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。
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文章信息:
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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.Bibtex entry for this abstract Preferred format for this abstract (see Preferences) |
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