cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flares from spiral waves by lensing and time-delay amplification?
Creators: name: Karas, V.
name: Dovciak, M.
name: Eckart, A.
name: Meyer, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Episodically accreting black holes are thought to produce flares when a chunk of particles is accelerated to high velocity near the black hole horizon. This also seems to be the case of Sagittarius A* in the Galactic Center, where the broad-band radiation is produced, likely via the synchrotron self-Compton mechanism. It has been proposed that strong-field gravitational lensing magnifies the flares. The effect of lensing is generally weak and requires a fine-tuned geometrical arrangement, which occurs with only a low probability. However, there are several aspects that make Sagittarius A* a promising target to reveal strong gravity effects. Unlike type II (obscured) active galaxies, chances are that a flare is detected at high inclination, which would be favourable for lensing. Time delays can then significantly influence the observed flare duration and the form of light-curve profiles. Here we discuss an idea that the impact of lensing amplification should be considerably enhanced when the shape of the flaring clump is appropriately elongated in the form of a spiral wave or a narrow filament, rather than a simple (circular) spot which we employed previously within the phenomenological `orbiting spot model'. By parameterizing the emission region in terms of the spiral shape and contrast, we are able to extend the spot model to more complicated sources. In the case of spirals, we notice a possibility that more photons reach a distant observer at the same moment because of interplay between lensing and light-travel time. The effect is not symmetrical with respect to leading versus trailing spirals, so in principle the source geometry can be constrained. In spite of this, the spot model seems to provide entirely adequate framework to study the currently available data.
description: Proceedings of the Workshop on the Black Holes and Neutron Stars, eds. S. Hledik and Z. Stuchlik, 19-21 September 2007 (Silesian University, Opava), in preparation
Hawking radiation, W-infinity algebra and trace anomalies
Creators: name: Bonora, L.
name: Cvitan, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply the "trace anomaly method" to the calculation of moments of the Hawking radiation of a Schwarzschild black hole. We show that they can be explained as the fluxes of chiral currents forming a W-infinity algebra. Then we construct the covariant version of these currents and verify that up to order 6 they are not affected by any trace anomaly. Using cohomological methods we show that actually, for the fourth order current, no trace anomalies can exist. The results reported here are strictly valid in two dimensions.
description: 22 pages, typos corrected
Creep Tide Model for the 3-Body Problem. The rotational evolution of a circumbinary planet
Creators: name: Zoppetti, F. A.
name: Folonier, H.
name: Leiva, A. M.
name: Beaugé, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a tidal model for treating the rotational evolution in the general three-body problem with arbitrary viscosities, in which all the masses are considered to be extended and all the tidal interactions between pairs are taken into account. Based on the creep tide theory, we present the set of differential equations that describes the rotational evolution of each body, in a formalism that is easily extensible to the N tidally-interacting body problem. We apply our model to the case of a circumbinary planet and use a Kepler-38 like binary system as a working example. We find that, in this low planetary eccentricity case, the most likely final stationary rotation state is the 1:1 spin-orbit resonance, considering an arbitrary planetary viscosity inside the estimated range for the solar system planets. We derive analytical expressions for the mean rotational stationary state, based on high-order power series of the semimajor axes ratio a1 /a2 and low-order expansions of the eccentricities. These are found to reproduce very accurately the mean behaviour of the low-eccentric numerical integrations for arbitrary planetary relaxation factors, and up to a1/a2 \sim 0.4. Our analytical model is used to predict the stationary rotation of the Kepler circumbinary planets and find that most of them are probably rotating in a sub-synchronous state, although the synchrony shift is much less important than the one estimated in Zoppetti et al. (2019, 2020). We present a comparison of our results with those obtained with the Constant Time Lag and find that, unlike what we assumed in our previous works, the cross torques have a non-negligible net secular contribution, and must be taken into account when computing the tides over each body in an N-extended-body system from an arbitrary reference frame. These torques are naturally taken into account in the creep theory.
Magnetic confinement of the superconducting condensate in superconductor/ferromagnet hybrid composites
Creators: name: Gillijns, W.
name: Aladyshkin, A.
name: Silhanek, A. V.
name: Moshchalkov, V. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The influence of an inhomogeneous magnetic field on the magnetoresistance of thin Al films, used in different superconductor/ferromagnet hybrids, has been investigated. Two contrasting magnetic textures with out-of-plane magnetization are explored, namely (i) a plain film in a multidomain state and (ii) an array of micro-sized dots. The stray fields of the ferromagnetic structures confine the superconducting condensate and, accordingly, modify the condition for the nucleation of superconductivity. By switching between different magnetic states of the ferromagnet, this confinement can be tuned at will, hereby reversibly changing the dependence of the critical temperature Tc on an external magnetic field H. In particular, the continuous evolution from a conventional linear Tc(H) dependence with a single maximum to a reentrant superconducting phase boundary with multiple Tc peaks has been demonstrated.
Witold Pilecki, Freiwillig nach Auschwitz. Die geheimen Aufzeichnungen des Häftlings Witold Pilecki
Creators: name: Orth, Karin
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2015

