cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stability, convergence to the steady state and elastic limit for the Boltzmann equation for diffusively excited granular media
Creators: name: Mischler, Stéphane
name: Mouhot, Clément
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 76P05

description: We consider a space-homogeneous gas of {\it inelastic hard spheres}, with a {\it diffusive term} representing a random background forcing (in the framework of so-called {\em constant normal restitution coefficients} $α\in [0,1]$ for the inelasticity). In the physical regime of a small inelasticity (that is $α\in [α_*,1)$ for some constructive $α_* \in [0,1)$) we prove uniqueness of the stationary solution for given values of the restitution coefficient $α\in [α_*,1)$, the mass and the momentum, and we give various results on the linear stability and nonlinear stability of this stationary solution.
Weak-coupling expansions for the attractive Holstein and Hubbard models
Creators: name: Freericks, J. K.
name: Scalapino, D. J.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Weak-coupling expansions (conserving approximations) are carried out for the attractive Holstein and Hubbard models (on an infinite-dimensional hypercubic lattice) that include all bandstructure and vertex correction effects. Quantum fluctuations are found to renormalize transition temperatures by factors of order unity, but may be incorporated into the superconducting channel of Migdal-Eliashberg theory by renormalizing the phonon frequency and the interaction strength.
description: 10 pages, (five figures available from the author by request) typeset with ReVTeX, preprint NSF-ITP-93-100
Gauge Invariant Formulations of Lineal Gravity
Creators: name: Cangemi, Daniel
name: Jackiw, Roman
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that the currently studied ``string-inspired'' model for gravity on a line can be formulated as a gauge invariant theory based on the Poincaré group with central extension -- a formulation that complements and simplifies H.~Verlinde's construction based on the unextended Poincaré group.
description: 11 pp
Dynamical Threshold Enhancement and Resummation in Drell-Yan Production
Creators: name: Becher, Thomas
name: Neubert, Matthias
name: Xu, Gang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Partonic cross sections for the production of massive objects in hadronic collisions receive large corrections when the invariant mass of the initial-state partons is just above the production threshold. Since typically the center-of-mass energy of the hadronic collision is much higher than the mass of the heavy objects, it is not obvious that these contributions translate into large corrections to the hadronic cross section. Using a recent approach to threshold resummation based on effective field theory, we quantify to which extent the fall-off of the parton densities at high x leads to a dynamical enhancement of the partonic threshold region. With the example of Drell-Yan production, we study the emergence of an effective physical scale characterizing the soft emissions in the process. We derive compact analytical expressions for the resummed Drell-Yan cross section and rapidity distribution directly in momentum space. They are free of Landau-pole singularities and are trivially matched onto fixed-order perturbative calculations. Evaluating the resummed cross sections at NNNLL order and matching onto NNLO fixed-order calculations, we perform a detailed numerical analysis of the cross section and rapidity distribution in proton-proton collisions.
description: 43 pages; references added; small numerical changes at NNLO due to improved fixed-order code
Gamma Ray Lines from the Orion Complex
Creators: name: Ramaty, Reuven
name: Kozlovsky, Benzion
name: Lingenfelter, Richard E.
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the 4.44 and 6.13 MeV line emission observed with COMPTEL from Orion is consistent with gamma ray spectra consisting of a mixture of narrow and broad lines or spectra containing only broad lines. We employed several accelerated particle compositions and showed that the current COMPTEL data in the 3--7 MeV region alone cannot distinguish between the various possibilities. However, the COMPTEL upper limits in the 1--3 MeV band favor a composition similar to that of the winds of Wolf-Rayet stars of spectral type WC. The power dissipated by the accelerated particles at Orion is about 4 $\times$ 10$^{38}$ erg s$^{-1}$. These particles are not expected to produce significant amounts of $^{26}$Al.
description: 12 pages, uuencoded compressed postscript with 4 figures ApJL in press 1995
R code for species richness calculations
Creators: name: Perfecto, Ivette
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310302
subject: Community ecology (excl. invasive species ecology)

description: The R code estimates species richness and produces CHAO estimators for different distance bins from the central Azteca Nest.Here we analyze a system of diffuse competition in an ant community in a tropical coffee landscape in southern Mexico. The community is constrained by space in that the dominant competitor (Azteca seriaceasur) has a limited range of influence within which it excludes most other species, but outside that range, the other species may all persist. We use a simple dynamic model in which variable A, the dominant competitor, competes strongly with variable S, the collection of all other species in the system, the latter acting as a single strong competitor in the context of diffuse competition. Two qualitatively distinct outcomes are expected depending on the strength of competition: 1) a simple monotonic increase in species richness as the distance from the Azteca nest increases or 2) a range of distance from the nest in which there is bi-stability (either A dominates or S dominates), bookended by critical transitions. Studying five specific nests in wet and dry seasons over a two-year period, we find evidence for the bi-stability situation. Implications for metacommunity structure are discussed.
