activity
20012025
most citedAn extremely luminous panchromatic outburst from the nucleus of a distant galaxy

363 citations · 2.2k across the 43 of their papers we have counts for

collaborators

46 papers

astro-ph.HE2025

Deciphering the Physical Origin of GRB 240825A: A Long GRB Lacking a Bright Supernova

Rahul Gupta, Judith L. Racusin, R. Sanchez-Ramirez +54

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…

astro-ph.HE2023

Revealing characteristics of dark GRB 150309A: dust extinguished or high-z?

A. J. Castro-Tirado, Rahul Gupta, S. B. Pandey +28

Dark GRBs constitute a significant fraction of the GRB population. In this paper, we present the multiwavelength analysis of an intense two-episodic GRB 150309A observed early on t…

astro-ph.HE2021★ 21 cited

GRB 140102A: Insight into Prompt Spectral Evolution and Early Optical Afterglow Emission

Rahul Gupta, S. R. Oates, S. B. Pandey +38

We present and perform a detailed analysis of multi-wavelength observations of \thisgrb, an optical bright GRB with an observed reverse shock (RS) signature. Observations of this G…

astro-ph.HE2020★ 44 cited

10.4m GTC observations of the nearby VHE-detected GRB 190829A/SN 2019oyw

Y. -D. Hu, A. J. Castro-Tirado, A. Kumar +15

Aims. GRB 190829A (z = 0.0785), detected by Fermi and Swift with two emission episodes separated by a quiescent gap of ~40 s, was also observed by the H.E.S.S. telescopes at Very-H…

astro-ph.HE2019★ 9 cited

Multiwavelength observations of GRB 140629A. A long burst with an achromatic jet break in the optical and X-ray afterglow

Y. -D. Hu, S. R. Oates, V. M. Lipunov +31

We investigate the long GRB140629A through multiwavelength observations, which cover optical, infrared and X-rays between 40s and 3yr after the burst, to derive the properties of t…

astro-ph.HE2019★ 137 cited

The afterglow and kilonova of the short GRB 160821B

E. Troja, A. J. Castro-Tirado, J. Becerra Gonzalez +22

GRB 160821B is a short duration gamma-ray burst (GRB) detected and localized by the Neil Gehrels Swift Observatory in the outskirts of a spiral galaxy at z=0.1613, at a projected p…