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 64 Nr. 1 (2015)
title: Musica Christiana (Leipzig 1615)
Creators: name: Frick, Christoph
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Christoph Frick
subject: 1615
subject: Burgdorf
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: Einweihungspredigt
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Musiktheorie

description: Digitale Edition der Orgelpredigt von Christoph Frick im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
title: Musica Christiana (Leipzig 1615): Einführung in die Edition
Creators: name: Braun, Lucinde
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Christoph Frick
subject: 1615
subject: Burgdorf
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Musiktheorie
subject: Quellenbeschreibung
subject: Archive
subject: protestantische Kirchenmusik
subject: Musikgeschichte
subject: Kultur- und Sozialgeschichte
subject: Konfessionalisierung

description: Einführungstext zu der digitalen Edition der Orgelpredigt von Christoph Frick im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Subspaces of frequently hypercyclic functions for sequences of composition operators
Creators: name: Bernal-González, Luis
name: Calderón-Moreno, M. Carmen
name: Jung, Andreas
name: Bassas, José A. Prado
Publisher: name: arXiv
Year: 2017
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30E10, 47B33, 47A16, 47B38

description: In this paper, a criterion for a sequence of composition operators defined on the space of holomorphic functions in a complex domain to be frequently hypercyclic is provided. Such criterion improves some already known special cases and, in addition, it is also valid to provide dense vector subspaces as well as large closed ones consisting entirely, except for zero, of functions that are frequently hypercyclic.
Regular $t$-balanced Cayley maps on split metacyclic $2$-groups
Creators: name: Chen, Haimiao
name: Zhang, Jingrui
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 05C25, 05C10, 20B25