title: Ð¡Ð¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ Ñ Ð²Ð¾ÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ñ Ð¾Ð·ÑÐ¹ÑÑÐ²Ð° Ð³Ð¾ÑÐ½Ð¾-Ð¾Ð±Ð¾Ð³Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð°ÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Tailings facilities of the mining and processing plant
Creators: name: ÐÑÑÐ¼ÐµÐ½ÐºÐ¾, ÐÐ¾Ð½ÑÑÐ°Ð½ÑÐ¸Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÐÐ¾ÑÐ½Ð°Ñ Ð¿ÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½Ð¾ÑÑÑ
ÐÐ±Ð¾Ð³Ð°ÑÐ¸ÑÐµÐ»ÑÐ½ÑÐµ ÑÐ°Ð±ÑÐ¸ÐºÐ¸
ÐÑÑÐ½ÑÐ¾Ð²ÑÐµ Ð½Ð°ÑÐ¾ÑÑ
Ð¿ÑÐ»ÑÐ¿Ð¾Ð½Ð°ÑÐ¾ÑÐ½Ð°Ñ ÑÑÐ°Ð½ÑÐ¸Ñ
Ð¿ÑÐ»ÑÐ¿Ð¾Ð²Ð¾Ð´Ñ
ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ñ
Ð³Ð¸Ð´ÑÐ¾ÑÐ¸ÐºÐ»Ð¾Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
pulp pumping station
slurry pipelines
reconstruction
hydrocycloning

description: Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð¸Ðµ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐµÐ¼Ñ Ð´Ð¸Ð¿Ð»Ð¾Ð¼Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ° Ð¾Ð±ÑÑÐ»Ð¾Ð²Ð»ÐµÐ½Ð¾ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ÑÑÑÑ Ð¿ÑÐ¾Ð´Ð¾Ð»Ð¶ÐµÐ½Ð¸Ñ ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¸ ÑÐ²Ð¾ÑÑÐ¾Ð²Ð¾Ð³Ð¾ ÑÐ¾Ð·ÑÐ¹ÑÑÐ²Ð° Ð³Ð¾ÑÐ½Ð¾-Ð¾Ð±Ð¾Ð³Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð°ÑÐ°.Â  ÐÐ°Ð´Ð°ÑÐ¸, Ð²ÑÐ¾Ð´ÑÑÐ¸Ðµ Ð² ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÑÑ ÑÐ°ÑÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÐ½Ð°Ð»Ð¸Ð· ÑÐµÐºÑÑÐµÐ³Ð¾ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ñ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹ ÑÐ²Ð¾ÑÑÐ¾Ð²Ð¾Ð³Ð¾ ÑÐ¾Ð·ÑÐ¹ÑÑÐ²Ð° Ð³Ð¾ÑÐ½Ð¾-Ð¾Ð±Ð¾Ð³Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð°ÑÐ°; 2. ÐÐ½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐµÐ¹ ÑÑÐµÐ¼Ñ Ð³Ð¸Ð´ÑÐ¾ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ° ÑÐ²Ð¾ÑÑÐ¾Ð²Ð¾Ð¹ Ð¿ÑÐ»ÑÐ¿Ñ; 3. ÐÐ½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐµÐ¹ ÑÑÐµÐ¼Ñ ÑÐºÐ»Ð°Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð¾ÑÑÐ¾Ð²Ð¾Ð¹ Ð¿ÑÐ»ÑÐ¿Ñ; 4. ÐÑÐ¾ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹ Ð¿Ð¾ ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ñ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹ ÑÐ²Ð¾ÑÑÐ¾Ð²Ð¾Ð³Ð¾ ÑÐ¾Ð·ÑÐ¹ÑÑÐ²Ð°. Ð¢ÐµÐºÑÑ ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´Ð°ÐµÑÑÑ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐ¼ Ð¸ Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¸Ð¼ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð¼, Ð¿Ð¾Ð´ÑÐ²ÐµÑÐ¶Ð´Ð°ÑÑÐ¸Ð¼ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð½ÑÐµ ÑÐ°ÑÑÐµÑÑ Ð¸ Ð²ÑÐ²Ð¾Ð´Ñ.
description: The consideration of this topic of the graduation project is due to the need to continue the operation of the tailings of the mining and processing plant. Tasks included in the theoretical part of the study: 1. Analysis of the current state of the tailings facilities of the mining and processing plant; 2. Analysis of the existing tail pulp hydraulic transport scheme; 3. Analysis of the existing tailings slurry storage scheme; 4. Elaboration of technical solutions for the reconstruction and construction of tailings facilities. The text is accompanied by qua.
Many-Body Expansion Dynamics of a Bose-Fermi Mixture Confined in an Optical Lattice
Creators: name: Siegl, P.
name: Mistakidis, S. I.
name: Schmelcher, P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We unravel the correlated non-equilibrium dynamics of a mass balanced Bose-Fermi mixture in a one-dimensional optical lattice upon quenching an imposed harmonic trap from strong to weak confinement. Regarding the system's ground state, the competition between the inter and intraspecies interaction strength gives rise to the immiscible and miscible phases characterized by negligible and complete overlap of the constituting atomic clouds respectively. The resulting dynamical response depends strongly on the initial phase and consists of an expansion of each cloud and an interwell tunneling dynamics. For varying quench amplitude and referring to a fixed phase a multitude of response regimes is unveiled, being richer within the immiscible phase, which are described by distinct expansion strengths and tunneling channels.
description: 13 pages, 7 figures
Cavity-waveguide interplay in lossy resonators and its role in optimal single-photon sources
Creators: name: Denning, Emil V.
