主要内容:
大质量恒星，高红移，bz机制，产生峰值在几十keV的暴。
（那么不确定的理论，说得这么精确的结果，感觉不靠谱）
精彩摘抄:
文章信息:
- · arXiv e-print (arXiv:1003.4379)
- · References in the Article
- · Also-Read Articles (Reads History)
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| Title: |
| Hard X-ray Bursts from Collapse of the Super Massive Stars |
| Authors: |
| Barkov, Maxim V. |
| Publication: |
| eprint arXiv:1003.4379 |
| Publication Date: |
| 03/2010 |
| Origin: |
| ARXIV |
| Keywords: |
| Astrophysics - High Energy Astrophysical Phenomena |
| Comment: |
| 4 pages, 2 figures. proceedings of workshop "Many faces of GRB phenomena - optics vs high energy", SAO Russia, October 12-16, 2009, |
| Bibliographic Code: |
| 2010arXiv1003.4379B |
Abstract
The very first stars in the Universe can be very massive, up to $10^6M_\odot$. They would leave behind massive black holes that could act as seeds for growing super massive black holes of active galactic nuclei. Given the anticipated fast rotation such stars would end their live as super massive collapsars and drive powerful magnetically-dominated jets. In this paper we investigate the possibility of observing the bursts of high-energy emission similar to the Long Gamma Ray Bursts associated with normal collapsars. We show that during the collapse of supercollapsars, the Blandford-Znajek mechanism can produce jets as powerful as few$\times10^{51}$erg/s and release up to $10^{56}$erg of the black hole rotational energy. Due to the higher intrinsic time scale and higher redshift the initial bright phase of the burst can last for about $10^5$ seconds whereas the central engine would remain active for about 10 days. Due to the high redshift the burst spectrum is expected to be soft, with the spectral energy distribution peaking at around 60keV. The peak total flux density is relatively low, few$\times 10^{-7}erg\, cm^{-2} s^{-1}$, but not prohibitive. The such events should be rear 0.03 year$^{-1}$, the observations needs long term program and could be done in future.
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