Bulletin de la Société Royale des Sciences de Liège

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Kuntal Misra, Dimple & Ankur Ghosh

Insights into the Properties of GRBs with TeV Emission

(Volume 93 - Année 2024 — No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation)
DOI: 10.25518/0037-9565.11857
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Open Access

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Abstract

This study investigates the environments and characteristics of Gamma-Ray Bursts (GRBs) exhibiting very high energy (VHE) emission. Recent detections of VHE emission, up to TeV energies, challenge synchrotron-only emission models and particle acceleration concepts in GRBs. Until now, only a handful of GRBs have been detected in the VHE range. We compare the number densities of the circumburst medium of VHE-detected GRBs to check if the environment impacts the VHE emission. This shows that these GRBs have environments similar to the larger population of GRBs. We employ machine learning algorithms to create two-dimensional embeddings of GRB prompt emission light curves from the Swift-BAT catalog. VHE-detected GRBs are located across the map, indicating that VHE emission does not favour any particular cluster. These findings indicate that VHE-detected GRBs do not show any peculiar characteristics other than the observational detection of VHE photons. Future detections will increase the sample size required for a rigorous understanding of the origin of VHE emission in GRBs.

Keywords : GRBs, VHE emission, emission mechanisms, environments, Machine Learning

Para citar este artículo

Kuntal Misra, Dimple & Ankur Ghosh, «Insights into the Properties of GRBs with TeV Emission», 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, 727-737 URL : http://popups.ulg.be/0037-9565/index.php?id=11857.

Acerca de: Kuntal Misra

Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital-263002, India. Corresponding author: kuntal@aries.res.in

Acerca de:  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.

Acerca de: Ankur Ghosh

Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital-263002, India and School of Studies in Physics and Astrophysics, Pandit Ravishankar Shukla University, Raipur 492010, Chattisgarh, India