name: Iles-Smith, Jake
name: Osterkryger, Andreas Dyhl
name: Gregersen, Niels
name: Mork, Jesper
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Interfacing solid-state emitters with photonic structures is a key strategy for developing highly efficient photonic quantum technologies. Such structures are often organised into two distinct categories: nanocavities and waveguides. However, any realistic nanocavity structure simultaneously has characteristics of both a cavity and waveguide, which is particularly pronounced when the cavity is constructed using low-reflectivity mirrors in a waveguide structure with good transverse light confinement. In this regime, standard cavity quantum optics theory breaks down, as the waveguide character of the underlying dielectric is only weakly suppressed by the cavity mirrors. By consistently treating the photonic density of states of the structure, we provide a microscopic description of an emitter including the effects of phonon scattering over the full transition range from waveguide to cavity. This generalised theory lets us identify an optimal regime of operation for single-photon sources in optical nanostructures, where cavity and waveguide effects are concurrently exploited.
Tuning of the CDW in the Halogen-Bridged Transition-Metal Linear-Chain Compounds
Creators: name: Alouani, M.
name: Wilkins, J. W.
name: Albers, R. C.
name: Wills, J. M.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Local-density-approximation calculations are used to show that the metal-metal distance along the chains controls the charge-density wave (CDW) in halogen-bridged transition-metal linear-chain (MX) compounds. The strength of the CDW can be understood in terms of a two band Su-Schrieffer-Heeger model if a hard-core ion-ion repulsion potential is also added. We predict a second-order phase transition from an insulating to a semi-metallic ground state and explain trends in dimerization, bond-length ratios, band gaps, and Raman breathing modes in terms of the metal-metal distance. Three "ps" figures are included at the end of the file.
description: 13 pages
Extended Bose-Hubbard Model with dipolar and contact interactions
Creators: name: Biedroń, Krzysztof
name: Łącki, Mateusz
name: Zakrzewski, Jakub
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the phase diagram of the one-dimensional boson gas trapped inside an optical lattice with contact and dipolar interaction taking into account next-nearest terms for both tunneling and interaction. Using the density matrix renormalization group, we calculate how the locations of phase transitions change with increasing dipolar interaction strength for average density $ρ= 1$. Furthermore, we show an emergence of pair-correlated phases for a large dipolar interaction strength and $ρ\geq 2$, including a supersolid phase with an incommensurate density wave ordering manifesting the corresponding spontaneous breaking of the translational symmetry.
description: Accepted in Phys. Rev. B., 10 pages, 12 figures
Electron correlations and pre-collision in the re-collision picture of high harmonic generation
Creators: name: Mašín, Zdeněk
name: Harvey, Alex G.
name: Spanner, Michael
name: Patchkovskii, Serguei
name: Ivanov, Misha
name: Smirnova, Olga
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We discuss the seminal three-step model and the recollision picture in the context of high harmonic generation in molecules. In particular, we stress the importance of multi-electron correlation during the first and the third of the three steps of the process: (1) the strong field ionization and (3) the recombination. We point out how accurate account for multi-electron correlations during the third, recombination, step allows one to gauge the importance of pre-collision: the term coined by J. H. Eberly to describe unusual pathways during the first, ionization, step.
description: 28 pages, 11 figures
Revisiting the D-meson hadroproduction in general-mass variable flavour number scheme
Creators: name: Helenius, Ilkka
name: Paukkunen, Hannu
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We introduce a novel realization of the open heavy-flavour hadroproduction in general-mass variable flavour number scheme at next-to-leading order in perturbative QCD. The principal novelty with respect to the earlier works is in the treatment of small-transverse-momentum limit, which has been a particularly challenging kinematic region in the past. We show that by a suitable choice of scheme, it is possible to obtain a well-behaved description of the open heavy-flavour hadroproduction cross sections from zero up to asymptotically high transverse momentum. We contrast our calculation with the available D$^0$-meson data as measured by the LHCb and ALICE collaborations at the LHC, finding a very good agreement within the theoretical and experimental uncertainties. We also compare our framework with other theoretical approaches.
description: The published version
Enhancement of steady-state bosonic squeezing and entanglement in a dissipative optomechanical system
Creators: name: Liao, Chang-Geng
name: Xie, Hong
name: Shang, Xiao
name: Chen, Zhi-Hua
name: Lin, Xiu-Min
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We systematically study the influence of amplitude modulation on the steady-state bosonic squeezing and entanglement in a dissipative three-mode optomechanical system, where a vibrational mode of the membrane is coupled to the left and right cavity modes via the radiation pressure. Numerical simulation results show that the steady-state bosonic squeezing and entanglement can be significantly enhanced by periodically modulated external laser driving either or both ends of the cavity. Remarkably, the fact that as long as one periodically modulated external laser driving either end of the cavities is sufficient to enhance the squeezing and entanglement is convenient for actual experiment, whose cost is that required modulation period number for achieving system stability is more. In addition, we numerically confirm the analytical prediction for optimal modulation frequency and discuss the corresponding physical mechanism.
