伽玛暴(Gamma-Ray Burst)笔记。记录有关伽玛暴的新文章,另外也包括看的老文章、自己的想法、以及跟天文相关的一些东西。 Feel free to leave me a message by comments or by email.

星期日, 七月 24, 2011

Xu 2011 有平降的伽马暴的统计关系

主要内容:
Lx, T_a, E_gamma,iso的关系,其中T_a是平降的时标。

精彩摘抄:



文章信息:

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· arXiv e-print (arXiv:1103.3978)
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Title:
A new three-parameter correlation for gamma-ray bursts with a plateau phase in the afterglow
Authors:
Xu, M.Huang, Y. F.
Publication:
eprint arXiv:1103.3978
Publication Date:
03/2011
Origin:
ARXIV
Keywords:
Astrophysics - High Energy Astrophysical Phenomena
Comment:
5 pages, 2 figures, 1 table
Bibliographic Code:
2011arXiv1103.3978X

Abstract

Gamma ray bursts (GRBs) have great advantages for their huge burst energies, luminosities and high redshifts in probing the Universe. A few interesting luminosity correlations of GRBs have been used to test cosmology models. Especially, for a subsample of long GRBs with known redshifts and a plateau phase in the afterglow, a correlation between the end time of the plateau phase (in the GRB rest frame) and the corresponding X-ray luminosity has been found. In this paper, we re-analyze the subsample and found that a significantly tighter correlation exists when we add a third parameter, i.e. the isotropic $\gamma$-ray energy release, into the consideration. Additionally, both long and intermediate duration GRBs are consistent with the same three-parameter correlation equation. It is argued that the new three-parameter correlation is consistent with the hypothesis that the subsample of GRBs with a plateau phase in the afterglow be associated with the birth of rapidly rotating magnetars, and that the plateau be due to the continuous energy-injection from the magnetar. It is suggested that the newly born millisecond magnetars associated with GRBs might provide a good standard candle in the Universe.
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