loss. Instead of applying circularly polarized cw light, as in conventional optical pumping, we propose to use techniques for coherent population transfer (e.g., adiabatic fast passage) to arrange the atoms so as to increase the entropy removed from the system with each spontaneous decay from the upper state. This minimizes the number of spontaneous-emission events required to produce a stretched state, thus reducing the population loss due to decay to other states. To produce a stretched state in a manifold with angular momentum J, conventional optical pumping requires about 2J spontaneous decays per atom, one of our proposed methods reduces this to about log_2(2J), while another of the methods reduces it to about one spontaneous decay, independent of J.
description: 13 pages, 12 figures
Aria pesante come non mai: c’è bario in atmosfera
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2022

Trovato in alta quota attorno ai giganti gassosi ultra caldi Wasp-76 b e Wasp-121 b, con un peso atomico pari a circa 2,5 volte quello del ferro il bario è l’elemento più pesante mai individuato nell’atmosfera di un esopianeta. A firmare la scoperta, compiuta grazie allo strumento Espresso installato sul Vlt dell’Eso, in Cile, un team – guidato dal dottorando portoghese Tomás Azevedo Silva – del quale fanno parte numerosi ricercatori dell’Istituto nazionale di astrofisica
Sonnenfleckenzeichnung Nr. 26393.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.04.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Excavation of medieval green-edge settlement in Barrow, near Bury St Edmunds, and a wider consideration of early medieval agricultural expansion in the Suffolk Claylands
Creators: name: Woolhouse, Tom
name: Mlynarska, Judy
name: Holder, Nick
name: Bishop, Barry John
name: Egberts, Ella
name: Percival, Sarah
name: Sudds, Berni
name: Hayward, Kevin M J
name: Beveridge, Ruth
name: Starley, David
name: Rielly, Kevin
name: Desrosiers, Ryan
name: Turner, Kate
name: Wheeler, Jane
name: Challinor, Dana
Publisher: name: Archaeology Data Service
Year: 2025

description: Medieval Settlement Research, 39, 26-47
description: Development-led excavation in Barrow, near Bury St Edmunds, Suffolk, recorded an area of eleventh- to fourteenth-century occupation along Barrow Hill, now a road but formerly (prior to Inclosure) a wide drove funnelling into Barrow Green 250m to the north. The character of the finds and environmental remains from the site indicate fairly low-status inhabitants engaged primarily in subsistence farming. Although in some respects unremarkable, when viewed in their landscape context and combined with documentary records notably a drawn survey and dragg book of 1597 the excavation results provide significant new evidence for the origins of the green-edge settlement at Barrow Green, and for the chronology and character of the process of early medieval clayland recolonisation in both this Suffolk parish and perhaps elsewhere.
Sonnenfleckenzeichnung Nr. 26421.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.05.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Sonnenfleckenzeichnung Nr. 26361.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.03.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
Amtliche Mitteilungen der Universität Dortmund Nr. 15/85
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Dortmund
Year: 1985
Subjects: subject: 080

description: Vorläufige Diplomprüfungsordnung des Fachbereichs Informatik
description: Amtliche Mitteilungen der Universität Dortmund ; 15, 1985
Sonnenfleckenzeichnung Nr. 26363.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.03.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
title: Solutions of direct and inverse even-order Sturm-Liouville problems using Magnus expansion
Creators: name: Perera, Upeksha
name: Böckmann, Christine
Publisher: name: Universität Potsdam
Year: 2023
Subjects: subject: 510 Mathematik

description: In this paper Lie group method in combination with Magnus expansion is utilized to develop a universal method applicable to solving a Sturm–Liouville problem (SLP) of any order with arbitrary boundary conditions. It is shown that the method has ability to solve direct regular (and some singular) SLPs of even orders (tested for up to eight), with a mix of (including non-separable and finite singular endpoints) boundary conditions, accurately and efficiently. The present technique is successfully applied to overcome the difficulties in finding suitable sets of eigenvalues so that the inverse SLP problem can be effectively solved. The inverse SLP algorithm proposed by Barcilon (1974) is utilized in combination with the Magnus method so that a direct SLP of any (even) order and an inverse SLP of order two can be solved effectively.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1336
Sonnenfleckenzeichnung Nr. 26365.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.03.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Inhomogeneous quasi-adiabatic driving of quantum critical dynamics in weakly disordered spin chains
Creators: name: Rams, Marek M.
name: Mohseni, Masoud
name: del Campo, Adolfo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce an inhomogeneous protocol to drive a weakly disordered quantum spin chain quasi-adiabatically across a quantum phase transition and minimize the residual energy of the final state. The number of spins that simultaneously reach the critical point is controlled by the length scale in which the magnetic field is modulated, introducing an effective size that favors adiabatic dynamics. The dependence of the residual energy on this length scale and the velocity at which the magnetic field sweeps out the chain is shown to be nonmonotonic. We determine the conditions for an optimal suppression of the residual energy of the final state and show that inhomogeneous driving can outperform conventional adiabatic schemes based on homogeneous control fields by several orders of magnitude.
description: 10 pages, 7 figures, published version
Una coppia alle strette
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2022