description: 25 pages, 8 figures, accepted for publication in Optics Express
Apports des méthodes de géophysique appliquée A la caractérisation d'un site karstique dans le Causse Moyen Atlasique (Causse d'El Hajeb/Maroc), Impact sur la protection des ressources en eau
Creators: name: Muzirafuti, Anselme
Publisher: name: Zenodo
Year: 2019
Subjects: subject: cavités karstiques (dolines)
subject: Karst des Causse Moyen Atlasiques marocains
subject: dolomies et les calcaires du Lias
subject: tomographie électrique
subject: potentiel spontané
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Le Karst des Causse Moyen Atlasiques marocains constituent le Château d’eau douce utilisée dans différentes activités. Son aquifère se trouve dans les dolomies et les calcaires du Lias. La qualité de cette ressource naturelle est affectée par les produits chimiques et les produits d’érosion qui s’infiltrent dans les cavités karstiques (dolines) développées dans cette région. Notre travail vise à la caractérisation de ces cavités karstiques afin d’assurer leur protection et de limiter l’introduction des polluants résultant d’activités anthropiques
Efficient expression of recombinant human telomerase inhibitor 1 (hPinX1) in Pichia pastoris
Creators: name: Yagmur Unver
name: Yildiz, Melike
name: Deryanur Kilic
name: Taskin, Mesut
name: Abdulhadi Firat
name: Askin, Hakan
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: PinX1 encoded by a remarkable tumor suppressor gene and located in human chromosome 8p23 is known as telomerase inhibitor. In recent years, this protein has been of interest as clinically tumor suppressor. Pichia pastoris expression system is preferred to produce heterologous proteins and is suitable for industrial and research purposes. In the present study, human PinX1 gene (hPinX1) was cloned in E. coli One Shot TOP10 cells and overexpressed in P. pastoris strain X-33 intracellularly, using a strong AOX (alcohol oxidase) promoter. The recombinant cells were grown in shaking flask. Induction time, methanol concentration and initial pH were optimized for obtaining high levels of hPinX1 protein production. Recombinant protein production was confirmed by Western blot analysis and the relative expression levels of rhPinX1 were quantified. According to Western blot analysis, molecular mass of produced hPinX1 was determined as 47.5 kDa. At the end of optimization studies, the best fermentation conditions were determined as induction time 48 h, methanol concentration 3% and initial culture pH 5.0. This process would be an applicable way for obtaining recombinant hPinX1 using P. pastoris expression system. This is the first report on recombinant production of hPinX1 in P. pastoris.
Lorentz-violating contributions to the nuclear Schiff moment and nuclear EDM
Creators: name: Araujo, Jonas B.
name: Casana, Rodolfo
name: Ferreira, Manoel M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the context of an atom endowed with nuclear electric dipole moment (EDM), we consider the effects on the Schiff moment of $CPT$-even Lorentz-violating (LV) terms that modify the Coulomb potential. First, we study the modifications on the Schiff moment when the nucleus interacts with the electronic cloud by means of a Coulomb potential altered only by the $P$-even LV components. Next, by supposing the existence of an additional intrinsic LV EDM generated by other LV sources, we assess the corrections to the Schiff moment when the interaction nucleus-electrons runs mediated by a Coulomb potential modified by both the $P$-odd and $P$-even LV components. We then use known estimates and EDM measurements to discuss upper bounds on the new Schiff moment components and the possibility of an intrisic nuclear EDM component ascribed to LV effects.
description: 8 pages, revtex style, Phys. Rev. D 97, 055032 (2018)
Dirty blackholes: Thermodynamics and horizon structure
Creators: name: Visser, Matt
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Considerable interest has recently been expressed in (static spherically symmetric) blackholes in interaction with various classical matter fields (such as electromagnetic fields, dilaton fields, axion fields, Abelian Higgs fields, non--Abelian gauge fields, {\sl etc}). A common feature of these investigations that has not previously been remarked upon is that the Hawking temperature of such systems appears to be suppressed relative to that of a vacuum blackhole of equal horizon area. That is: $k T_H \leq \hbar/(4πr_H) \equiv \hbar/\sqrt{4πA_H}$. This paper will argue that this suppression is generic. Specifically, it will be shown that \[ k T_H = {\hbar\over4πr_H} \; e^{-ϕ(r_H)} \; \left( 1 - 8πG \; ρ_H \; r_H^2 \right). \] Here $ϕ(r_H)$ is an integral quantity, depending on the distribution of matter, that is guaranteed to be positive if the Weak Energy Condition is satisfied. Several examples of this behaviour will be discussed. Generalizations of this behaviour to non--symmetric non--static blackholes are conjectured.
description: [minor revisions] 22 pages, RevTeX
The Ultraviolet Behavior Of Quantum Gravity
Creators: name: Anselmi, Damiano
name: Piva, Marco
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A theory of quantum gravity has been recently proposed by means of a novel quantization prescription, which is able to turn the poles of the free propagators that are due to the higher derivatives into fakeons. The classical Lagrangian contains the cosmological term, the Hilbert term, $\sqrt{-g}R_{μν}R^{μν}$ and $\sqrt{-g}R^{2}$. In this paper, we compute the one-loop renormalization of the theory and the absorptive part of the graviton self energy. The results illustrate the mechanism that makes renormalizability compatible with unitarity. The fakeons disentangle the real part of the self energy from the imaginary part. The former obeys a renormalizable power counting, while the latter obeys the nonrenormalizable power counting of the low energy expansion and is consistent with unitarity in the limit of vanishing cosmological constant. The value of the absorptive part is related to the central charge $c$ of the matter fields coupled to gravity.
