The Low-Luminosity Afterglow Gamma-ray Bursts

Authors : Hüsne DERELİ, Michel BOER, Bruce GENDRE, Lorenzo AMATI, Simone DICHIARA

Pages : 269-272

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Publication Date : 2020-12-11

Article Type : Conference Paper

Abstract :The Low Luminosity Afterglow insert ignore into journalissuearticles values(LLA); gamma-ray bursts insert ignore into journalissuearticles values(GRBs); are characterized by their very intrinsically faint X-ray afterglows. They represent 12% of the long insert ignore into journalissuearticles values(of duration more than 2s); GRBs insert ignore into journalissuearticles values(lGRBs); with measured redshift. They are on average closer than the other IGRBs and their distribution is not affected by the gas and dust from our and host galaxies, and we detect jet breaks in some cases. We explore the environments of the LLA GRBs in the light of the closure relations, both in the X-ray and in the optical bands. We have also studied the host galaxy environment. We show 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 have computed the volume density of LLA GRBs. Finally, using all these information we purpose an assumption that may be applicable about the origin of GRBs.
Keywords : X rays, gamma ray bursts, compact objects