publication . Preprint . Article . 2006

The Early X-ray Afterglows of Optically Bright and Dark Gamma-Ray Bursts

Yi-Qing Lin;
Open Access English
  • Published: 07 Apr 2006
Abstract
A systematical study on the early X-ray afterglows of both optically bright and dark gamma-ray bursts (B-GRBs and D-GRBs) observed by Swift has been presented. Our sample includes 25 GRBs. Among them 13 are B-GRBs and 12 are D-GRBs. Our results show that the distributions of the X-ray afterglow fluxes ($F_{X}$), the gamma-ray fluxes ($S_{\gamma}$), and the ratio ($R_{\gamma, X}$) for both the D-GRBs and B-GRBs are similar. The differences of these distributions for the two kinds of GRBs should be statistical fluctuation. These results indicate that the progenitors of the two kinds of GRBs are the same population. Their total energy explosions are comparable. The...
Subjects
arXiv: Astrophysics::High Energy Astrophysical PhenomenaAstrophysics::Instrumentation and Methods for Astrophysics
free text keywords: Astrophysics, Space and Planetary Science, Astronomy and Astrophysics
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