description: A regular $t$-balanced Cayley map on a group $Γ$ is an embedding of a Cayley graph on $Γ$ into a surface with certain special symmetric properties. We completely classify regular $t$-balanced Cayley maps for a class of split metacyclic $2$-groups.
description: 15 pages
Biogeographical network analysis of plant species distribution in the Mediterranean region
Creators: name: Lenormand, Maxime
name: Papuga, Guillaume
name: Argagnon, Olivier
name: Soubeyrand, Maxence
name: De Barros, Guilhem
name: Alleaume, Samuel
name: Luque, Sandra
Publisher: name: arXiv
Year: 2018
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: The delimitation of bioregions helps to understand historical and ecological drivers of species distribution. In this work, we performed a network analysis of the spatial distribution patterns of plants in south of France (Languedoc-Roussillon and Provence-Alpes-Côte d'Azur) to analyze the biogeographical structure of the French Mediterranean flora at different scales. We used a network approach to identify and characterize biogeographical regions, based on a large database containing 2.5 million of geolocalized plant records corresponding to more than 3500 plant species. This methodology is performed following five steps, from the biogeographical bipartite network construction, to the identification of biogeographical regions under the form of spatial network communities, the analysis of their interactions and the identification of clusters of plant species based on the species contribution to the biogeographical regions. First, we identified two sub-networks that distinguish Mediterranean and temperate biota. Then, we separated eight statistically significant bioregions that present a complex spatial structure. Some of them are spatially well delimited, and match with particular geological entities. On the other hand fuzzy transitions arise between adjacent bioregions that share a common geological setting, but are spread along a climatic gradient. The proposed network approach illustrates the biogeographical structure of the flora in southern France, and provides precise insights into the relationships between bioregions. This approach sheds light on ecological drivers shaping the distribution of Mediterranean biota: the interplay between a climatic gradient and geological substrate shapes biodiversity patterns. Finally this work exemplifies why fragmented distributions are common in the Mediterranean region, isolating groups of species that share a similar eco-evolutionary history.
description: 16 pages, 7 figures + Appendix
Stochastic thermodynamics of inertial-like Stuart-Landau dimer
Creators: name: Ryu, Jung-Wan
name: Lazarescu, Alexandre
name: Marathe, Rahul
name: Thingna, Juzar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Stuart-Landau limit-cycle oscillators are a paradigm in the study of coherent and incoherent limit cycles. In this work, we generalize the standard Stuart-Landau dimer model to include effects due to an inertia-like term and noise and study its dynamics and stochastic thermodynamics. In the absence of noise (zero-temperature limit), the dynamics show the emergence of a new bistable phase where coherent and incoherent limit cycles coexist. At finite temperatures, we develop a stochastic thermodynamic framework based on the dynamics of a charged particle in a magnetic field to identify physically meaningful heat and work. The stochastic system no longer exhibits the bistable phase but the thermodynamic observables, such as work, exhibit bistability in the temporally metastable regime. We demonstrate that the inertial-like Stuart-Landau dimer operates like a machine, reliably outputting the most work when the oscillators coherently synchronize and unreliable with minimum work output when the oscillators are incoherent. Overall, our results show the importance of coherent synchronization within the working substance in the operation of a thermal machine.
description: 21 pages and 4 figures
Elemental Abundances in M31: Gradients in the Giant Stellar Stream
Creators: name: Escala, Ivanna
name: Gilbert, Karoline M.
name: Wojno, Jennifer
name: Kirby, Evan N.
name: Guhathakurta, Puragra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze existing measurements of [Fe/H] and [$α$/Fe] for individual red giant branch (RGB) stars in the Giant Stellar Stream (GSS) of M31 to determine whether spatial abundance gradients are present. These measurements were obtained from low- ($R \sim 3000$) and moderate- ($R \sim 6000$) resolution Keck/DEIMOS spectroscopy using spectral synthesis techniques as part of the Elemental Abundances in M31 survey. From a sample of 62 RGB stars spanning the GSS at 17, 22, and 33 projected kpc, we measure a [Fe/H] gradient of $-$0.018 $\pm$ 0.003 dex kpc$^{-1}$ and negligible [$α$/Fe] gradient with M31-centric radius. We investigate GSS abundance patterns in the outer halo using additional [Fe/H] and [$α$/Fe] measurements for 6 RGB stars located along the stream at 45 and 58 projected kpc. These abundances provide tentative evidence that the trends in [Fe/H] and [$α$/Fe] beyond 40 kpc in the GSS are consistent with those within 33 kpc. We also compare the GSS abundances to 65 RGB stars located along the possibly related Southeast (SE) shelf substructure at 12 and 18 projected kpc. The abundances of the GSS and SE shelf are consistent, supporting a common origin hypothesis, although this interpretation may be complicated by the presence of [Fe/H] gradients in the GSS. We discuss the abundance patterns in the context of photometric studies from the literature and explore implications for the properties of the GSS progenitor, suggesting that the high $\langle$[$α$/Fe]$\rangle$ of the GSS (+0.40 $\pm$ 0.05 dex) favors a major merger scenario for its formation.
description: Accepted to AJ. 20 pages, 10 figures, 3 tables
Observations of the Corona Borealis supercluster with the superextended Very Small Array: further constraints on the nature of the non-Gaussian CMB cold spot
Creators: name: Genova-Santos, Ricardo
name: Rubino-Martin, Jose Alberto
name: Rebolo, Rafael
name: Battye, Richard A.
name: Blanco, Francisco
name: Davies, Rod D.
name: Davis, Richard J.
name: Franzen, Thomas
name: Grainge, Keith
name: Hobson, Michael P.
name: Lasenby, Anthony
name: Padilla-Torres, Carmen P.
name: Pooley, Guy G.
name: Saunders, Richard D. E.
name: Scaife, Anna
name: Scott, Paul F.
name: Titterington, David
name: Tucci, Marco
name: Watson, Robert A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present interferometric imaging at 33 GHz, with the new superextended configuration of the Very Small Array (VSA), of a very deep decrement in the cosmic microwave background (CMB) temperature. This decrement is located in the direction of the Corona Borealis supercluster, at a position with no known galaxy clusters, and was discovered by a previous VSA survey (Genova-Santos et al.). A total area of 3 sq.deg. has now been imaged, with an angular resolution of 7 arcmin and a flux sensitivity of 5 mJy/beam. These observations confirm the presence of this strong and resolved negative spot at -41+/-5 mJy/beam (-258+/-29 muK), with a signal to noise level of 8. This structure is also present in the WMAP 5-year data. The temperature of the W-band (94 GHz) data at the position of the decrement agrees within 1.2-sigma with that observed by the VSA at 33 GHz, and within 0.2-sigma with the Sunyaev-Zel'dovich (SZ) spectrum. Our analyses show that it is a non-Gaussian feature in the CMB at a level of 4.8-sigma. The probability of finding such a deviation or larger in CMB Gaussian simulations is only 0.19 per cent. Therefore, an explanation other than primordial CMB is required. We have considered the possibility of an SZ effect generated in a diffuse, extended warm/hot gas distribution. This hypothesis is especially relevant, as the presence of such structures, if confirmed, could provide the location for a significant fraction of the missing baryons in the Local Universe.
description: Submitted to MNRAS
A reflection on Tingley's problem and some applications
Creators: name: Sánchez, Javier Cabello
Publisher: name: arXiv
Year: 2018
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: In this paper we show how some metric properties of the unit sphere of a normed space can help to approach a solution to Tingley's problem. In our main result we show that if an onto isometry between the spheres of strictly convex spaces is the identity when restricted to some relative open subset, then it is the identity. This implies that an onto isometry between the unit spheres of strictly convex finite dimensional spaces is linear if and only it is linear on a relative open set. We prove the same for arbitrary two-dimensional spaces and obtain that every two-dimensional, non strictly convex, normed space has the Mazur-Ulam Property.
 We also include some other less general, yet interesting, results, along with a generalisation of curvature to normed spaces.
description: 28 pages, one figure, accepted for publication in the Journal of Mathematical Analysis and Applications
A Model for the Formation of Large Circumbinary Disks Around Post AGB Stars
Creators: name: Akashi, Muhammad
name: Soker, Noam
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose that the large, radius of ~1000 AU, circumbinary rotating disks observed around some post-asymptotic giant branch (post-AGB) binary stars are formed from slow AGB wind material that is pushed back to the center of the nebula by wide jets. We perform 2D-axisymmetrical numerical simulations of fast and wide jets that interact with the previously ejected slow AGB wind. In each system there are two oppositely launched jets, but we use the symmetry of the problem and simulate only one jet. A large circularization-flow (vortex) is formed to the side of the jet which together with the thermal pressure of the shocked jet material accelerate cold slow-wind gas back to the center from distances of ~1000-10000 AU. We find for the parameters we use that up to 0.001 Mo is back-flowing to the center. We conjecture that the orbital angular momentum of the disk material results from the non-axisymmetric structure of jets launched by an orbiting companion. This conjecture will have to be tested with 3D numerical codes.
description: New Astronomy, in press
Cosmic string Y-junctions: a comparison between field theoretic and Nambu-Goto dynamics
Creators: name: Bevis, Neil
name: Saffin, Paul M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the formation of cosmic string Y-junctions when strings of two different types collide, which has recently become important since string theory can yield cosmic strings of distinct types. Using a model containing two types of local U(1) string and stable composites, we simulate the collision of two straight strings and investigate whether the dynamics matches that previously obtained using the Nambu-Goto action, which is not strictly valid close to the junction. We find that the Nambu-Goto action performs only moderately well at predicting when the collision results in the formation of a pair of Y-junctions (with a composite string connecting them). However, we find that when they do form, the late time dynamics matches those of the Nambu-Goto approximation very closely. We also see little radiative emission from the Y-junction system, which suggests that radiative decay due to bridge formation does not appear to be a means via which a cosmological network of such string would rapidly lose energy.
description: 17 pages, 17 figures; typo correction
Paweł Machcewicz, Rebellious Satellite
Creators: name: Behrends, Jan C.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2010

