India's first robotic eye for time-domain astrophysics: the GROWTH-India telescope
H Kumar, V Bhalerao, GC Anupama… - The Astronomical …, 2022 - iopscience.iop.org
We present the design and performance of the GROWTH-India telescope, a 0.7 m robotic
telescope dedicated to time-domain astronomy. The telescope is equipped with a 4k back …
telescope dedicated to time-domain astronomy. The telescope is equipped with a 4k back …
A Detailed Time-resolved and Energy-resolved Spectro-polarimetric Study of Bright Gamma-Ray Bursts Detected by AstroSat CZTI in Its First Year of Operation
The radiation mechanism underlying the prompt emission remains unresolved and can be
resolved using a systematic and uniform time-resolved spectro-polarimetric study. In this …
resolved using a systematic and uniform time-resolved spectro-polarimetric study. In this …
GRB 221009A: An ordinary nearby GRB with extraordinary observational properties
L Lan, H Gao, A Li, S Xiao, S Ai, ZK Peng… - The Astrophysical …, 2023 - iopscience.iop.org
The gamma-ray burst GRB 221009A, known as the" brightest of all time," is the closest
energetic burst detected so far, with an energy of E γ, iso∼ 10 55 erg. This study aims to …
energetic burst detected so far, with an energy of E γ, iso∼ 10 55 erg. This study aims to …
The long-active afterglow of GRB 210204A: detection of the most delayed flares in a gamma-ray burst
We present results from extensive broadband follow-up of GRB 210204A over the period of
30 d. We detect optical flares in the afterglow at 7.6× 105 s and 1.1× 106 s after the burst: the …
30 d. We detect optical flares in the afterglow at 7.6× 105 s and 1.1× 106 s after the burst: the …
Early photometric and spectroscopic observations of the extraordinarily bright INTEGRAL-detected GRB 221009A
R Sánchez-Ramírez, RG Lang, A Pozanenko… - Astronomy & …, 2024 - aanda.org
Context. GRB 221009A, initially detected as an X-ray transient by Swift, was later revealed to
have triggered the Fermi satellite about an hour earlier, marking it as a post-peak …
have triggered the Fermi satellite about an hour earlier, marking it as a post-peak …
Tale of GRB 171010A/SN 2017htp and GRB 171205A/SN 2017iuk: Magnetar origin?
We present late-time optical follow-up observations of GRB 171010A/SN 2017htp (z= 0.33)
and low-luminosity GRB 171205A/SN 2017iuk (z= 0.037) acquired using the 4K× 4K CCD …
and low-luminosity GRB 171205A/SN 2017iuk (z= 0.037) acquired using the 4K× 4K CCD …
Prompt Emission and Early Optical Afterglow of Very-high-energy Detected GRB 201015A and GRB 201216C: Onset of the External Forward Shock
We present a detailed prompt emission and early optical afterglow analysis of the two very-
high-energy (VHE) detected bursts GRB 201015A and GRB 201216C, and their comparison …
high-energy (VHE) detected bursts GRB 201015A and GRB 201216C, and their comparison …
Unified Theory of Negative and Positive Spectral Lags in the Gamma-Ray Burst Prompt Phase due to Shear Comptonization from a Structured Jet
Positive spectral lags are commonly observed in gamma-ray burst (GRB) prompt phase
where soft photons lag behind hard ones in their spectral studies. In contrast to this pattern …
where soft photons lag behind hard ones in their spectral studies. In contrast to this pattern …
Multiwavelength study of the luminous GRB 210619B observed with Fermi and ASIM
MD Caballero-García, R Gupta… - Monthly Notices of …, 2023 - academic.oup.com
We report on detailed multiwavelength observations and analysis of the very bright and long
GRB 210619B, detected by the Atmosphere-Space Interactions Monitor installed on the …
GRB 210619B, detected by the Atmosphere-Space Interactions Monitor installed on the …
Photometric studies on the host galaxies of gamma-ray bursts using 3.6 m Devasthal optical telescope
In this paper, we present multi-band photometric observations and analysis of the host
galaxies for a sample of five interesting gamma-ray bursts (GRBs) observed using the 3.6 m …
galaxies for a sample of five interesting gamma-ray bursts (GRBs) observed using the 3.6 m …