Sakmoto 2008 估计E_p的值

主要内容:
log E_p = 3.3-0.8\Gamma
其中\Gamma是光子谱指数

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Title:		Epeak estimator for Gamma-Ray Bursts Observed by the Swift Burst Alert Telescope
Authors:		Sakamoto, T.; Sato, G.; Barbier, L.; Barthelmy, S. D.; Cummings, J. R.; Fenimore, E. E.; Gehrels, N.; Hullinger, D.; Krimm, H. A.; Lamb, D. Q.; Markwardt, C. B.; Palmer, D. M.; Parsons, A. M.; Stamatikos, M.; Tueller, J.; Ukwatta, T. N.
Publication:		eprint arXiv:0811.3401
Publication Date:		11/2008
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		27 pages, 31 figures, accepted for publication in ApJ
Bibliographic Code:		2008arXiv0811.3401S

Abstract

We report a correlation based on a spectral simulation study of the prompt emission spectra of gamma-ray bursts (GRBs) detected by the Swift Burst Alert Telescope (BAT). The correlation is between the Epeak energy, which is the peak energy in the \nu F_\nu spectrum, and the photon index (\Gamma) derived from a simple power-law model. The Epeak - \Gamma relation, assuming the typical smoothly broken power-law spectrum of GRBs, is \log Epeak = 3.258 - 0.829\Gamma (1.3 < \Gamma <> Bibtex entry for this abstract Preferred format for this abstract (see Preferences)