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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…
Time-dependent photoelectric absorption, photoionization and fluorescence line emission in gamma-ray burst environments
M. Boettcher, C. D. Dermer, A. W. Crider +1
If gamma-ray bursts are associated with dense star-forming regions in young galaxies, photoelectric absorption by the dense circumburster material (CBM) will occur. As the burst ev…
Short Timescale Variability in the External Shock Model of Gamma Ray Bursts
Charles D. Dermer, Kurt E. Mitman
We have developed a computer model to calculate gamma ray burst (GRB) light curves and efficiencies from the interaction of a single, thin blast wave with clouds in the external me…
On Spectral and Temporal Variability in Blazars and Gamma Ray Bursts
Charles D. Dermer
A simple model for variability in relativistic plasma outflows is studied, in which nonthermal electrons are continuously and uniformly injected in the comoving frame over a time i…
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…