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 59 Nr. 3 (2010): Erinnerungskulturelle Spuren deutsch-polnischer Beziehungsgeschichte
Bremsstrahlung photons from stopping in heavy-ion collisions
Creators: name: Park, Sohyun
name: Wiedemann, Urs Achim
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We examine the spectrum of bremsstrahlung photons that results from the stopping of the initial net charge distributions in ultrarelativistic nucleus-nucleus collisions at the CERN Large Hadron Collier (LHC). This effect has escaped detection so far since it becomes sizable only at very low transverse momentum and at sufficiently forward rapidity. We argue that it may be within reach of the next-generation LHC heavy-ion detector ALICE-3 that is currently under study, and we comment on the physics motivation for measuring it.
description: 7 pages, 6 figures. v2: matches version published in PRC
Interseries dipole transitions from yellow to green excitons in cuprous oxide
Creators: name: Rommel, Patric
name: Main, Jörg
name: Krüger, Sjard Ole
name: Scheel, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study dipole interseries transitions between the yellow and green exciton series in cuprous oxide including the complex valence band structure. To this end, we extend previous studies of the spectrum of complex green exciton resonances [Phys. Rev. B 101, 075208 (2020)] to optical transitions between different exciton states in addition to transitions from the crystal ground state. This allows us to augment the calculations on interseries transitions using a hydrogen-like model [Phys. Rev. B 100, 085201 (2019)] by a more comprehensive treatment of the valence band structure.
description: 12 pages, 5 figures
ESR on spin-polarized atomic hydrogen at temperatures below 0.5 K
Creators: name: Statt, Bryan Wayne
Publisher: name: University of British Columbia
Year: 2010