description: 20 pages, 1 figure; v2: minor changes, JHEP
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Creators: name: Chicareli, Gerson
Publisher: name: figshare
Year: 2018
Subjects: subject: 50201 Aboriginal and Torres Strait Islander Environmental Knowledge
subject: FOS: Earth and related environmental sciences
subject: 40101 Atmospheric Aerosols
subject: 40103 Atmospheric Radiation
subject: 40102 Atmospheric Dynamics
subject: 40199 Atmospheric Sciences not elsewhere classified
subject: Atmospheric Sciences
subject: 40501 Biological Oceanography
subject: 40301 Basin Analysis
subject: 40502 Chemical Oceanography
subject: 50301 Carbon Sequestration Science
subject: FOS: Agriculture, forestry and fisheries
subject: 40104 Climate Change Processes
subject: 40105 Climatology (excl. Climate Change Processes)
subject: Climate Science
subject: 40106 Cloud Physics
subject: 49999 Earth Sciences not elsewhere classified
subject: 50202 Conservation and Biodiversity
subject: FOS: Biological sciences
subject: 50101 Ecological Impacts of Climate Change
subject: 50199 Ecological Applications not elsewhere classified
subject: Ecology
subject: 50102 Ecosystem Function
subject: 40401 Electrical and Electromagnetic Methods in Geophysics
subject: 50203 Environmental Education and Extension
subject: 50205 Environmental Management
subject: 50204 Environmental Impact Assessment
subject: 50206 Environmental Monitoring
subject: 50207 Environmental Rehabilitation (excl. Bioremediation)
subject: 50299 Environmental Science and Management not elsewhere classified
subject: Environmental Science
subject: 59999 Environmental Sciences not elsewhere classified
subject: 40302 Extraterrestrial Geology
subject: 40201 Exploration Geochemistry
subject: 40303 Geochronology
subject: 40299 Geochemistry not elsewhere classified
subject: Geology
subject: 40402 Geodynamics
subject: 40601 Geomorphology and Regolith and Landscape Evolution
subject: 40399 Geology not elsewhere classified
subject: 40403 Geophysical Fluid Dynamics
subject: Geophysics
subject: 40499 Geophysics not elsewhere classified
subject: 40602 Glaciology
subject: 40404 Geothermics and Radiometrics
subject: 40405 Gravimetrics
subject: 40603 Hydrogeology
subject: Hydrology
subject: 40304 Igneous and Metamorphic Petrology
subject: 40202 Inorganic Geochemistry
subject: 40203 Isotope Geochemistry
subject: 50103 Invasive Species Ecology
subject: 50104 Landscape Ecology
subject: 50208 Maori Environmental Knowledge
subject: 50302 Land Capability and Soil Degradation
subject: Limnology
subject: 40406 Magnetism and Palaeomagnetism
subject: 40305 Marine Geoscience
subject: 40604 Natural Hazards

description: The big idea change world nwslttrs KSE The search king engine solomon king key=666
Decoherence in the quantum Ising model with transverse dissipative interaction in the strong coupling regime
Creators: name: Weisbrich, Hannes
name: Saussol, C.
name: Belzig, Wolfgang
name: Rastelli, Gianluca
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the decoherence dynamics of a quantum Ising lattice of finite size with a transverse dissipative interaction, namely the coupling with the bath is assumed perpendicular to the direction of the spins interaction and parallel to the external transverse magnetic field. In the limit of small transverse field, the eigenstates and spectrum are obtained by a strong coupling expansion, from which we derive the Lindblad equation in the Markovian limit. At temperature lower than the energy gap and for weak dissipation, the decoherence dynamics can be restricted to take only the two degenerate ground states and the first excited subspace into account. The latter is formed by pairs of topological excitations (domain walls or kinks), which are quantum delocalized along the chain due to the small magnetic field. We find that some of these excited states form a relaxation-free subspace, i.e. they do not decay to the ground states. We also discuss the decoherence dynamics for an initial state formed by a quantum superposition of the two degenerate ground states corresponding to the orthogonal classical, ferromagnetic states.
До питання ідентифікації причинно-детермінаційної субструктури корупціогенних факторів в умовах сучасного публічно-правового апарату України
Creators: name: Podoliak, Elvira
Publisher: name: figshare
Year: 2018
Subjects: subject: Law
subject: FOS: Law

description: Подоляк-Богачек Е. Б. (2016). До питання ідентифікації причинно-детермінаційної субструктури корупціогенних факторів в умовах сучасного публічно-правового апарату України. Науковий вісник Львівського державного університету внутрішніх справ. Серія юридична, 1, 383–391.
Note Illustrative della Carta geologica d'Italia alla scala 1:50.000, F. 411 S. Teresa di Gallura, Servizio Geologico d'Italia - ISPRA
Creators: name: Oggiano, G.
name: Cherchi, G.P.
name: Aversano, A.
name: Di Pisa, A.
name: Ulzega, A.
name: Orrù, P.E.
name: Pintus, C.
name: Puliga, G.
Publisher: name: INFN Open Access Repository
Year: 2012
Subjects: carta geologica, S. Teresa di Gallura, Regione Sardegna, CARG, stratigrafia, tettonica, sottosuolo, geological map, stratigraphy, tectonics, subsurface

description: Note illustrative redatte per il Foglio geologico n. 411 S. Teresa di Gallura della Carta Geologica d'Italia alla scala 1:50.000. 176 pp.
