Results 11 to 20 of about 475,850 (295)

Repeating fast radio bursts from collapses of the crust of a strange star

The Innovation, 2021
Summary: Strange stars (SSs) are compact objects made of deconfined quarks. It is hard to distinguish SSs from neutron stars as a thin crust composed of normal hadronic matter may exist and obscure the whole surface of the SS.
Jinjun Geng, Bing Li, Yongfeng Huang
doaj   +1 more source

Jets from compact objects [PDF]

, 2000
Some topics in the theory of jets are reviewed. These include jet precession, unconfined jets, the origin of knots, the internal shock model as a unifying theme from protostellar jets to Gamma-ray bursts, relations between the Blandford-Znajek and MHD ...
Spruit, H. C.
core   +2 more sources

Simple Convective Accretion Flows (SCAFs): Explaining the ≈ −1 Density Scaling of Hot Accretion Flows around Compact Accretors

The Astrophysical Journal, 2023
Recent simulations find that hot gas accretion onto compact accretors is often highly turbulent and diskless, and shows a power-law density profile with slope α _ρ ≈ −1.
Wenrui Xu
doaj   +1 more source

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, Bo Gao, Yin-Jie Li, Yi-Zhong Fan, Da-Ming Wei   +4 more
doaj   +1 more source

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, Markakis, Charalampos, Uryu, Koji   +2 more
core   +2 more sources

Compact objects and the swampland

Journal of High Energy Physics, 2019
Recently, two simple criteria were proposed to assess if vacua emerging from an effective scalar field theory are part of the string “landscape” or “swampland”.
Carlos A. R. Herdeiro, Eugen Radu, Kunihito Uzawa   +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, Pragya Chawla, Emmanuel Fonseca, Victoria Kaspi, B. W. Meyers, Ziggy Pleunis, Ketan R. Sand, Paul Scholz, I. H. Stairs, Shriharsh P. Tendulkar   +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, G.B. Taylor, Owsianik, Peck, Peck, Peck, Readhead, Readhead, Taylor, Taylor   +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, Abramowicz, Aharonian, Bahcall, Barceló, Bardeen, Bejger, Berti, Bildsten, Blandford, Blandford, Bondi, Buchdahl, Campana, Casares, Cattoen, Chapline, Chapline, Chapline, Chen, Chen, Davis, Deloye, Dubus, Dubus, Dyson, Fender, Fender, Gallo, Gammie, Goldston, Haensel, Haensel, Hartle, Hopkins, Hughes, Hughes, Ichimaru, Jean-Pierre Lasota, Jonker, Kesden, King, King, Krasnopolsky, Lasota, Lasota, Lasota, Lasota, Li, Mazur, Menou, Menou, Menou, Mirabel, Moderski, Moderski, Narayan, Narayan, Narayan, Narayan, Narayan, Narayan, Natarajan, Nelemans, Oppenheimer, Paczyński, Paczyński, Papaloizou, Rothman, Ruffini, Rutledge, Schunck, Schwarz, Schwarzschild, Schödel, Shafee, Sikora, Torres, Volonteri, Wilson, Yuan, Yungelson   +81 more
core   +3 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, S. A. Mardan, Muhammad Bilal Riaz   +2 more
doaj   +1 more source