description: Spin-polarized atomic hydrogen (H↓) gas at low temperatures (<0.5 K) has been studied using Electron Spin Resonance (ESR) techniques which allow direct measurements of the densities of H atoms in each of the two lower hyperfine states (a and b). It has been demonstrated that ESR can be made to yield accurate and detailed information about the decay of H↓ densities in time. Crucial to the analysis of the data is the ability to confine the sample of H↓, gas inside the liquid ⁴He coated microwave cavity where the magnetic field and temperature are well known. Measurements of K[sub aa] and K[sub ab], the two surface recombination rate constants, and their ratio γ=K[sub aa]/K[sub ab] have been made and from these results the binding energy of H on liquid ⁴He has been extracted. Also reported are the results of the first detailed study of the one-body surface relaxation rate which we find is due to microscopic magnetic impurities in the cell walls. Theoretical calculations of the two-body dipole-dipole relaxation rate of H↓ in the gas and on the surface are also presented.
Serre's constant of elliptic curves over the rationals
Creators: name: Daniels, Harris B.
name: González-Jiménez, Enrique
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G05, 11F80

description: Let $E$ be an elliptic curve without complex multiplication defined over the rationals. The purpose of this article is to define a positive integer $A(E)$, that we call the {\it Serre's constant associated to $E$}, that gives necessary conditions to conclude that $ρ_{E,m}$, the mod m Galois representation associated to $E$, is non-surjective. In particular, if there exists a prime factor $p$ of $m$ satisfying ${\rm val}_p(m) > {\rm val}_p(A(E))>0$ then $ρ_{E,m}$ is non-surjective. {Conditionally under Serre's Uniformity Conjecture, w}e determine all the Serre's constants of elliptic curves without complex multiplication over the rationals that occur infinitely often. Moreover, we give all the possible combination of mod $p$ Galois representations that occur for infinitely many non-isomorphic classes of non-CM elliptic curves over $\mathbb{Q}$, and the known cases that appear only finitely. We obtain similar results for the possible combination of maximal non-surjective subgroups of ${\rm GL}_2(\mathbb{Z}_p)$. Finally, we conjecture all the possibilities of these combinations and in particular all the possibilities of these Serre's constant.
description: To appear in Exp. Math
CLMM: a LSST-DESC Cluster weak Lensing Mass Modeling library for cosmology
Creators: name: Aguena, M.
name: Avestruz, C.
name: Combet, C.
name: Fu, S.
name: Herbonnet, R.
name: Malz, A. I.
name: Penna-Lima, M.
name: Ricci, M.
name: Vitenti, S. D. P.
name: Baumont, L.
name: Fan, H.
name: Fong, M.
name: Ho, M.
name: Kirby, M.
name: Payerne, C.
name: Boutigny, D.
name: Lee, B.
name: Liu, B.
name: McClintock, T.
name: Miyatake, H.
name: Sifón, C.
name: von der Linden, A.
name: Wu, H.
name: Yoon, M.
name: Collaboration, The LSST Dark Energy Science
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the v1.0 release of CLMM, an open source Python library for the estimation of the weak lensing masses of clusters of galaxies. CLMM is designed as a standalone toolkit of building blocks to enable end-to-end analysis pipeline validation for upcoming cluster cosmology analyses such as the ones that will be performed by the LSST-DESC. Its purpose is to serve as a flexible, easy-to-install and easy-to-use interface for both weak lensing simulators and observers and can be applied to real and mock data to study the systematics affecting weak lensing mass reconstruction. At the core of CLMM are routines to model the weak lensing shear signal given the underlying mass distribution of galaxy clusters and a set of data operations to prepare the corresponding data vectors. The theoretical predictions rely on existing software, used as backends in the code, that have been thoroughly tested and cross-checked. Combined, theoretical predictions and data can be used to constrain the mass distribution of galaxy clusters as demonstrated in a suite of example Jupyter Notebooks shipped with the software and also available in the extensive online documentation.
description: 21 pages, 6 figures, accepted for publication by MNRAS
title: Musica Christiana (Leipzig 1615): Exemplare
Creators: name: Braun, Lucinde
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Christoph Frick
subject: 1615
subject: Burgdorf
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Kasualdrucke
subject: alte Drucke
subject: Mediengeschichte
subject: Bibliotheken
subject: Provenienzforschung

