TY - JOUR
T1 - Properties of low-luminosity afterglow GRBs
AU - Dereli, Hüsne
AU - Boër, Michel
AU - Gendre, Bruce
AU - Amati, Lorenzo
AU - Dichiara, Simone
PY - 2014
Y1 - 2014
N2 - The Low Luminosity Afterglow (LLA) gamma-ray bursts (GRBs) are characterized by their very intrinsically faint X-ray afterglows. They represent 12% of all long (of duration more than 2 s) GRBs (lGRBs) with a measured redshift. They are on average closer than normal lGRBs and their distribution is not affected by the gas and dust from the Milky Way and host galaxies. Additionally, the angle of observation is aligned with the jet's direction, has proven by founding the jet breaks in some cases. In this work, we studied the host galaxy properties (mass, metallicity, star formation rate) of LLA GRBs. These properties were compared to those of normal lGRBs and we found that they are similar. We also showed that the prompt properties of LLA GRBs are somewhat different from that of other lGRBs, as shown by their position in the Amati relation. We computed the volume density of LLA GRBs and found that they have higher rate density compare to normal lGRBs. Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
AB - The Low Luminosity Afterglow (LLA) gamma-ray bursts (GRBs) are characterized by their very intrinsically faint X-ray afterglows. They represent 12% of all long (of duration more than 2 s) GRBs (lGRBs) with a measured redshift. They are on average closer than normal lGRBs and their distribution is not affected by the gas and dust from the Milky Way and host galaxies. Additionally, the angle of observation is aligned with the jet's direction, has proven by founding the jet breaks in some cases. In this work, we studied the host galaxy properties (mass, metallicity, star formation rate) of LLA GRBs. These properties were compared to those of normal lGRBs and we found that they are similar. We also showed that the prompt properties of LLA GRBs are somewhat different from that of other lGRBs, as shown by their position in the Amati relation. We computed the volume density of LLA GRBs and found that they have higher rate density compare to normal lGRBs. Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
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M3 - Conference article
AN - SCOPUS:85017422036
SN - 1824-8039
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 072
T2 - 10th Conference on Swift, SWIFT 2014
Y2 - 2 December 2014 through 5 December 2014
ER -