RETURN To an Order of the Legislative Assembly for copies of all letters, papers, documents whatsoever relating to the "steps that have been taken against the sureties of the Canadian Pacific Railway Company for failure to fulfill the agreement for extension of the Railway to Coal Harbour and English Bay," with the names of Counsel retained in the case for the Government.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Yang-Mills theory over surfaces and the Atiyah-Segal theorem
Creators: name: Ramras, Daniel A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 55N15, 58E15, 58D27

description: In this paper we explain how Morse theory for the Yang-Mills functional can be used to prove an analogue, for surface groups, of the Atiyah-Segal theorem. Classically, the Atiyah-Segal theorem relates the representation ring R(Γ) of a compact Lie group $Γ$ to the complex K-theory of the classifying space $BΓ$. For infinite discrete groups, it is necessary to take into account deformations of representations, and with this in mind we replace the representation ring by Carlsson's deformation $K$--theory spectrum $\K (Γ)$ (the homotopy-theoretical analogue of $R(Γ)$). Our main theorem provides an isomorphism in homotopy $\K_*(π_1 Σ)\isom K^{-*}(Σ)$ for all compact, aspherical surfaces $Σ$ and all $*>0$. Combining this result with work of Tyler Lawson, we obtain homotopy theoretical information about the stable moduli space of flat unitary connections over surfaces.
description: 43 pages. Changes in v4: improved results in Section 7, simplified arguments in the Appendix, various minor revisions
title: ADCO, Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402) (11 H 1160), f. 00060
Creators: name: de la Côte-d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2017
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402), Archives départementales de la Côte-d'Or, (11 H 1160). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402), Archives départementales de la Côte-d'Or, (11 H 1160), f. 00060, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Abschlussbericht über die Messungen des Gleichgewichtsfaktors zwischen Radon und seinen kurzlebigen Folgeprodukten in Objekten des VBS. Eine Zusammenstellung und Auswertung von Kurz- und Langzeitmessungen der potenziellen Alphaenergiekonzentration sowie Messungen der Aerosolkonzentration
Creators: name: Grapentin, Raphael
Publisher: name: Institut Nachhaltigkeit und Energie am Bau, Hochschule für Architektur, Bau und Geomatik FHNW
Year: 2024
Subjects: subject: Radon
subject: Gleichgewichtsfaktor
subject: Radonexponierte Arbeitsplätze
subject: 600 - Technik, Medizin, angewandte Wissenschaften

description: In den Jahren von 2020 bis 2023 wurden in diversen ober- und unterirdischen Objekten des VBS Messungen durchgeführt, bei welchen die Radonkonzentration und der Gleichgewichtsfaktor simultan gemessen wurden. Neben 107 Kurzzeitmessungen in 43 Objekten wurden in drei Objekten insgesamt neun Langzeitmessungen durchgeführt. Zusätzlich wurden in einem Objekt drei Messungen der Radonkonzentration, des Gleichgewichtsfaktors und der Aerosolkonzentration durchgeführt. Über alle Kurzzeitmessungen lag der Mittelwert der Radonkonzentration bei 721 Bq/m3 und des Gleichgewichtsfaktors bei 0.29, die Langzeitmessungen zeigten Radonkonzentrationen zwischen 0 bis maximal 14000 Bq/m3 und Gleichgewichtsfaktoren zwischen 0.01 und 0.6. Dabei zeigt sich, dass die mechanische Belüftung eines Objektes einen starken Einfluss auf alle Messgrössen hat. Der Zusammenhang zwischen Aerosolkonzentration und Gleichgewichtsfaktor konnte nicht abschliessend geklärt werden. Aufgrund dieser Messwerte wird empfohlen, dass für eine präzise Dosisabschätzung eine Messung des Gleichgewichtsfaktors durchzuführen ist.
Prüfung von Einstufungsparameter für die mögliche Zulassung von Radon-Personendosimeter
Creators: name: Grapentin, Raphael
Publisher: name: Institut Nachhaltigkeit und Energie am Bau, Hochschule für Architektur, Bau und Geomatik FHNW
Year: 2023
Subjects: subject: Radon-Personendosimetrie
subject: Radon-Messgeräte
subject: 600 - Technik, Medizin, angewandte Wissenschaften

description: In diesem Bericht wurden die Grundlagen der Radon-Personendosimetrie erläutert, es wurden verschiedene Messmethoden vorgestellt, die zur Messung oder Abschätzung der effektiven Dosis durch Radonexposition einer Person an radonexponierten Arbeitsplätzen eingesetzt werden können. Es wurden ebenfalls die aktuellen Anforderungen an Radonmessgeräte und -dosimeter, sowie für Personendosimeter für Photonen-, Beta- und Neutronenstrahlung präsentiert. Basierend auf diesen Anforderungen, weiteren Berechnungen und neusten wissenschaftlichen Erkenntnissen wurde eine Empfehlung für die Einstufungsparameter für die mögliche Zulassung von Radon-Personendosimeter aufgestellt. Dabei wird als Messgrösse die potenzielle Alphaenergieexposition empfohlen. Diese biete eine einfache Berechnung der effektiven Dosis ohne separate Messung des Gleichgewichtsfaktors. Die Anforderungen an Linearität und Reproduzierbarkeit können bei Bedarf verschärft oder gelockert werden. Das viel Diskutierte Thema des zeitlichen Ansprechverhaltens von möglichen Radon-Personendosimeter kann als Anforderung formuliert werden, jedoch ist es einfacher, diese Anforderungen im Zulassungsverfahren einfliessen zu lassen. Dafür können die Messgeräte eine variierenden Radonkonzentration ausgesetzt werden, so wird das zeitliche Ansprechverhalten über die Linearität und Reproduzierbarkeit sichergestellt. Weitere Untersuchungen zu Alterungs- und Fadingeffekten können die Qualität und Messgenauigkeit der Radon-Personendosimetrie weiter steigern. In einem nächsten Schritt müssen verschiedene Messgeräte getestet werden, um zu prüfen, ob es Geräte gibt, die diesen Anforderungen entsprechen. Anschliessend können die gesetzlichen Grundlagen formuliert und umgesetzt werden.
