Results 21 to 30 of about 34,160 (259)

Formation of double compact objects [PDF]

open access: yesPhysics Reports, 2007
55 pages, 16 figures, to appear in the Bethe Centennial Volume of Physics Reports, eds. G. E. Brown, V. Kalogera, E.P.J.
Kalogera, V.   +4 more
openaire   +2 more sources

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

open access: yesThe 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

Nondetection of CHIME/Fast Radio Burst Sources with the Arecibo Observatory

open access: yesThe 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

Compact Objects and Accretion Disks [PDF]

open access: yes, 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

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

open access: yesThe 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

open access: yesThe 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 in conformal nonlinear electrodynamics

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
In this paper we consider a special case of vacuum nonlinear electrodynamics with a stress–energy tensor conformal to the Maxwell theory. Distinctive features of this model are the absence of a dimensional parameter for the nonlinearity description and a
I. P. Denisova   +2 more
doaj   +1 more source

Conformal motion for higher-dimensional compact objects

open access: yesEuropean 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

Jets from Compact Objects [PDF]

open access: yesSymposium - International Astronomical Union, 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 disk-wind models, and jet collimation in magnetic acceleration models.
openaire   +2 more sources

LOCALLY COMPACT OBJECTS IN EXACT CATEGORIES [PDF]

open access: yesInternational Journal of Mathematics, 2011
We identify two categories of locally compact objects on an exact category [Formula: see text]. They correspond to the well-known constructions of the Beilinson category [Formula: see text] and the Kato category [Formula: see text]. We study their mutual relations and compare the two constructions.
openaire   +3 more sources

Home - About - Disclaimer - Privacy