A Study of GRBs with Low-luminosity Afterglows

Journal
Date Issued
2017
Author(s)
Dereli, H.
•
Boër, M.
•
Gendre, B.
•
•
Dichiara, S.
•
Orange, N. B.
DOI
Abstract
We present a sample composed of the 41 faintest X-ray afterglows of the population of long gamma-ray bursts (lGRBs) with known redshift. We study their intrinsic properties (spectral index, decay index, distance, luminosity, isotropic radiated energy, and peak energy) and their luminosity distribution functions to assess whether they belong to the same population as the brighter afterglow events. We find that these events belong to a population of nearby ones, different from the general population of lGRBs. In addition, these events are faint during their prompt phase, and include the few possible outliers of the Amati relation.
Volume
850
Issue
2
Start page
117
Uri
Url
Issn Identifier
0004-637X
Ads BibCode
2017ApJ...850..117D
Rights
open.access
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