cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Superburst with Outburst from EXO 1745-248 in Terzan 5 with MAXI
Creators: name: Serino, Motoko
name: Mihara, Tatehiro
name: Matsuoka, Masaru
name: Nakahira, Satoshi
name: Sugizaki, Mutsumi
name: Ueda, Yoshihiro
name: Kawai, Nobuyuki
name: Ueno, Shiro
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: MAXI/GSC detected a superburst from EXO 1745-248 in the globular cluster Terzan 5 on 2011 October 24. The GSC light curve shows an exponential decay with an e-folding time of 0.3 day. The spectra are consistent with the blackbody radiation, whose temperature is 2.2 keV and 1.2 keV at MJD 55858.56 and 55859.20, respectively. The fluence is $1.4 \times 10^{42}$ erg in 2-20 keV assuming 8.7 kpc distance. The sphere radius of the blackbody and its luminosity are estimated to be 6.2 km and $1.1 \times 10^{38}$ erg s$^{-1}$, respectively, from the spectral fitting at the flux peak. Those e-folding time, temperature, softening, fluence, and radius are typical of superbursts from the low-mass X-ray binaries. The superburst was followed by an outburst 28 hours after the superburst onset. The outburst lasted for 5 days and the fluence was $4.3 \times 10^{42}$ erg. The instability of the accretion disk caused by the superburst would be an explanation for the outburst, whereas the mass accretion of the matter evaporated from surface of the companion star by the superburst would be another possibility.
description: 5 pages 4 figures
Velocity of Light in Dark Matter with Charge
Creators: name: Oda, Ichiro
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an interesting mechanism to reconcile the recent experiments of the Michelson-Morley type and slowdown of the velocity of light in dark matter with a fractional electric charge when the index of refraction of dark matter depends on the frequency of a photon. After deriving the formula for the velocity of light in a medium with the index of refraction $n(ω)$ in a relativistic regime, it is shown that the local anisotropy of the light speed is proportional to the second order in $n(ω) - 1$. This result implies that the experiments of the Michelson-Morley type do not give rise to a stringent constraint on the slowdown of the velocity of light in dark matter with electric charge.
description: 10 pages
Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
Creators: name: Son, D. T.
name: Spivak, B. Z.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the classical magnetoresistance of a Weyl metal in which the electron Fermi surface possess nonzero fluxes of the Berry curvature. Such a system may exhibit large negative magnetoresistance with unusual anisotropy as a function of the angle between the electric and magnetic fields. In this case the system can support a new type of plasma waves. These phenomena are consequences of chiral anomaly in electron transport theory.
description: 4 pages, 2 figures
Universal Relations for Neutron Star F-Mode and G-Mode Oscillations
Creators: name: Zhao, Tianqi
name: Lattimer, James M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Among the various oscillation modes of neutron stars, f- and g- modes are the most likely to be ultimately observed in binary neutron star mergers. The f-mode is known to correlate in normal neutron stars with their tidal deformability, moment of inertia and quadrupole moment. Using a piecewise polytropic parameterization scheme to model the uncertain hadronic high-density EOS and a constant sound-speed scheme to model pure quark matter, we refine this correlation and show that these universal relations also apply to both self-bound stars and hybrid stars containing phase transitions. We identify a novel 1-node branch of the f-mode that occurs in low-mass hybrid stars in a narrow mass range just beyond the critical mass necessary for a phase transition to appear. This 1-node branch shows the largest, but still small, deviations from the universal correlation we have found. The g-mode frequency only exists in matter with a non-barotropic equation of state involving temperature, chemical potential or composition, or a phase transition in barotropic matter. The g-mode therefore could serve as a probe for studying phase transitions in hybrid stars. In contrast with the f-mode, discontinuity g-mode frequencies depend strongly on properties of the transition (the density and the magnitude of the discontinuity) at the transition. Imposing causality and maximum mass constraints, the g-mode frequency in hybrid stars is found to have an upper bound of about 1.25 kHz. However, if the sound speed c_s in the inner core at densities above the phase transition density is restricted to c_s^2 < c^2/3, the g-mode frequencies can only reach about 0.8 kHz, which are significantly lower than f-mode frequencies, 1.3-2.8 kHz. Also, g-mode gravitational wave damping times are extremely long, >10^4 s (10^2 s) in the inner core with c_s^2< c^{2/3} (c^2), in comparison with the f-mode damping time, 0.1-1 s.
description: 23 pages, 16 figures
119Sn NMR probe of magnetic fluctuations in SnO2 nanoparticles
Creators: name: Dey, Tusharkanti
name: Khuntia, P.
name: Mahajan, A. V.
