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My primary research focus is on Gamma-Ray Bursts (GRBs), the most energetic and enigmatic phenomena in the Universe. I utilize multi-wavelength data from various ground and space-based telescopes, including the NASA Fermi and Swift missions. My research covers a wide spectrum of topics including:
Prompt Emission: Investigating the initial burst of gamma rays and the mechanisms that produce this extraordinary release of energy.
Spectro-Polarimetric Analysis: Analyzing the spectrum and polarization of GRB emissions to gain insights into the physical processes and structures of the GRB jets. This work also aims to address fundamental and unresolved questions in high-energy physics, such as the radiation mechanisms and jet composition of bright GRBs.
Afterglow Studies: Understanding the fading emission following the initial burst, which can span across X-ray, optical, and radio wavelengths.
Progenitor Models: Exploring the origins of GRBs, including the collapse of massive stars and mergers of compact objects.
GRB Environments: Studying the environments in which GRBs occur and their implications for the bursts' characteristics and their role in the Universe.
In addition to my research, I have joined the NASA Swift and Fermi collaborations, actively contributing to both missions. My main role in responding to alerts for new GRB triggers and supporting these missions as a Burst Advocate (BA) for Swift and Fermi-LAT, as well as a BAT Burst Scientist (BBS) for Swift-BAT. The involvement in responding to new triggers not only supports ongoing missions but also provides critical data that benefits the broader scientific community. The information gathered from these alerts aids in the study of GRBs and their connections to other cosmic phenomena, such as gravitational waves.
Some Key highlights!
Some Key highlights!
Left: A combined forward and reverse shock model is used for the interpretation of the optical emission from GRB 140102A. Right: Derived physical parameters of GRB 140102A and other thin shell cases (Gupta et al. 2021).
Multiwavelength observations data ofZTF21aaeyldq along with the best fit afterglow modelling results obtained using afterglowpy.
Multiwavelength observations data ofZTF21aaeyldq along with the best fit afterglow modelling results obtained using afterglowpy.
A schematic diagram of a top-hat jet of a GRB for the on-axis view is presented, one of the possible scenarios for ZTF21aaeyldq (Gupta et al. 2022).
A kilonova in the long GRB 211211A (Troja et al. (including RG) 2022, Nature).
A kilonova in the long GRB 211211A (Troja et al. (including RG) 2022, Nature).
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