5 papers
Investigating peculiar prompt emission properties of the multi-Peaked GRB 250129A
Ankur Ghosh, Tamador K. M. Aldowma, Soebur Razzaque
We present a high-energy spectral analysis of GRB 250129A, which was triggered by the Swift-BAT. The burst exhibits a complex, multi-peaked temporal structure characterized by two…
Photometric and late-time spectropolarimetric observations of GRB 250129A afterglow
A. Ghosh, S. Razzaque, J. Barnard +15
Gamma-Ray Burst (GRB) afterglows arise from the interaction of relativistic ejecta with the circumburst medium and are observed across the electromagnetic spectrum. Afterglow polar…
Dissecting the radiation mechanism of short GRB~160821B through multi-wavelength modelling
Ankur Ghosh, Monica Barnard, Jagdish C. Joshi +1
GRB~160821B is the only short GRB detected to date at very high energy (VHE, GeV). At a redshift , it was detected by MAGIC telescopes approximately four hou…
Modelling multiwavelength afterglows of the VHE-GRB population
Monica Barnard, Ankur Ghosh, Jagdish C. Joshi +1
The recent detection of very high energy (VHE, 100 GeV) -ray emission from gamma-ray bursts (GRBs) has provided new insights into afterglow physics. Understanding the…
Deciphering the Physical Origin of GRB 240825A: A Long GRB Lacking a Bright Supernova
Rahul Gupta, Judith L. Racusin, R. Sanchez-Ramirez +52
We present a comprehensive multiwavelength analysis of GRB 240825A, a bright gamma-ray burst (GRB) detected by Fermi and Swift, with a prompt duration ( ~ 4 sec in 50-3…