name: Kumar, Nitesh
name: Sundaresan, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: 119Sn nuclear magnetic resonance (NMR) spectra and spin-lattice relaxation rate (1/T1) in SnO2 nanoparticles were measured as a function of temperature and compared with those of SnO2 bulk sample. A 15% loss of 119Sn NMR signal intensity for the nano sample compared to the bulk sample was observed. This is indicative of ferromagnetism from a small fraction of the sample. Another major finding is that the recovery of the 119Sn longitudinal nuclear magnetization in the nano sample follows a stretched exponential behavior, as opposed to that in bulk which is exponential. Further, the 119Sn 1/T1 at room temperature is found to be much higher for the nano sample than for its bulk counterpart. These results indicate the presence of magnetic fluctuations in SnO2 nanoparticles in contrast to the bulk (non-nano) which is diamagnetic. These local moments could arise from surface defects in the nanoparticles.
description: 5 pages, 6 figures, to appear in EPL 2011
Scalar Perturbations Through Cycles
Creators: name: Liu, Zhi-Guo
name: Piao, Yun-Song
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analytically and numerically investigate the evolutions of the scalar perturbations through the cycles with nonsingular bounce. It is found that the amplitude of the curvature perturbation on large scale will be amplified cycle by cycle, and the isocurvature perturbations also obtain an amplification, but the rate of its amplification is slower than that of curvature perturbation, unless its coupling to the metric perturbation is not negligible.
description: 7 pages, 10 figures
Untitled ItemIn vitro analysis of quercetin-like compounds from Mistletoe Dendrophthoe pentandra (L.) Miq as a potential antiviral agent for Newcastle disease
Creators: name: Lazuardi, Mochamad
name: Khairat, Jasmine
name: Lim, Vuanghao
name: Selvaraja, Malarvili
Publisher: name: figshare
Year: 2023
Subjects: Veterinary pharmacology
Veterinary sciences not elsewhere classified

description: Research data in vitro tests in cell culture with positive control, negative control and comparison using Acethyl ethylene imine and in vitro anti-virus tests using Quercetine-like compounds LC ranging from the highest dilution (1/1 to the lowest dilution 1/9)
Energy-sensitive scatter estimation and correction for spectral x-ray imaging with photon-counting detectors
Creators: name: Lewis, Cale E.
name: Das, Mini
Publisher: name: arXiv
Year: 2022
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: As photon counting detectors are being explored for medical and industrial imaging applications, there is a critical need to understand spectral characteristics of scattered x-ray photons. Scattered radiation is detrimental to x-ray imaging by reducing image quality and quantitative accuracy. While various scatter correction techniques have been proposed for x-ray imaging with conventional energy-integrating detectors, additional efforts are required to develop approaches for spectral x-ray imaging with energy-resolving PCDs. We show the benefits of accurate scatter estimation and correction for each energy bin when using a photon counting detector. We propose a scatter estimation model that accounts for the energy-dependent scatter characteristics in projection x-ray imaging. This can then be used to restore quantitative accuracy for spectral x-ray imaging with PCDs. Results are shown in the context of contrast-enhanced spectral mammography using dual-energy subtraction to digitally isolate iodine targets. In the presence of scatter, the projected iodine densities are increasingly underestimated as the object thickness increases. The energysensitive scatter correction improves the iodine density estimation. These results suggest that our scatter estimation model can accurately account for the energy-dependent scatter distribution, which can be an effective tool for scatter compensation in spectral x-ray imaging. Implementing this scatter estimation model does not require any modifications to the acquisition parameters and is transferable to other x-ray imaging applications such as tomosynthesis and CT.
description: 14 pages, 14 figures
An ultra-deep multi-band VLA survey of the faint radio sky (COSMOS-XS): New constraints on the cosmic star formation history
Creators: name: van der Vlugt, D.
name: Hodge, J. A.
name: Algera, H. S. B.
name: Smail, I.
name: Leslie, S. K.
name: Radcliffe, J. F.
name: Riechers, D. A.
name: Röttgering, H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We make use of ultra-deep 3 GHz Karl G. Jansky Very Large Array observations of the COSMOS field from the multi-band COSMOS-XS survey to infer radio luminosity functions (LFs) of star-forming galaxies (SFGs). Using $\sim$1300 SFGs with redshifts out to $z\sim4.6$, and fixing the faint and bright end shape of the radio LF to the local values, we find a strong redshift trend that can be fitted by pure luminosity evolution with the luminosity parameter given by $α_L \propto (3.40 \pm 0.11) - (0.48 \pm 0.06)z$. We then combine the ultra-deep COSMOS-XS data-set with the shallower VLA-COSMOS $\mathrm{3\,GHz}$ large project data-set over the wider COSMOS field in order to fit for joint density+luminosity evolution, finding evidence for significant density evolution. By comparing the radio LFs to the observed far-infrared (FIR) and ultraviolet (UV) LFs, we find evidence of a significant underestimation of the UV LF by $21.6\%\, \pm \, 14.3 \, \%$ at high redshift ($3.3\,<\,z\,<\,4.6$, integrated down to $0.03\,L^{\star}_{z=3}$). We derive the cosmic star formation rate density (SFRD) by integrating the fitted radio LFs and find that the SFRD rises up to $z\,\sim\,1.8$ and then declines more rapidly than previous radio-based estimates. A direct comparison between the radio SFRD and a recent UV-based SFRD, where we integrate both LFs down to a consistent limit ($0.038\,L^{\star}_{z=3}$), reveals that the discrepancy between the radio and UV LFs translates to a significant ($\sim$1 dex) discrepancy in the derived SFRD at $z>3$, even assuming the latest dust corrections and without accounting for optically dark sources.
