2009MNRAS.400.1632K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST10:04:28

2009MNRAS.400.1632K - Mon. Not. R. Astron. Soc., 400, 1632-1642 (2009/December-2)

Can stellar mass black holes Be quark stars ?

KOVACS Z., CHENG K.S. and HARKO T.

Abstract (from CDS):

We investigate the possibility that stellar mass black holes, with masses in the range of 3.8- 6M, respectively, could be in fact quark stars in the colour-flavour-locked (CFL) phase. Depending on the value of the gap parameter, rapidly rotating CFL quark stars can achieve much higher masses than standard neutron stars, thus making them possible stellar mass black hole candidates. Moreover, quark stars have a very low luminosity and a completely absorbing surface - the infalling matter on the surface of the quark star is converted into quark matter. A possibility of distinguishing CFL quark stars from stellar mass black holes could be through the study of thin accretion discs around rapidly rotating quark stars and Kerr-type black holes, respectively. Furthermore, we show that the radiation properties of accretion discs around black holes and CFL quark stars are also very similar. However, strange stars exhibit a low-luminosity but high-temperature bremsstrahlung spectrum, which, in combination with the emission properties of the accretion disc, may be the key signature to differentiate massive strange stars from the black hole.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): accretion, accretion discs - black hole physics - dense matter - equation of state - relativity

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* V518 Per HXB 04 21 42.7231318463 +32 54 26.936934166 13.00 13.50 13.2     M4.5V 626 1
2 1A 0620-00 HXB 06 22 44.5420315454 -00 20 44.289428950 10.60 11.40 11.2     K3V-K7V 1052 0
3 [GHJ2008] 3 HXB 16 50 00.980 -49 57 43.60     11.89     K4V 358 0
4 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1751 1
5 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12110 0
6 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3629 3
7 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3997 0
8 V* V404 Cyg HXB 20 24 03.820 +33 52 01.90 14.50 14.20 12.7     K0IV 1125 0

    Equat.    Gal    SGal    Ecl

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2021.04.18-10:04:28

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