description: Exemplarbeschreibung zu der digitalen Edition der Orgelpredigt von Christoph Frick im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Capillary filling with pseudo-potential binary Lattice-Boltzmann model
Creators: name: Chibbaro, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a systematic study of capillary filling for a binary fluid by using a mesoscopic lattice Boltzmann model for immiscible fluids describing a diffusive interface moving at a given contact angle with respect to the walls. The phenomenological way to impose a given contact angle is analysed. Particular attention is given to the case of complete wetting, that is contact angle equal to zero. Numerical results yield quantitative agreement with the theoretical Washburn law, provided that the correct ratio of the dynamic viscosities between the two fluids is used. Finally, the presence of precursor films is experienced and it is shown that these films advance in time with a square-root law but with a different prefactor with respect to the bulk interface.
description: 13 pages, 8 figures, accepted for publication on The European journal of physics E
Transverse stability of relativistic two-component jets
Creators: name: Meliani, Z.
name: Keppens, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: Astrophysical jets from various sources seem to be stratified, with a fast inner jet and a slower outer jet. As it is likely that the launching mechanism for each component is different, their interface will develop differential rotation, while the outer jet radius represents a second interface where disruptions may occur. Aims: We explore the stability of stratified, rotating, relativistic two-component jets, in turn embedded in static interstellar medium. Methods: In a grid-adaptive relativistic hydrodynamic simulation with the AMRVAC code, the non-linear azimuthal stability of two-component relativistic jets is investigated. We simulate until multiple inner jet rotations have been completed. Results: We find evidence for the development of an extended shear flow layer between the two jet components, resulting from the growth of a body mode in the inner jet, Kelvin-Helmholtz surface modes at their original interface, and their nonlinear interaction. Both wave modes are excited by acoustic waves which are reflected between the symmetry axis and the interface of the two jet components. Their interaction induces the growth of near stationary, counterrotating vortices at the outer edge of the shear flow layer. The presence of a heavy external jet allows to slow down their further development, and maintain a collimated flow. At the outer jet boundary, small-scale Rayleigh-Taylor instabilities develop, without disrupting the jet configuration. Conclusion: We demonstrate that the cross-section of two-component relativistic jets, with a heavy, cold outer jet, is non-linearly stable.
description: Accepted in A&A 24/09/2007
Reachability and recoverability of sink nodes in growing acyclic directed networks
Creators: name: Barbosa, Valmir C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the growth of networks from a set of isolated ground nodes by the addition of one new node per time step and also of a fixed number of directed edges leading from the new node to randomly selected nodes already in the network. A fixed-width time window is used so that, in general, only nodes that entered the network within the latest window may receive new incoming edges. The resulting directed network is acyclic at all times and allows some of the ground nodes, then called sinks, to be reached from some of the non-ground nodes. We regard such networks as representative of abstract systems of partially ordered constituents, for example in some of the domains related to technological evolution. Two properties of interest are the number of sinks that can be reached from a randomly chosen non-ground node (its reach) and, for a fixed sink, the number of nonoverlapping directed paths through which the sink can be reached, at a given time, from some of the latest nodes to have entered the network. We demonstrate, by means of simulations and also of analytic characterizations, that reaches are distributed according to a power law and that the desired directed paths are expected to occur in very small numbers, perhaps indicating that recovering sinks late in the process of network growth is strongly sensitive to accidental path disruptions.
title: [Orgelpredigt] (Breslau 1756)
Creators: name: Kluge, Gottlob
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Gottlob Kluge
subject: 1756
subject: Neumarkt (Schlesien)
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: Einweihungspredigt
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Musiktheorie