description: Submitted to ApJ; 27 pages, 13 figures, 4 tables
Inferring Pitch from Coarse Spectral Features
Creators: name: Ma, Danni
name: Ryant, Neville
name: Liberman, Mark
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Fundamental frequency (F0) has long been treated as the physical definition of "pitch" in phonetic analysis. But there have been many demonstrations that F0 is at best an approximation to pitch, both in production and in perception: pitch is not F0, and F0 is not pitch. Changes in the pitch involve many articulatory and acoustic covariates; pitch perception often deviates from what F0 analysis predicts; and in fact, quasi-periodic signals from a single voice source are often incompletely characterized by an attempt to define a single time-varying F0. In this paper, we find strong support for the existence of covariates for pitch in aspects of relatively coarse spectra, in which an overtone series is not available. Thus linear regression can predict the pitch of simple vocalizations, produced by an articulatory synthesizer or by human, from single frames of such coarse spectra. Across speakers, and in more complex vocalizations, our experiments indicate that the covariates are not quite so simple, though apparently still available for more sophisticated modeling. On this basis, we propose that the field needs a better way of thinking about speech pitch, just as celestial mechanics requires us to go beyond Newton's point mass approximations to heavenly bodies.
Tegning av Olavshallen
Creators: name: Hilfling-Rasmussen, Jens Carl Frederik
name: Hilfling-Rasmussen
Publisher: name: Unknown
Year: 1930
Subjects: Udefinert

description: Arkitekt Claus Hjelte, byggekunst. Tegning av utstillingsarealet Olavshallen i Det Kongelige Norske Videnskabers Selskabs Museum under Olavsjubileet.
Group Theory Analysis of Phonons in Monolayer Chromium Trihalides and Their Janus Structures
Creators: name: Liu, Y. C.
name: Niu, H. B.
name: Lin, J. B.
name: Wang, V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A contrastive investigation of the symmetry aspects of phonons in monolayer chromium trihalides and their Janus structures Y$_3$-Cr$_2$-X$_3$ (X, Y = F, Cl, Br, I) by group theory is presented. We first classify all phonons at the Brillouin-zone center ($Γ$) into the irreducible representation. Then the infrared and Raman activity of optic phonons, Raman tensors, and the possible polarization assignments of R active phonons are predicted. Base on these results, we clarify the the discrepancy about the Raman activity o optic modes in monolayer CrI$_3$. Besides, we find that the Raman and infrared spectra for X$_3$-Cr$_2$-X$_3$ are exclusive, whereas that for Janus Y$_3$-Cr$_2$-X$_3$ are coincident. This distinction is vital for optic spectra identification of Janus Y$_3$-Cr$_2$-X$_3$ monolayer from X$_3$-Cr$_2$-X$_3$ monolayer. In addition, we derive the symmetry-matched phonon eigenfunctions and corresponding schematic representations of the eigenvectors for both F$_3$-Cr$_2$-I$_3$ and I$_3$-Cr$_2$-I$_3$ monolayer, which demonstrate intuitively the origin of phonon chirality and magnetism. At last, our analysis indicates that the spin-phonon coupling, the magneto-optical effect of infrared and Raman active phonons, and phonon chirality should be observed in Janus Y$_3$-Cr$_2$-X$_3$ monolayer as that and even easier than that in X$_3$-Cr$_2$-X$_3$ monolayer. Our work provides a detailed guiding map for experimental characterization of Y$_3$-Cr$_2$-X$_3$ monolayer, and also reveals important effects of optic phonons in Janus Y$_3$-Cr$_2$-X$_3$ monolayer.
Direct observation of magnetocaloric effect by differential thermal analysis: influence of experimental parameters
Creators: name: Habarnau, Yamila Rotstein
name: Bergamasco, Pablo
name: Sacanell, Joaquin
name: Leyva, Gabriela
name: Albornoz, Cecilia
name: Quintero, Mariano
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnetocaloric effect is the isothermal change of magnetic entropy and the adiabatic temperature change induced in a magnetic material when an external magnetic field is applied. In this work, we present an experimental setup to study this effect in metamagnetic transitions, using the differential thermal analysis technique, which consists in measuring simultaneously the temperatures of the sample of interest and a reference one while an external magnetic field ramp is applied. We have tested our system to measure the magnetocaloric effect in La0.305Pr0.32Ca0.375MnO3, which presents phase separation effects at low temperatures (T < 200 K). We obtain \DeltaT vs H curves, and analyze how the effect varies by changing the rate of the magnetic field ramp. Our results show that the intensity of the effect increases with the magnetic field change rate. We also have obtained the effective heat capacity of the system without the sample by performing calorimetric measurements using a pulse heat method, fitting the temperature change with a two tau description. With this analysis, we are able to describe the influence of the environment and subtract it to calculate the adiabatic temperature change of the sample.