W-STEM Project overview at the International Leadership Summit
Creators: name: Camacho Díaz, A.
name: García-Peñalvo, F. J.
Publisher: name: Zenodo
Year: 2019
Subjects: CBHE, EU, gender, STEM, W-STEM

description: A general overview of the current status of the W-STEM project (funded by European Union. ERASMUS + Capacity-building in Higher Education Call for proposals EAC/A05/2017 - Ref. 598923-EPP-1-2018-1-ES-EPPKA2-CBHE-JP) is presented in the W-STEM International Leadership Summit, 25-26 November 2019 - Universidad Tecnológica de Bolívar, Cartagena de Indias, Colombia
description: W-STEM (Building the future of Latin America: engaging women into STEM) is a project funded under European Union ERASMUS + Capacity-building in Higher Education Programme (598923-EPP-1-2018-1-ES-EPPKA2-CBHE-JP). The European Commission support for the production of this publication does not constitute an endorsement of the contents which reflects the views only of the authors, and the Commission cannot be held responsi­ble for any use which may be made of the information contained therein.
Spectral Classification of Galaxies: An Orthogonal Approach
Creators: name: Connolly, A. J.
name: Szalay, A. S.
name: Bershady, M. A.
name: Kinney, A. L.
name: Calzetti, D.
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Classification of galaxy spectral energy distributions in terms of orthogonal basis functions provides an objective means of estimating the number of significant spectral components that comprise a particular galaxy type. We apply the Karhunen-Loève transform to derive a spectral eigensystem from a sample of ten galaxy spectral energy distributions. These spectra cover a wavelength range of 1200 Å to 1 $μ$m and galaxy morphologies from elliptical to starburst. We find that the distribution of spectral types can be fully described by the first two eigenvectors (or eigenspectra). The derived eigenbasis is affected by the normalization of the original spectral energy distributions. We investigate different normalization and weighting schemes, including weighting to the same bolometric magnitude and weighting by the observed distribution of morphological types. Projecting the spectral energy distributions on to their eigenspectra we find that the coefficients define a simple spectral classification scheme. The galaxy spectral types can then be described in terms of a one parameter family (the angle in the plane of the first two eigenvectors). We find a strong correlation in the mean between our spectral classifications and those determined from published morphological classifications.
description: 24 pages (6 figures), uuencoded gzip compressed Postscript file, submitted to AJ
Survey of the Casas Grandes region, March 10-13, 1958, Dragoon-El Paso-Casas Grandes Trip
Creators: name: The Amerind Foundation, Inc.
Publisher: name: The Amerind Foundation, Inc.
Year: 1958
Subjects: subject: Chihuahua (Mexico : State)
valueUri: https://core.tdar.org/browse/geographic-keyword/49578/chihuahua-mexico-state
subject: Casas Grandes
valueUri: https://core.tdar.org/browse/site-name/279/casas-grandes
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: The purpose of this trip is to study logistic and employment problems involved with the proposed Casas Grandes joint expedition.
Exploring online health information seeking and sharing among older adults: a mini-review about acceptance, potentials, and barriers
Creators: name: Bachofner, Yves
name: Seifert, Alexander
name: Sepahniya, Samin
name: Fabian, Carlo
Publisher: name: Frontiers Research Foundation
Year: 2024
Subjects: subject: eHealth
subject: health literacy
subject: older adults
subject: online health
subject: health seeking
subject: 610 - Medizin und Gesundheit

description: Online health information seeking (OHIS) is understood by health care, health promotion, and disease prevention experts as a resource for healthy aging. It is particularly relevant for older adults since this population can benefit significantly from the accessibility and convenience of online health platforms and health information. Nevertheless, empirical findings regarding the acceptance, potentials, and barriers of OHIS among older adults are limited. This mini-review aims to explore the level of acceptance of OHIS, including passive reading of information and active interactions with peers, among the older population. Furthermore, it examines the potentials and barriers associated with such practices. The findings ultimately emphasize the evolving landscape of internet health information exploration among older adults and the potential advantages and challenges that may arise, especially in the context of active interactions with peers.