Gli astronomi hanno scoperto una coppia di stelle da record, con l'orbita più breve mai osservata: appena 51 minuti. Il sistema sembra appartenere a una rara classe di binarie note come variabili cataclismiche, in cui una stella simile al Sole orbita molto vicino a una nana bianca, “donandole” gran parte della sua atmosfera di idrogeno. Tutti i dettagli su Nature
Amtliche Mitteilungen der Technischen Universität Dortmund Nr. 18/2008
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2008
Subjects: subject: 080

description: Verlust eines Dienstsiegels
description: Wahlordnung der Technischen Universität Dortmund
description: Amtliche Mitteilungen der Technischen Universität Dortmund ; 18, 2008
Observation of von Kármán Vortex Street in an Atomic Superfluid Gas
Creators: name: Kwon, Woo Jin
name: Kim, Joon Hyun
name: Seo, Sang Won
name: Shin, Yong-il
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report on the experimental observation of vortex cluster shedding from a moving obstacle in an oblate atomic Bose-Einstein condensate. At low obstacle velocities $v$ above a critical value, vortex clusters consisting of two like-sign vortices are generated to form a regular configuration like a von Kármán street, and as $v$ is increased, the shedding pattern becomes irregular with many different kinds of vortex clusters. In particular, we observe that the Stouhal number associated with the shedding frequency exhibits saturation behavior with increasing $v$. The regular-to-turbulent transition of the vortex cluster shedding reveals remarkable similarities between a superfluid and a classical viscous fluid. Our work opens a new direction for experimental investigations of the superfluid Reynolds number characterizing universal superfluid hydrodynamics.
description: 7 pages, 7 figures
Sonnenfleckenzeichnung Nr. 26349.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.02.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Odore di broccoli? Potrebbe essere vita
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2022

I broccoli, insieme a molte altre piante e microrganismi, emettono gas che li aiutano a espellere le tossine. Secondo un nuovo studio, la presenza di questi gas nelle esoatmosfere potrebbe fornire prove convincenti dell’esistenza di vita su altri pianeti
Sonnenfleckenzeichnung Nr. 26378.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.03.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
In mongolfiera su Venere
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2022

Una versione ridotta del pallone robotico aereo – in breve, aerobot – che un giorno potrebbe “navigare” nei poco ospitali cieli venusiani ha completato con successo ben due voli di prova nel deserto Black Rock, in Nevada, segnando una pietra miliare per il progetto guidato dal Jet Propulsion Laboratory della Nasa e dalla Near Space Corporation
Sonnenfleckenzeichnung Nr. 26350.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.02.1982, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1982

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g) und darüber hinaus einer Spalte für A: mit Hilfe eines korrekt-reduzierenden optischen Filters von blossem Auge sichtbare Flecken
Molecole organiche nei dintorni dei buchi neri
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2022

Grazie allo strumento Miri del telescopio spaziale James Webb, un team di astronomi guidati dall'Università di Oxford è riuscito a studiare per la prima volta una classe di molecole organiche, gli idrocarburi policiclici aromatici (Ipa), nelle vicinanze dei buchi neri supermassicci al centro di tre galassie attive, tra cui Ngc 7319 del Quintetto di Stephan. Lo studio su Astronomy & Astrophysics
Antiferromagnetic Dirac Semimetals in Two Dimensions
Creators: name: Wang, Jing
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The search for symmetry-protected 2D Dirac semimetals analogous to graphene is important both for fundamental and practical interest. The 2D Dirac cones are protected by crystalline symmetries and magnetic ordering may destroy their robustness. Here we propose a general framework to classify stable 2D Dirac semimetals in spin-orbit coupled systems having the combined time-reversal and inversion symmetries, and show the existence of the stable Dirac points in 2D antiferromagnetic semimetals. Compared to 3D Dirac semimetals which fall into two distinct classes, Dirac semimetals in 2D with combined time-reversal and inversion symmetries belongs to single class which is closely related to the nonsymmorphic space group symmetries. We further provide a concrete model in antiferromagnetic semimetals which supports symmetry-protected 2D Dirac points. The symmetry breaking in such systems leads to 2D chiral topological states such as quantum anomalous Hall insulator and chiral topological superconductor phases.
description: 7 pages, 5 figures, 2 tables