Investigating High Redshift Short GRBs: Signatures of Collapsars?
Dimple,
Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital- 263002, India and Department of Physics, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur-273009, India. Corresponding author: dimplepanchal96@gmail.com
Kuntal Misra,
Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital- 263002, India
Lallan Yadav,
Department of Physics, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur-273009, India
Abstract
The conventional classification of Gamma-Ray Bursts (GRBs) as short or long bursts based on their duration is widely accepted as arising from different progenitor sources identified as compact object mergers and collapsars, respectively. However, recent observational shreds of evidence challenged this view, with signatures of collapsars in short GRBs and mergers in long GRBs. We conduct a comparative analysis of the characteristics of short and long GRBs, both at low and high redshifts, taking into account the locations and environments of their host galaxies. Our analysis suggests that some short GRBs at higher redshifts exhibit features similar to long GRBs, indicating a possible collapsar origin. Further investigation, utilizing multi-messenger observations, could provide a resolution to this issue.
Keywords : GRB, Classification, Progenitors, Collapsars, Mergers
To cite this article
Dimple, Kuntal Misra & Lallan Yadav, «Investigating High Redshift Short GRBs: Signatures of Collapsars?», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 670-682 URL : https://popups.uliege.be/0037-9565/index.php?id=11833.
