Results 21 to 30 of about 474,897 (288)
Thermodynamics of magnetized binary compact objects [PDF]
, 2010 Binary systems of compact objects with electromagnetic field are modeled by helically symmetric Einstein-Maxwell spacetimes with charged and magnetized perfect fluids. Previously derived thermodynamic laws for helically-symmetric perfect-fluid spacetimes
Gourgoulhon, Eric +2 more
core +2 more sources
Conformal motion for higher-dimensional compact objects
European Physical Journal C: Particles and Fields, 2023 In this work, we present a new framework for five-dimensional spherical symmetry anisotropic stars that admits conformal motion. The behaviour of model characteristic pressure, stress, density profile and surface tension is investigated with the ...
A. Zahra +2 more
doaj +1 more source
Nondetection of CHIME/Fast Radio Burst Sources with the Arecibo Observatory
The Astrophysical Journal, 2023 In this work, we present follow-up observations of two known repeating fast radio bursts (FRBs) and seven nonrepeating FRBs with complex morphology discovered with the CHIME/FRB project.
Deborah C. Good +9 more
doaj +1 more source
New VLBA Identifications of Compact Symmetric Objects [PDF]
, 1999 The class of radio sources known as Compact Symmetric Objects (CSOs) is of particular interest in the study of the evolution of radio galaxies. CSOs are thought to be young (probably ~10^4 years), and a very high fraction of them exhibit HI absorption ...
A.B. Peck +9 more
core +2 more sources
Physics of accretion flows around compact objects [PDF]
, 2006 Several physical and astrophysical problems related to accretion onto black holes and neutron stars are shortly reviewed. I discuss the observed differences between these two types of compact objects in quiescent Soft X-ray Transients.
Abramowicz +81 more
core +3 more sources
Scaling Correlations Among Central Massive Objects and Their Host Galaxies [PDF]
, 2016 The central regions of galaxies show the presence of super massive black holes and/or very dense stellar clusters. Both such objects seem to follow similar host-galaxy correlations, suggesting that they are members of the same family of Compact Massive ...
Capuzzo-Dolcetta, Roberto +1 more
core +2 more sources
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
openaire +2 more sources
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
doaj +1 more source
Bounds on the mass and abundance of dark compact objects and black holes in dwarf spheroidal galaxy halos [PDF]
, 2007 We establish new dynamical constraints on the mass and abundance of compact objects in the halo of dwarf spheroidal galaxies. In order to preserve kinematically cold the second peak of the Ursa Minor dwarf spheroidal (UMi dSph) against gravitational ...
F. J. Sánchez-Salcedo +7 more
core +3 more sources
Compact Objects and Accretion Disks [PDF]
, 2001 Recent developments in the spectropolarimetric study of compact objects, specifically black holes (stellar and massive) and neutron stars are reviewed. The lectures are organized around five topics: disks, jets, outflows, neutron stars and black holes.
Blandford, Roger +5 more
openaire +3 more sources