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High Energy Radiation from Gamma Ray Bursts
Charles D. Dermer, James Chiang
Gamma-ray burst (GRB) engines are probed most intimately during the prompt gamma-ray luminous phase when the expanding blast wave is closest to the explosion center. Using GRBs 990…
Beaming, Baryon-Loading, and the Synchrotron Self-Compton Component in Gamma-Ray Burst Blast Waves Energized by External Shocks
Charles D. Dermer, James Chiang, Kurt E. Mitman
We present detailed calculations of nonthermal synchrotron and synchrotron self-Compton (SSC) spectra radiated by blast waves that are energized by interactions with a uniform surr…
Spectral Energy Distributions of Gamma Ray Bursts Energized by External Shocks
C. D. Dermer, M. Boettcher, J. Chiang
Sari, Piran, and Narayan have derived analytic formulas to model the spectra from gamma-ray burst blast waves that are energized by sweeping up material from the surrounding medium…
The External Shock Model of Gamma-Ray Bursts: Three Predictions and a Paradox Resolved
Charles D. Dermer, Markus Boettcher, J. Chiang
In the external shock model, gamma-ray burst (GRB) emissions are produced by the energization and deceleration of a thin relativistic blast wave due to its interactions with the ci…
Correlated Spectral and Temporal Variability in the High-Energy Emission from Blazars
C. D. Dermer, H. Li, J. Chiang
Blazar flare data show energy-dependent lags and correlated variability between optical/X-ray and GeV-TeV energies, and follow characteristic trajectories when plotted in the spect…
Variability in Blazars
Charles D. Dermer
The kinetic energy of bulk relativistic plasma ejected from the central engine of blazars is converted into nonthermal particle energy in the comoving frame through a process of sw…