Results 21 to 30 of about 477,311 (280)
Measuring Mass and Radius of the Maximum-mass Nonrotating Neutron Star
The Astrophysical Journal, 2023 The mass ( M _TOV ) and radius ( R _TOV ) of the maximum-mass nonrotating neutron star (NS) play a crucial role in constraining the elusive equation of state of cold dense matter and in predicting the fate of remnants from binary neutron star (BNS ...
Shao-Peng Tang +4 more
doaj +1 more source
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
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
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
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
Constraining the Cosmological Density of Compact Objects with the Long-Term Variability of Quasars [PDF]
, 2002 By comparing the results from numerical microlensing simulations to the observed long-term variability of quasars, strong upper limits on the cosmological density of compact objects in the 0.0001-1 solar mass range may in principle be imposed. Here, this
Alam +34 more
core +2 more sources
Quantifying Rapid Variability in Accreting Compact Objects [PDF]
, 1997 I discuss some practical aspects of the analysis of millisecond time variability X-ray data obtained from accreting neutron stars and black holes. First I give an account of the statistical methods that are at present commonly applied in this field ...
A Vikhlinin +11 more
core +2 more sources
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