215 citations · 737 across the 11 of their papers we have counts for
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A Turbulent Model of Gamma-Ray Burst Variability
Ramesh Narayan, Pawan Kumar
A popular paradigm to explain the rapid temporal variability observed in gamma-ray burst (GRB) lightcurves is the internal shock model. We propose an alternative model in which the…
Properties of Gamma-Ray Burst Progenitor Stars
Pawan Kumar, Ramesh Narayan, Jarrett L. Johnson
We determine some basic properties of stars that produce spectacular gamma-ray bursts at the end of their life. We assume that accretion of the outer portion of the stellar core by…
Mass Fall-back and Accretion in the Central Engine of Gamma-Ray Bursts
Pawan Kumar, Ramesh Narayan, Jarrett L. Johnson
We calculate the rate of in-fall of stellar matter on an accretion disk during the collapse of a rapidly rotating massive star, and estimate the luminosity of the relativistic jet…
A general scheme for modeling gamma-ray burst prompt emission
Pawan Kumar, Erin McMahon, UT Austin
We describe a general method for modeling gamma-ray burst prompt emission. We find that for the burst to be produced via the synchrotron process unphysical conditions are required…