Stellar explosions powered by the Blandford-Znajek mechanism

Stellar explosions powered by the Blandford-Znajek mechanism
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由布兰德福德-兹纳耶克机制驱动的恒星爆炸

DOI:
10.1111/j.1745-3933.2008.00427.x
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发表时间:
2008
期刊:
Letters
影响因子:
--
通讯作者:
Barkov M
Barkov M
中科院分区:
--
文献类型:
--
作者:
Barkov M

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In this Letter, we briefly describe the first results of our numerical study on the possibility of magnetic origin of relativistic jets of long-duration gamma-ray bursters within the collapsar scenario. We track the collapse of massive rotating stars on to a rotating central black hole using axisymmetric general relativistic magnetohydrodynamic code that utilizes a realistic equation of state of stellar matter, and takes into account the cooling associated with emission of neutrinos and the energy losses due to dissociation of nuclei. The neutrino heating is not included. We describe the solution for one particular model where the progenitor star has magnetic fieldB= 3 × 1010G. The solution exhibits strong explosion driven by the Poynting-dominated jets whose power exceeds 2 × 1051erg s−1. The jets originate mainly from the black hole, and they are powered via the Blandford–Znajek mechanism.
塌陷星黑洞的形成机制:早期演化阶段
DOI: --
发表时间: --
期刊: Progress of Theoretical Physics (Accepted)
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