description: Acepted to be published in Physica B
Der Stoß eines Wasserkeils gegen eine keilförmige Wand
Creators: name: Meyerhoff, Wibo Kay
Publisher: name: TUHH Universitätsbibliothek
Year: 1967
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Der Stoß eines Wasserkeils gegen eine keilförmige Wand
Pulse Profiles and Polarization of Terzan 5 Pulsars
Creators: name: Martsen, Ashley R.
name: Ransom, Scott M.
name: DeCesar, Megan E.
name: Freire, Paulo C. C.
name: Hessels, Jason W. T.
name: Ho, Anna Y. Q.
name: Lynch, Ryan S.
name: Stairs, Ingrid H.
name: Wang, Yuankun
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Terzan 5 is a rich globular cluster within the galactic bulge that contains 39 known millisecond pulsars, the largest known population of any globular cluster. The Terzan 5 pulsars are faint, so that individual observations of most of the pulsars have too little signal-to-noise (S/N) to measure reliable flux density or polarization information. We combined over 5.2\,days of archival data, at each of 1.5\,GHz and 2.0\,GHz, taken with the Green Bank Telescope over the past 11\,years. We created high S/N profiles for 32 of the pulsars and determined precise rotation measures (RMs) for 28 of them. We used the RMs, and the known pulsar positions and dispersion measures (DMs), to map the projected parallel component of the Galactic magnetic field toward the cluster. The $\langle B_{||}\rangle$ shows a rough gradient of $\sim$6\,nG/arcsec ($\sim$160\,nG/parsec), or fractionally, a change of $\sim$20$\%$ in the right ascension direction across the cluster, implying Galactic magnetic field variability at sub-parsec scales. We also measured average flux densities $S_ν$ for the pulsars, ranging from $\sim$10\,$μ$Jy to $\sim$2\,mJy, and an average spectral index $α= -1.35$, where $S_ν\propto ν^α)$. This spectral index is flatter than most known pulsars, likely a selection effect due to the high frequencies used in pulsar searches to mitigate dispersion and scattering. The inferred pulsar luminosity function is roughly power-law, with slope $(d\log N)/(d\log L) = -1$ at the high-luminosity end. At the low-luminosity end, there are incompleteness effects implying that Terzan 5 contains many more pulsars to be found.
description: 12 pages, 4 figures, Accepted to The Astrophysical Journal on November 7 2022. Updates from previous draft include: analysis of time variability of flux densities, inclusion of chi^2 of fits, and other slight modifications for clarity
Reply to Comment on "Critical analysis of a variational method used to describe molecular electron transport"
Creators: name: Baldea, Ioan
name: Köppel, Horst
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that the failure of the Delaney-Greer (DG) variational ansatz for transport demonstrated by us in Phys.\ Rev.\ B {\bf 80}, 165301 (2009) (I) is not related to an unsuitable constraint that prevents a broken time-reversal symmetry or to real orbitals, as DG incorrectly claim. The complex orbitals suggested by them as a way-out solution merely represent a particular case of the general case considered by us in I, which do not in the least affect our conclusion.
description: Manuscript as submitted to Phys. Rev. B on 30 November 2010. Sections VII, VIII, and IX present significant details, which enlarge the analysis of the published version
Two particles interacting via a contact interaction on $S^2$
Creators: name: Schuh, Dominic
name: Luu, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider two particles interacting via a contact interaction that are constrained to a sphere, or $S^2$. We determine their spectrum to arbitrary precision and for arbitrary angular momentum. We show how the non-inertial frame leads to non-trivial solutions for different angular momenta. Our results represent an extension of the finite-volume Lüscher formulas but now to a non-trivial geometry. We apply our results to predict the spectrum of select two-nucleon halo nuclei and compare with experimental results.
description: 24 pages, 6 figures
MPEC 2023-H42 : 2023 HK
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HK

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 8 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Superpotentials from Singular Divisors
Creators: name: Gendler, Naomi
name: Kim, Manki
name: McAllister, Liam
name: Moritz, Jakob
name: Stillman, Mike
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study Euclidean D3-branes wrapping divisors $D$ in Calabi-Yau orientifold compactifications of type IIB string theory. Witten's counting of fermion zero modes in terms of the cohomology of the structure sheaf $\mathcal{O}_D$ applies when $D$ is smooth, but we argue that effective divisors of Calabi-Yau threefolds typically have singularities along rational curves. We generalize the counting of fermion zero modes to such singular divisors, in terms of the cohomology of the structure sheaf $\mathcal{O}_{\overline{D}}$ of the normalization $\overline{D}$ of $D$. We establish this by detailing compactifications in which the singularities can be unwound by passing through flop transitions, giving a physical incarnation of the normalization process. Analytically continuing the superpotential through the flops, we find that singular divisors whose normalizations are rigid can contribute to the superpotential: specifically, $h^{\bullet}_{+}(\mathcal{O}_{\overline{D}})=(1,0,0)$ and $h^{\bullet}_{-}(\mathcal{O}_{\overline{D}})=(0,0,0)$ give a sufficient condition for a contribution. The examples that we present feature infinitely many isomorphic geometric phases, with corresponding infinite-order monodromy groups $Γ$. We use the action of $Γ$ on effective divisors to determine the exact effective cones, which have infinitely many generators. The resulting nonperturbative superpotentials are Jacobi theta functions, whose modular symmetries suggest the existence of strong-weak coupling dualities involving inversion of divisor volumes.
