1. Luminosity-Entropic scale Index Relation in GRBs
- Author
-
R. J. Lu, J. G. Deng, B. B. Zhang, E. W. Liang, Yong-Feng Huang, Zi-Gao Dai, and Bing Zhang
- Subjects
Physics ,education.field_of_study ,Population ,Astronomy ,Astrophysics ,education ,Gamma-ray burst - Abstract
The entropic scale index δ is independent of artificial selection effects and reflects the genuine of the variation of a GRB lightcurve. With the current redshift‐known GRB sample, we find a tight Liso−δ(1+z) relation and a tentative correlation between Ep and δ for typical GRBs. Two low‐luminosity GRBs, 980425 and 060218, are significant outliers of the Liso−δ(1+z) relation (in 3σ confidence level), likely favoring the idea that they are of a unique GRB population.
- Published
- 2008
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