description: Digitale Edition der Orgelpredigt von Gottlob Kluge im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Collisional and Thermal Emission Models of Debris Disks: Towards Planetesimal Population Properties
Creators: name: Krivov, Alexander V.
name: Müller, Sebastian
name: Löhne, Torsten
name: Mutschke, Harald
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Debris disks around main-sequence stars are believed to derive from planetesimal populations that have accreted at early epochs and survived possible planet formation processes. While debris disks must contain solids in a broad range of sizes - from big planetesimals down to tiny dust grains - debris disk observations are only sensitive to the dust end of the size distribution. Collisional models of debris disks are needed to "climb up" the ladder of the collisional cascade, from dust towards parent bodies, representing the main mass reservoir of the disks. We have used our collisional code to generate five disks around a sun-like star, assuming planetesimal belts at 3, 10, 30, 100, and 200 AU with 10 times the Edgeworth-Kuiper-belt mass density, and to evolve them for 10 Gyr. Along with an appropriate scaling rule, this effectively yields a three-parametric set of reference disks (initial mass, location of planetesimal belt, age). For all the disks, we have generated spectral energy distributions (SEDs), assuming homogeneous spherical astrosilicate dust grains. A comparison between generated and actually observed SEDs yields estimates of planetesimal properties (location, total mass etc.). As a test and a first application of this approach, we have selected five disks around sun-like stars with well-known SEDs. In four cases, we have reproduced the data with a linear combination of two disks from the grid (an "asteroid belt" at 3 AU and an outer "Kuiper belt"); in one case a single, outer component was sufficient. The outer components are compatible with "large Kuiper belts" of 0.2-50 earth masses (in the bodies up to 100 km in size) with radii of 100-200 AU.
description: 16 pages, 12 figures, 5 tables, accepted for publication in The Astrophysical Journal
title: [Orgelpredigt] (Breslau 1756): Einführung in die Edition
Creators: name: Braun, Lucinde
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Gottlob Kluge
subject: 1756
subject: Neumarkt (Schlesien)
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Musiktheorie
subject: Quellenbeschreibung
subject: Archive
subject: protestantische Kirchenmusik
subject: Musikgeschichte
subject: Kultur- und Sozialgeschichte
subject: Konfessionalisierung

description: Einführungstext zu der digitalen Edition der Orgelpredigt von Gottlob Kluge im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Estimating the final spin of a binary black hole coalescence
Creators: name: Buonanno, Alessandra
name: Kidder, Lawrence E.
name: Lehner, Luis
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a straightforward approach for estimating the final black hole spin of a binary black hole coalescence with arbitrary initial masses and spins. Making some simple assumptions, we estimate the final angular momentum to be the sum of the individual spins plus the orbital angular momentum of a test particle orbiting at the last stable orbit around a Kerr black hole with a spin parameter of the final black hole. The formula we obtain is able to reproduce with reasonable accuracy the results from available numerical simulations, but, more importantly, it can be used to investigate what configurations might give rise to interesting dynamics. In particular, we discuss scenarios which might give rise to a ``flip'' in the direction of the total angular momentum of the system. By studying the dependence of the final spin upon the mass ratio and initial spins we find that our simple approach suggests that it is not possible to spin-up a black hole to extremal values through merger scenarios irrespective of the mass ratio of the objects involved.
description: 9 pages, 8 figures
title: [Orgelpredigt] (Breslau 1756): Exemplare
Creators: name: Braun, Lucinde
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Gottlob Kluge
subject: 1756
subject: Neumarkt (Schlesien)
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Kasualdrucke
subject: alte Drucke
subject: Mediengeschichte
subject: Bibliotheken
subject: Provenienzforschung

description: Exemplarbeschreibung zu der digitalen Edition der Orgelpredigt von Gottlob Kluge im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Singular Chern Classes of Schubert Varieties via Small Resolution
Creators: name: Jones, Benjamin F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14C17 (Primary); 14B05, 14M15 (Secondary)

description: We discuss a method for calculating the Chern-Schwartz-MacPherson (CSM) class of a Schubert variety in the Grassmannian using small resolutions introduced by Zelevinsky. As a consequence, we show how to compute the Chern-Mather class and local Euler obstructions using small resolutions instead of the Nash blowup. The algorithm obtained for CSM classes also allows us to prove new cases of a positivity conjecture of Aluffi and Mihalcea.
description: Addressed referee's comments, Section 6.2 contains new material; 35 pages, 3 figures, and 2 tables
Parametrized black hole quasinormal ringdown. I. Decoupled equations for nonrotating black holes
Creators: name: Cardoso, Vitor
name: Kimura, Masashi
name: Maselli, Andrea
name: Berti, Emanuele
name: Macedo, Caio F. B.
name: McManus, Ryan
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Black hole solutions in general relativity are simple. The frequency spectrum of linear perturbations around these solutions (i.e., the quasinormal modes) is also simple, and therefore it is a prime target for fundamental tests of black hole spacetimes and of the underlying theory of gravity. The following technical calculations must be performed to understand the imprints of any modified gravity theory on the spectrum: 1. Identify a healthy theory; 2. Find black hole solutions within the theory; 3. Compute the equations governing linearized perturbations around the black hole spacetime; 4. Solve these equations to compute the characteristic quasinormal modes. In this work (the first of a series) we assume that the background spacetime has spherical symmetry, that the relevant physics is always close to general relativity, and that there is no coupling between the perturbation equations. Under these assumptions, we provide the general numerical solution to step 4. We provide publicly available data files such that the quasinormal modes of {\em any} spherically symmetric spacetime can be computed (in principle) to arbitrary precision once the linearized perturbation equations are known. We show that the isospectrality between the even- and odd-parity quasinormal mode spectra is fragile, and we identify the necessary conditions to preserve it. Finally, we point out that new modes can appear in the spectrum even in setups that are perturbatively close to general relativity.
description: typo corrected in Eq.(34) to match the published version
The Higgs mechanism as a cut-off effect
Creators: name: Irges, Nikos
name: Knechtli, Francesco
name: Luz, Magdalena
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compute the Coleman-Weinberg potential with a finite cut-off for pure SU(2) and SU(3) five-dimensional gauge theories compactified on an interval. We show that besides the expected Coulomb phase located at and in the vicinity of the free infrared stable or "trivial" fixed point, the theory possesses also a Higgs phase. We compare the results from the potential computation with lattice data from simulations.
description: 22 pages, 5 figures; introduction improved, conclusions added, published in JHEP
title: Heiligung der Herzen (Königsberg 1755)
Creators: name: Kongehl, Christian Gottlieb
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Christian Gottlieb Kongehl
subject: 1755
subject: Königsberg (Preußen)
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: Einweihungspredigt
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Musiktheorie