description: 31 pages, 4 figures
Schuchhardt, Carl. „Deutsche Vor- und Frühgeschichte in Bildern"
Creators: name: Asmus, Wolfgang-Dietrich
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2020

description: Rezension zu: Schuchhardt, Carl. „Deutsche Vor- und Frühgeschichte in Bildern". 80 Tafeln. München und Berlin 1936. Verlag von R. Oldenburg
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 10 (1936): Nachrichten aus Niedersachsens Urgeschichte
Vector to pseudoscalar meson radiative transitions in chiral theory with resonances
Creators: name: Ivashyn, Sergiy
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The form factor of the vector meson V conversion transition into the pseudoscalar meson P and the lepton pair l+l- is presented for V=rho0,omega,phi and P=pi0,eta. Our approach is based on the chiral effective field theory with resonances. The normalized form factor for omega -> pi gamma* transition was fitted to the recent NA 60 data by varying the only free parameter sigma_V. The results are compared to the available data and to the predictions of other models.
description: 4 pages, 2 figures, based on the talk given at the 3rd International Conference "Quantum Electrodynamics and Statistical Physics" (QEDSP2011), 29.08-02.092011, Kharkov, Ukraine; http://vant.kipt.kharkov.ua/ARTICLE/VANT_2012_1/article_2012_1_179.pdf
The Impact of an Overlaid Ripple Current on Battery Aging: The Development of the SiCWell Dataset
Creators: name: Goldammer, Erik
name: Gentejohann, Marius
name: Schlüter, Michael
name: Weber, Daniel
name: Wondrak, Wolfgang
name: Dieckerhoff, Sibylle
name: Gühmann, Clemens
name: Kowal, Julia
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::621 Angewandte Physik
subject: battery aging
subject: ripple current
subject: lithium-ion batteries
subject: LIBs
subject: current harmonics
subject: neural network
subject: electric vehicle
subject: dataset

description: Fast-switching semiconductors induce ripple currents on the high-voltage DC bus in the electric vehicle (EV). This paper describes the methods used in the project SiCWell and a new approach to investigate the influence of these overlaid ripples on the battery in EVs. The ripple current generated by the main inverter is demonstrated with a measurement obtained from an electric vehicle. A simulation model is presented which is based on an artificial reference DC bus, according to ISO 21498-2, and uses driving cycles in order to obtain current profiles relevant for battery cycling. A prototype of a battery cycling tester capable of high frequency and precise ripple current generation was developed and is used to cycle cells with superimposed ripple currents within an aging study. To investigate the impact of the frequency and the amplitude of the currents on the battery’s lifetime, these ripple parameters are varied between different test series. Cell parameters such as impedance and capacity are regularly characterized and the aging of the cells is compared to standard DC cycled reference cells. The aging study includes a total of 60 automotive-sized pouch cells. The evaluation of ripple currents and their impact on the battery can improve the state-of-health diagnosis and remaining-useful life prognosis. For the development and validation of such methods, the cycled cells are monitored with a measurement system that regularly measures current and voltage with a sampling rate of 2 MHz. The resulting dataset is suitable for the design of future ripple current aging studies as well as for the development and validation of aging models and methods for battery diagnosis.
MPEC 2023-H43 : 2023 HL
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HL

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Multi-object spectroscopy of stars in the CoRoT fields I: Early-type stars in the CoRoT-fields IRa01, LRa01, LRa02
Creators: name: Sebastian, D.
name: Guenther, E. W.
name: Schaffenroth, V.
name: Gandolfi, D.
name: Geier, S.
name: Heber, U.
name: Deleuil, M.
name: Moutou, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Observations of giant stars indicate that the frequency of giant planets is much higher for intermediate-mass stars than for solar-like stars. Up to now all known planets of giant stars orbit at relatively far distances from their host stars. It is not known whether intermediate-mass stars also had many close-in planets when they were on the main sequence, which were then engulfed when the star became a giant star. To understand the formation and evolution of planets it is therefore important to find out whether main-sequence stars of intermediate-mass have close-in planets or not. A survey for transiting planets of intermediate-mass stars would be ideal to solve this question, because the detection of transiting planets is not affected by the rapid rotation of these stars. As a first step for an efficient survey we need to identify intermediate-mass stars in the CoRoT-fields, which can then be used as an input list. To compile the input list we derived the spectral types of essentially all O, B and A stars down to 14.5 mag in the CoRoT fields IRa01, LRa01, LRa02 taken with the multi-object spectrograph AAOmega. We determined the spectral types by comparing the spectra with template spectra from a library. In total we identify 1856 A and B stars that have been observed with CoRoT. Given the number of planets that have been detected in these fields amongst late-type stars, we estimate that there are one to four transiting planets of intermediate-mass stars waiting to be discovered. Our survey not only allows us to carry out a dedicated planet search programme but is also essential for any types of studies of the light curves of early-type stars in the CoRoT database. We also show that it would be possible to extend the survey to all fields that CoRoT has observed using photometrically determined spectral types.
description: 57 pages, 12 figures, accepted for publication in Astronomy and Astrophysics
[Arkitekttegning]
Creators: name: Hilfling-Rasmussen, Jens Carl Frederik
name: Hilfling-Rasmussen
Publisher: name: Unknown
Year: 1930
Subjects: Udefinert

description: Fasadetegning og plantegning av et hus. Avfotografert som en del av oppdrag med "malerier i kunstforeningen".
