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The Distribution of Burst Energy and Shock Parameters for Gamma-ray Bursts
Pawan Kumar
We calculate the statistical distribution of observed afterglow flux, in some fixed observed frequency band, and at some fixed observer time after the explosion () in two…
Energetics and Luminosity Function of Gamma-ray Bursts
Pawan Kumar, Tsvi Piran
Gamma-ray bursts are believed to be some catastrophic event in which material is ejected at a relativistic velocity, and internal collisions within this ejecta produce the observed…
Gamma-ray Burst Energetics
Pawan Kumar
We estimate the fraction of the total energy in a Gamma-Ray Burst (GRB) that is radiated in photons during the main burst. Random internal collisions among different shells limit t…
Some Observational Consequences of GRB Shock Models
Pawan Kumar, Tsvi Piran
In the internal shock scenario for GRBs we expect some fraction of the energy of the burst to be carried by slow moving shells that were ejected at late times. These slow shells co…
Angular momentum redistribution by waves in the Sun
Pawan Kumar, Suzanne Talon, Jean-Paul Zahn
We calculate the angular momentum transport by gravito-inertial-Alfvén waves and show that, so long as prograde and retrograde gravity waves are excited to roughly the same amplitu…
The structure of the central disk of NGC 1068: a clumpy disk model
Pawan Kumar
NGC 1068 is one of the best studied Seyfert II galaxies, for which the blackhole mass has been determined from the Doppler velocities of water maser. We show that the standard -…