Random Exchange Disorder in the Spin-1/2 XXZ Chain
Creators: name: Haas, Stephan
name: Riera, Jose
name: Dagotto, Elbio
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The one-dimensional XXZ model is studied in the presence of disorder in the Heisenberg Exchange Integral. Recent predictions obtained from renormalization group calculations are investigated numerically using a Lanczos algorithm on chains of up to 18 sites. It is found that in the presence of strong X-Y-symmetric random exchange couplings, a ``random singlet'' phase with quasi-long-range order in the spin-spin correlations persists. As the planar anisotropy is varied, the full zero-temperature phase diagram is obtained and compared with predictions of Doty and Fisher [Phys. Rev. B {\bf 45 }, 2167 (1992)].
description: 9 pages + 8 plots appended, RevTex, FSU-SCRI-93-98 and ORNL/CCIP/93/10
LISA sources in Milky Way globular clusters
Creators: name: Kremer, Kyle
name: Chatterjee, Sourav
name: Breivik, Katelyn
name: Rodriguez, Carl L.
name: Larson, Shane L.
name: Rasio, Frederic A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore the formation of double-compact-object binaries in Milky Way (MW) globular clusters (GCs) that may be detectable by the Laser Interferometer Space Antenna (LISA). We use a set of 137 fully evolved GC models that, overall, effectively match the properties of the observed GCs in the MW. We estimate that, in total, the MW GCs contain $\sim21$ sources that will be detectable by LISA. These detectable sources contain all combinations of black hole (BH), neutron star, and white dwarf components. We predict $\sim7$ of these sources will be BH-BH binaries. Furthermore, we show that some of these BH-BH binaries can have signal-to-noise ratios large enough to be detectable at the distance of the Andromeda galaxy or even the Virgo cluster.
description: 7 pages, 4 figures, 2 appendices. As published in Physical Review Letters
World-Sheet Supersymmetry Without Contact Terms
Creators: name: Distler, J.
name: Doyle, M.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Green and Seiberg showed that, in simple treatments of fermionic string theory, it is necessary to introduce contact interactions when vertex operators collide. Otherwise, certain superconformal Ward identities would be violated. In this note, we show how these contact terms arise naturally when proper account is taken of the superconformal geometry involved when punctures collide. More precisely, we show that there is no contact term at all! Rather, corrections arise to the ``na\"ıve" formula when the boundary of moduli space is described correctly.
description: 14pp., 2 figures (included)
Demonstration of a New Transport Regime of Photon in Two-dimensional Photonic Crystal
Creators: name: Zhang, Xiangdong
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A new transport regime of photon in two-dimensional photonic crystal near the Dirac point has been demonstrated by exact numerical simulation. In this regime, the conductance of photon is inversely proportional to the thickness of sample, which can be described by Dirac equation very well. Both of bulk and surface disorders always reduce the transmission, which is in contrast to the previous theoretical prediction that they increase the conductance of electron at the Dirac point of grephene. However, regular tuning of interface structures can cause the improvement of photon conductance. Furthermore, large conductance fluctuations of photon have also been observed, which is similar to the case of electron in graphene.
description: 5 figures
ORGANIZING ROTARY MOVEMENT IMPROVEMENT METHODS.
Creators: name: Nazarov, Anvar
name: Utkirov, Shokir
name: Shamsiddinov, Samariddin
Publisher: name: Zenodo
Year: 2024

description: An increase in the production of cars leads to an increase in the intensity of traffic and an increase in road congestion. It is characteristic that the growth rate of the traffic intensity is much faster than the growth rate of the length of the road network. In this regard, traffic conditions are deteriorating, the number of traffic accidents is increasing, time losses are increasing, and the efficiency of the road is decreasing. In such conditions, the problem of improving the road network is particularly urgent.
Afterglow Imaging and Polarization of Misaligned Structured GRB Jets and Cocoons: Breaking the Degeneracy in GRB 170817A
Creators: name: Gill, Ramandeep
name: Granot, Jonathan
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The X-ray to radio afterglow emission of GRB 170817A/GW 170817 so far scales as $F_ν\proptoν^{-0.6}t^{0.8}$ with observed frequency and time, consistent with a single power-law segment of the synchrotron spectrum from the external shock going into the ambient medium. This requires the effective isotropic equivalent afterglow shock energy in the visible region to increase as $\sim t^{1.7}$. The two main channels for such an energy increase are (i) \emph{radial}: more energy carried by slower material (in the visible region) gradually catches up with the afterglow shock and energizes it, and (ii) \emph{angular}: more energy in relativistic outflow moving at different angles to our line of sight, whose radiation is initially beamed away from us but its beaming cone gradually reaches our line of sight as it decelerates. One cannot distinguish between these explanations (or combinations of them) using only the X-ray to radio $F_ν(t)$. Here we demonstrate that the most promising way to break this degeneracy is through afterglow imaging and polarization, by calculating the predicted evolution of the afterglow image (its size, shape and flux centroid) and linear polarization $Π(t)$ for different angular and/or radial outflow structures that fit $F_ν(t)$. We consider two angular profiles -- a Gaussian and a narrow core with power-law wings in energy per solid angle, as well as a (cocoon motivated) (quasi-) spherical flow with radial velocity profile. For a jet viewed off-axis (and a magnetic field produced in the afterglow shock) $Π(t)$ peaks when the jet's core becomes visible, at $\approx2t_p$ where the lightcurve peaks at $t_p$, and the image can be elongated with aspect ratios$\;\gtrsim2$. A quasi-spherical flow has an almost circular image and a much lower $Π(t)$ (peaking at $\approx t_p$) and flux centroid displacement.
description: 14 pages, 10 figures, Accepted for publication in MNRAS