1636 – Ihre letzte Schlacht. Leben im Dreißigjährigen Krieg
Creators: name: Melisch, Claudia Maria
Publisher: name: Acta Praehistorica et Archaeologica
Year: 2020

description: Rezension zu: 1636 – Ihre letzte Schlacht. Leben im Dreißigjährigen Krieg. Begleitbuch zur gleichnamigen Wanderausstellung. Herausgegeben vom Brandenburgischen Landesamt für Denkmalpflege und Archäologischem Landesmuseum durch Sabine Eickhoff und Franz Schopper. Theiss-Verlag, Stuttgart 2012. 205 S. ISBN 978-3-8062-2632-4
description: Acta Praehistorica et Archaeologica, Bd. 45 (2013)
The impact of galaxy interactions on AGN activity in zCOSMOS
Creators: name: Silverman, J. D.
name: Kampczyk, P.
name: Jahnke, K.
name: Andrae, R.
name: Lilly, S.
name: Elvis, M.
name: Civano, F.
name: Mainieri, V.
name: Vignali, C.
name: Zamorani, G.
name: Nair, P.
name: Fevre, O. Le
name: de Ravel, L.
name: Bardelli, S.
name: Bongiorno, A.
name: Bolzonella, M.
name: Brusa, M.
name: Cappelluti, N.
name: Cappi, A.
name: Caputi, K.
name: Carollo, C. M.
name: Contini, T.
name: Coppa, G.
name: Cucciati, O.
name: de la Torre, S.
name: Franzetti, P.
name: Garilli, B.
name: Halliday, C.
name: Hasinger, G.
name: Iovino, A.
name: Knobel, C.
name: koekemoer, A.
name: Kovac, K.
name: Lamareille, F.
name: Borgne, J. -F. Le
name: Brun, V. Le
name: Maier, C.
name: Mignoli, M.
name: Pello, R.
name: Montero, E. Perez
name: Ricciardelli, E.
name: Peng, Y.
name: Scodeggio, M.
name: Tanaka, M.
name: Tasca, L.
name: Tresse, L.
name: Vergani, D.
name: Zucca, E.
name: Comastri, A.
name: Finoguenov, A.
name: Fu, H.
name: Gilli, R.
name: Hao, H.
name: Ho, L.
name: Salvato, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Close encounters between galaxies are expected to be a viable mechanism, as predicted by numerical simulations, by which accretion onto supermassive black holes can be initiated. To test this scenario, we construct a sample of 562 galaxies (M*>2.5x10^10 M_sun) in kinematic pairs over the redshift range 0.25 < z < 1.05 that are more likely to be interacting than a well-matched control sample of 2726 galaxies not identified as being in a pair, both from the zCOSMOS 20k spectroscopic catalog. Galaxies that harbor an active galactic nucleus (AGN) are identified on the basis of their X-ray emission (L_x>2x10^42 erg s^-1) detected by Chandra. We find a higher fraction of AGN in galaxies in pairs relative to isolated galaxies of similar stellar mass. Our result is primarily due to an enhancement of AGN activity, by a factor of 1.9 (observed) and 2.6 (intrinsic), for galaxies in pairs of projected separation less than 75 kpc and line-of-sight velocity offset less than 500 km s^-1. This study demonstrates that close kinematic pairs are conducive environments for black hole growth either indicating a causal physical connection or an inherent relation, such as, to enhanced star formation. In the Appendix, we describe a method to estimate the intrinsic fractions of galaxies (either in pairs or the field) hosting an AGN with confidence intervals, and an excess fraction in pairs. We estimate that 17.8_{-7.4}^{+8.4}% of all moderate-luminosity AGN activity takes place within galaxies undergoing early stages of interaction that leaves open the question as to what physical processes are responsible for fueling the remaining ~80% that may include late-stage mergers.
description: 11 pages, 8 figures, Accepted by The Astrophysical Journal
Volker Michael Strocka, Die Wandmalerei der Hanghäuser in Ephesos
Creators: name: Thomas, Renate
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Volker Michael Strocka, Die Wandmalerei der Hanghäuser in Ephesos, mit einem Beitrag von Hermann Vetters. Forschungen in Ephesos VIII/1. Verlag der Österreichischen Akademie der Wissenschaften, Wien 1977. Textband 148 Seiten, 42 Textabb., 1 chronologische Tabelle, Tafelband mit 466 Abb. davon 193 farbig, 1 Faltplan.