description: Digitale Edition der Orgelpredigt von Christian Gottlieb Kongehl im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
title: Heiligung der Herzen (Königsberg 1755): Einführung in die Edition
Creators: name: Braun, Lucinde
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Christian Gottlieb Kongehl
subject: 1755
subject: Königsberg (Preußen)
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Musiktheorie
subject: Quellenbeschreibung
subject: Archive
subject: protestantische Kirchenmusik
subject: Musikgeschichte
subject: Kultur- und Sozialgeschichte
subject: Konfessionalisierung

description: Einführungstext zu der digitalen Edition der Orgelpredigt von Christian Gottlieb Kongehl im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
title: Heiligung der Herzen (Königsberg 1755): Exemplare
Creators: name: Braun, Lucinde
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Christian Gottlieb Kongehl
subject: 1755
subject: Königsberg (Preußen)
subject: Orgel
subject: Orgelpredigt
subject: Orgeleinweihung
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Kasualdrucke
subject: alte Drucke
subject: Mediengeschichte
subject: Bibliotheken
subject: Provenienzforschung

description: Exemplarbeschreibung zu der digitalen Edition der Orgelpredigt von Christian Gottlieb Kongehl im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Entanglement Entropy in the Two-Dimensional Random Transverse Field Ising Model
Creators: name: Yu, Rong
name: Saleur, Hubert
name: Haas, Stephan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The scaling behavior of the entanglement entropy in the two-dimensional random transverse field Ising model is studied numerically through the strong disordered renormalization group method. We find that the leading term of the entanglement entropy always scales linearly with the block size. However, besides this \emph{area law} contribution, we find a subleading logarithmic correction at the quantum critical point. This correction is discussed from the point of view of an underlying percolation transition, both at finite and at zero temperature.
description: 4.3 pages, 4 figures
title: Lob= und Danck=Predigt (Berlin 1753)
Creators: name: Martini, Friedrich Wilhelm
Publisher: name: DFG-Projekt "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Year: 2023
Subjects: subject: Friedrich Wilhelm Martini
subject: 1753
subject: Berlin, Neue Kirche
subject: Berlin, Neue Kirche, Peter Migendt-Orgel 1752
subject: Orgelpredigt
subject: Orgeleinweihung
subject: Einweihungspredigt
subject: digitale Edition
subject: frühe Neuzeit
subject: deutschsprachiger Raum
subject: Musiktheorie

description: Digitale Edition der Orgelpredigt von Friedrich Wilhelm Martini im Rahmen des DFG-Projekts "Deutsche Orgelpredigtdrucke zwischen 1600 und 1800 – Katalogisierung, Texterfassung, Auswertung"
Parametrisations of the D -> K l nu form factor and the determination of \hat{g}
Creators: name: Descotes-Genon, Sébastien
name: Yaouanc, Alain Le
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The vector form factor f_+(t) of the semileptonic decay D -> K l nu, measured recently with a high accuracy, can be used to determine the strong coupling constant g_{D_s^* D K}. The latter is related to the normalised coupling \hat{g} releveant in heavy-meson chiral perturbation theory. This determination relies on the estimation of the residue of the form factor at the D_s^* pole and thus on an extrapolation of the form factor in the unphysical region (m_D-m_K)^2
description: 16 pages, 2 figures. A few references added. Accepted for publication in JoPG