2013A&A...552A..59B

Query : 2013A&A...552A..59B

2013A&A...552A..59B - Astronomy and Astrophysics, volume 552A59-59 (2013/4-1)

Parameters of rotating neutron stars with and without hyperons.

BEJGER M.

Abstract (from CDS):

The discovery of a 2M☉ neutron star provided a robust constraint for the theory of exotic dense matter, bringing into question the existence of strange baryons in the interiors of neutron stars. Although many theories fail to reproduce this observational result, several equations of state containing hyperons are consistent with it. We study global properties of stars using equations of state containing hyperons, and compare them to those without hyperons to find similarities, differences, and limits that can be compared with the astrophysical observations. Rotating, axisymmetric, and stationary stellar configurations in general relativity are obtained, and their global parameters are studied. Approximate formulae describing the behavior of the maximum and minimum stellar mass, compactness, surface redshifts, and moments of inertia as functions of spin frequency are provided. We also study the thin disk accretion and compare the spin-up evolution of stars with different moments of inertia.

Abstract Copyright: ∼

Journal keyword(s): stars: neutron - equation of state - stars: rotation - dense matter

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR J1748-2446ad Psr 17 48 04.9 -24 46 04           ~ 141 1

Query : 2013A&A...552A..59B

Basic data :
PSR J1748-2446ad -- Pulsar
Other object types: otypes_help 		Psr (PSR,[LMD90])
ICRS coord. (ep=J2000) : 		17 48 04.9 -24 46 04 [ ] E 1996AJ....112.1487H
FK4 coord. (ep=B1950 eq=1950) : 		17 45 00.4 -24 45 05 [ ]
Gal coord. (ep=J2000) : 		003.8492 +01.6925 [ ]
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Identifiers (2) :
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PSR J1748-2446ad [LMD90] Terzan 5 Psr ad

References (141 between 1850 and 2026) (Total 141)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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