description: Bonner Jahrbücher, Bd. 185.1985: Bonner Jahrbücher
Non-local spin entanglement in a fermionic chain
Creators: name: Jana, Sayan
name: Varma, Anant V.
name: Saha, Arijit
name: Das, Sourin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: An effective two-spin density matrix (TSDM) for a pair of spin-$1/2$ degree of freedom, residing at a distance of $R$ in a spinful Fermi sea, can be obtained from the two-electron density matrix following the framework prescribed in Phys. Rev. A 69, 054305 (2004). We note that the single spin density matrix (SSDM) obtained from this TSDM for generic spin-degenerate systems of free fermions is always pinned to the maximally mixed state $i.e.$ $(1/2) \ \mathbb{I}$, independent of the distance $R$ while the TSDM confirms to the form for the set of maximally entangled mixed state (the so called "X-state") at finite $R$. The X-state reduces to a pure state (a singlet) in the $R\rightarrow 0$ limit while it saturates to an X-state with largest allowed value of von-Neumann entropy of $2 \ln2$ as $R \rightarrow \infty$ independent of the value of chemical potential. However, once an external magnetic field is applied to lift the spin-degeneracy, we find that the von-Neumann entropy of SSDM becomes a function of the distance $R$ between the two spins. We also show that the von-Neumann entropy of TSDM in the $R\rightarrow \infty$ limit becomes a function of the chemical potential and it saturate to $2 \ln2$ only when the band in completely filled unlike the spin-degenerate case. Finally we extend our study to include spin-orbit coupling and show that it does effect these asymptotic results. Our findings are in sharp contrast with previous works which were based on continuum models owing to physics which stem from the lattice model.
description: 7 pages, 5 figures
A Surprising Dynamical Mass for V773~Tau~B
Creators: name: Boden, A.
name: Torres, G.
name: Duchene, G.
name: Konopacky, Q.
name: Ghez, A.
name: Torres, R.
name: Loinard, L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on new high-resolution imaging and spectroscopy on the multiple T Tauri star system V773 Tau over the 2003 -- 2009 period. With these data we derive relative astrometry, photometry between the A and B components, and radial velocity (RV) of the A-subsystem components. Combining these new data with previously published astrometry and RVs, we update the relative A-B orbit model. This updated orbit model, the known system distance, and A subsystem parameters yields a dynamical mass for the B component for the first time. Remarkably the derived B dynamical mass is in the range of 1.7 -- 3.0 M$_\sun$. This is much higher than previous estimates, and suggests that like A, B is also a multiple stellar system. Among these data, spatially-resolved spectroscopy provide new insight into the nature of the B component. Similar to A, these near-IR spectra indicate that the dominant source in B is of mid-K spectral type. If B is in fact a multiple star system as suggested by the dynamical mass estimate, the simplest assumption is that B is composed of similar $\sim$ 1.2 M$_\sun$ PMS stars in a close ($
description: 22 pages, 7 figures, accepted for publication ApJ. Companion paper to R. Torres et al arXiv:1112.0114. Table 2 (RV Data Table) to appear in on-line version
Low Metallicity ISM: excess submillimetre emission and CO-free H2 gas
Creators: name: Madden, Suzanne C.
name: Remy, Aurelie
name: Galliano, Frederic
name: Galametz, Maud
name: Bendo, George
name: Cormier, Diane
name: Lebouteiller, Vianney
name: Hony, Sacha
name: Consortium, the Herschel SAG 2
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The low metallicity interstellar medium of dwarf galaxies gives a different picture in the far infrared(FIR)/submillimetre(submm)wavelengths than the more metal-rich galaxies. Excess emission is often found in the submm beginning at or beyond 500 mu. Even without taking this excess emission into account as a possible dust component, higher dust-to-gas mass ratios (DGR) are often observed compared to that expected from their metallicity for moderately metal-poor galaxies. The SEDs of the lowest metallicity galaxies, however, give very low dust masses and excessively low values of DGR, inconsistent with the amount of metals expected to be captured into dust if we presume the usual linear relationship holding for all metallicities, including the more metal-rich galaxies. This transition seems to appear near metalllicities of 12 + log(O/H) ~ 8.0 - 8.2. These results rely on accurately quantifying the total molecular gas reservoir, which is uncertain in low metallicity galaxies due to the difficulty in detecting CO(1-0) emission. Dwarf galaxies show an exceptionally high [CII] 158 mu/CO (1-0) ratio which may be indicative of a significant reservoir of 'CO-free' molecular gas residing in the photodissociated envelope, and not traced by the small CO cores.
description: Conference proceedings IAU Symposium 284 "The Spectral energy distribution of galaxies", 5-9 September 2011, Preston, UK
Multiband effects on beta-FeSe single crystals
Creators: name: Lei, Hechang
name: Graf, D.
name: Hu, Rongwei
name: Ryu, Hyejin
name: Choi, E. S.
name: Tozer, S. W.
name: Petrovic, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present the upper critical fields Hc2(T) and Hall effect in beta-FeSe single crystals. The Hc2(T) increases as the temperature is lowered for field applied parallel and perpendicular to (101), the natural growth facet of the crystal. The Hc2(T) for both field directions and the anisotropy at low temperature increase under pressure. Hole carriers are dominant at high magnetic fields. However, the contribution of electron-type carriers is significant at low fields and low temperature. Our results show that multiband effects dominate Hc2(T) and electronic transport in the normal state.
