Results 31 to 40 of about 34,160 (259)
A Tolman-like Compact Model with Conformal Geometry
Entropy, 2021 In this investigation, we study a model of a charged anisotropic compact star by assuming a relationship between the metric functions arising from a conformal symmetry.
Didier Kileba Matondo, Sunil D. Maharaj
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Ultra-relativistic journeys through compact astrophysical objects
Physics Letters BIt has recently been proved that, for constant density stars, there is a critical value Λ*=1 for the dimensionless density parameter Λ ≡ 4πR2ρmax of the star above which the asymptotically measured travel time Ts along a semi-circular trajectory that ...
Shahar Hod
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On categorical notions of compact objects
Applied Categorical Structures, 1996 The concept of compactness has found various categorical generalizations. In this paper the author studies two such -- seemingly unrelated -- concepts: Borel-Lebesgue-compactness, based on the concept of a closure operator, an Áhn-Wiegandt-compactness, based on the bahaviour of certain morphisms with respect to projective limits.
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Inspiraling compact objects with generic deformations
Physical Review D, 2022 Self-gravitating bodies can have an arbitrarily complex shape, which implies a much richer multipolar structure than that of a black hole in General Relativity. With this motivation, we study the corrections to the dynamics of a binary system due to generic, nonaxisymmetric mass quadrupole moments to leading post-Newtonian (PN) order.
Loutrel, Nicholas +3 more
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COMPACT PARTITIONS ON LARGE DIMENSION TOPOLOGICAL GRAPHS
Известия Томского политехнического университета: Промышленная кибернетика, 2023 Relevance. Distributed systems containing hundreds and thousands of objects are usually built in the form of hierarchical structures. In these structures, lower-level objects are combined into subsets for connection to the corresponding centers.
Alexander V. Pogrebnoy +1 more
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Wolf–Rayet–compact object binaries as progenitors of binary compact objects
Astronomy & AstrophysicsBinaries with a Wolf–Rayet star and a compact object (WR–COs), either a black hole (BH) or a neutron star (NS), have been proposed as possible progenitors for the binary compact object mergers (BCOs) observed with gravitational wave (GW) detectors. In this work, we use the open source population synthesis code SEVN to investigate the role of WR–COs as ...
Korb E. +4 more
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Compact Massive Object in Galaxies
, 2016 arXiv admin note: substantial text overlap with arXiv:1603 ...
Tosta e Melo, Capuzzo Dolcetta
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Pair Creation in Hot Electrosphere of Compact Astrophysical Objects
The Astrophysical JournalThe mechanism of pair creation in the electrosphere of compact astrophysical objects such as quark stars or neutron stars is revisited, paying attention to evaporation of electrons and acceleration of electrons and positrons, which were previously not ...
Mikalai Prakapenia, Gregory Vereshchagin
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The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
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The Astrophysical JournalWe present our analysis of MAXI J1813−095 during its hard state “stalled” outburst in 2018. This self-consistent analysis has been carried out using the Neutron Star Interior Composition Explorer, Swift, Chandra, and NuSTAR throughout seven observations ...
Santiago Ubach +7 more
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