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Time-Integrated Gamma-Ray Burst Synchrotron Spectra from Blast Wave/Cloud Interactions
James Chiang
We show that the spectral shape of the low energy tails found for the time-integrated spectra of gamma-ray bursts, even in the absence of strong synchrotron cooling, can be signifi…
Variability and Unification of Blazars and Gamma Ray Bursts
Charles D. Dermer, James Chiang
Most models for blazars and gamma-ray bursts involve relativistic plasma outflows powered by accretion processes onto black holes. The blast wave physics developed for cosmological…
Energy-Dependent Gamma-Ray Burst Peak Durations and Blast-Wave Deceleration
James Chiang
Temporal analyses of the prompt gamma-ray and X-ray light curves of gamma-ray bursts reveal a tendency for the burst pulse time scales to increase with decreasing energy. For an en…
Fireballs Loading and the Blast Wave Model of Gamma Ray Bursts
C. D. Dermer, J. Chiang, M. Boettcher
A simple function for the spectral power is proposed to model, with 9 parameters, the spectral and temporal evolution of the observed nonthermal synchrotron…
Synchrotron and SSC Emission and the Blast-Wave Model of Gamma-Ray Bursts
J. Chiang, C. D. Dermer
We investigate the dynamics and radiation from a relativistic blast-wave which decelerates as it sweeps up ambient matter. The bulk kinetic energy of the blast-wave shell is conver…