Indecomposable doubling for representations of the type I Lie superalgebras sl(m/n) and osp(2/2n)
Creators: name: Jarvis, Peter D.
name: Thierry-Mieg, Jean
Publisher: name: arXiv
Year: 2022
Subjects: subject: Representation Theory (math.RT)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We establish that for the type I Lie superalgebras $sl(m/n)$ and $osp(2/2n)$, each Kac module admits a 1 parameter family of indecomposable double extensions. The result follows from the explicit evaluation of the $H^1$ Lie superalgebra cohomology valued in the tensor product of the module and its dual.
description: 14 pages, LaTeX. Minor corrections and clarifications added. Citation added
Quantum bath engineering of a high impedance microwave mode through quasiparticle tunneling
Creators: name: Aiello, Gianluca
name: Féchant, Mathieu
name: Morvan, Alexis
name: Basset, Julien
name: Aprili, Marco
name: Gabelli, Julien
name: Estève, Jérôme
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate a new approach to dissipation engineering in microwave quantum optics. For a single mode, dissipation usually corresponds to quantum jumps, where photons are lost one by one. Here, we are able to tune the minimal number of lost photons per jump to be two (or more) with a simple dc voltage. As a consequence, different quantum states experience different dissipation. Causality implies that the states must also experience different energy shifts. Our measurements of these Lamb shifts are in good agreement with the predictions of the Kramers-Kronig relations for single quantum states in a regime of highly non-linear bath coupling. This work opens new possibilities for quantum state manipulation in circuit QED, without relying on the Josephson effect.
The JCMT Nearby Galaxies Legacy Survey VIII. CO data and the L(CO3-2)-L(FIR) correlation in the SINGS sample
Creators: name: Wilson, C. D.
name: Warren, B. E.
name: Israel, F. P.
name: Serjeant, S.
name: Attewell, D.
name: Bendo, G. J.
name: Butner, H. M.
name: Chanial, P.
name: Clements, D. L.
name: Golding, J.
name: Heesen, V.
name: Irwin, J.
name: Leech, J.
name: Matthews, H. E.
name: Muhle, S.
name: Mortier, A. M. J.
name: Petitpas, G.
name: Sanchez-Gallego, J. R.
name: Sinukoff, E.
name: Shorten, K.
name: Tan, B. K.
name: Tilanus, R. P. J.
name: Usero, A.
name: Vaccari, M.
name: Wiegert, T.
name: Zhu, M.
name: Alexander, D. M.
name: Alexander, P.
name: Azimlu, M.
name: Barmby, P.
name: Borys, C.
name: Brar, R.
name: Bridge, C.
name: Brinks, E.
name: Brooks, S.
name: Coppin, K.
name: Cote, S.
name: Cote, P.
name: Courteau, S.
name: Davies, J.
name: Eales, S.
name: Fich, M.
name: Hudson, M.
name: Hughes, D. H.
name: Ivison, R. J.
name: Knapen, J. H.
name: Page, M.
name: Parkin, T. J.
name: Pope, A.
name: Rigopoulou, D.
name: Rosolowsky, E.
name: Seaquist, E. R.
name: Spekkens, K.
name: Tanvir, N.
name: van der Hulst, J. M.
name: van der Werf, P.
name: Vlahakis, C.
name: Webb, T. M.
name: Weferling, B.
name: White, G. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey (NGLS) comprises an HI-selected sample of 155 galaxies spanning all morphological types with distances less than 25 Mpc. We describe the scientific goals of the survey, the sample selection, and the observing strategy. We also present an atlas and analysis of the CO J=3-2 maps for the 47 galaxies in the NGLS which are also part of the Spitzer Infrared Nearby Galaxies Survey. We find a wide range of molecular gas mass fractions in the galaxies in this sample and explore the correlation of the far-infrared luminosity, which traces star formation, with the CO luminosity, which traces the molecular gas mass. By comparing the NGLS data with merging galaxies at low and high redshift which have also been observed in the CO J=3-2 line, we show that the correlation of far-infrared and CO luminosity shows a significant trend with luminosity. This trend is consistent with a molecular gas depletion time which is more than an order of magnitude faster in the merger galaxies than in nearby normal galaxies. We also find a strong correlation of the L(FIR)/L(CO3-2) ratio with the atomic to molecular gas mass ratio. This correlation suggests that some of the far-infrared emission originates from dust associated with atomic gas and that its contribution is particularly important in galaxies where most of the gas is in the atomic phase.
description: 37 pages, 107 figures; accepted for publication in MNRAS. Data and additional information are available at http://www.physics.mcmaster.ca/~wilson/www_xfer/NGLS/