Dainotti 2010 部分暴的L_X--T_a关系

主要内容:
找了一部分有平台和拐折的暴，统计拐折时间和此时的光度。（居然没把这个关系式亮出来。）

精彩摘抄:

文章信息:

· Find Similar Abstracts (with default settings below)

· arXiv e-print (arXiv:1009.1663)

· References in the Article

· Also-Read Articles (Reads History)

·

· Translate This Page

Title:		Discovery of a tight correlation for gamma ray burst afterglows with `canonical' light curves
Authors:		Dainotti, M. G.; Willingale, R.; Capozziello, S.; Cardone, V. F.; Ostrowski, M.
Publication:		eprint arXiv:1009.1663
Publication Date:		09/2010
Origin:		ARXIV
Keywords:		Astrophysics - High Energy Astrophysical Phenomena
Comment:		15 pages, 5 figures accepted to ApJL
Bibliographic Code:		2010arXiv1009.1663D

Abstract

Gamma Ray Bursts (GRB) observed up to redshifts $z>8$ are fascinating objects to study due to their still unexplained relativistic outburst mechanisms and a possible use to test cosmological models. Our analysis of 77 GRB afterglows with known redshifts revealed a physical subsample of long GRBs with canonical {\it plateau breaking to power-law} light curves with a significant {\it luminosity $L^*_X$ - break time $T^*_a$} correlation in the GRB rest frame. This subsample forms approximately the {\it upper envelope} of the studied distribution. We have also found a similar relation for a small sample of GRB afterglows that belong to the intermediate class (IC) between the short and the long ones. It proves that within the full sample of afterglows there exist physical subclasses revealed here by tight correlations of their afterglow properties. The afterglows with regular (`canonical') light curves obey not only a mentioned tight physical scaling, but -- for a given $T^*_a$ -- the more regular progenitor explosions lead to preferentially brighter afterglows.

---

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)