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Spectral and Timing Analysis of the Prompt Emission of Gamma Ray Bursts
Rupal Basak
A Thesis Submitted to the Tata Institute of Fundamental Research, Mumbai for the degree of Doctor of Philosophy in Physics (supervisor: Prof. A. R. Rao)
Discovery of Smoothly Evolving Blackbodies in the Early Afterglow of GRB 090618 : Evidence for a Spine-Sheath Jet?
Rupal Basak, A. R. Rao
GRB 090618 is a bright GRB with multiple pulses. It shows evidence of thermal emission in the initial pulses as well as in the early afterglow phase. As high resolution spectral da…
Time-resolved Spectral Study Of Fermi GRBs Having Single Pulses
Rupal Basak, A. R. Rao
We analyze gamma-ray bursts (GRBs) detected by \textit{Fermi}/Gamma-Ray Burst Monitor (GBM) and having single pulse. We fit the light curves with a model having exponential rise an…
GRB as luminosity indicator
Rupal Basak, A. R. Rao
Gamma Ray Bursts (GRBs) are found at much higher redshifts (z>6) than Supernova Ia (z~1), and hence, they can be used to probe very primitive universe. However, radiation mechanism…