KERR PARAMETERS FOR STELLAR MASS BLACK HOLES AND THEIR CONSEQUENCES FOR GAMMA-RAY BURSTS AND HYPERNOVAE

被引：14

作者：

Mendez, Enrique Moreno ^{[1
,2
]}

Brown, Gerald E. ^{[1
]}

Lee, Chang-Hwan ^{[3
]}

Walter, Frederick M. ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[2] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany

[3] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

来源：

ASTROPHYSICAL JOURNAL | 2011年 / 727卷 / 01期

关键词：

binaries: close; black hole physics; gamma-ray burst: general; supernovae: general; X-rays: binaries; CORE-COLLAPSE SUPERNOVAE; HYPERCRITICAL ACCRETION; BEAMING FACTOR; GRO J1655-40; BINARIES; SPIN; GRS-1915+105; STARS; EXPLOSIONS; ABUNDANCES;

D O I：

10.1088/0004-637X/727/1/29

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent measurements of the Kerr parameters a(star) for two black hole binaries in our Galaxy, GRO J1655-40 and 4U 1543-47, of a(star) = 0.65-0.75 and a(star) = 0.75-0.85, respectively, fit the predictions of Lee et al. of a(star) congruent to 0.8. They predicted a(star) > 0.5 for 80% of the soft X-ray transient (SXT) sources. The maximum available energy in the Blandford-Znajek formalism for a(star) > 0.5 gives E > 3 x 10(53) erg, orders of magnitude larger than the energy needed for the gamma-ray burst (GRB) and hypernova explosion. We interpret the SXTs to be relics of GRBs and hypernovae. We find that most galactic SXTs were subluminous given that they could use only a small part of the available rotational energy.

引用

页数：9

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