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Transient Absorption Features in GRBs and Their Implications for GRB Progenitors
M. Boettcher, C. L. Fryer, C. D. Dermer
The recent detection of a transient absorption feature in the prompt emission of GRB 990705 has sparked multiple attempts to fit this feature in terms of photoelectric absorption o…
Radiation from collision-dominated relativistic pair fireballs
M. Boettcher, R. Schlickeiser, A. Marra
It is generally accepted that gamma-ray bursts (GRBs) are initiated by a relativistic pair fireball, converting its internal energy into kinetic energy of a relativistically moving…
An evolutionary scenario for blazar unification
M. Boettcher, C. D. Dermer
Blazar subclasses ranging from flat-spectrum radio quasars (FSRQs) through low-frequency-peaked BL Lac objects (LBLs) to high-frequency-peaked BL Lac objects (HBLs) exhibit a seque…
Day-Scale Variability of 3C 279 and Searches for Correlations in Gamma-Ray, X-Ray, and Optical Bands
R. C. Hartman, M. Villata, T. J. Balonek +36
Light curves of 3C 279 are presented in optical (R-band), X-rays (RXTE/PCA), and gamma rays (CGRO/EGRET) for 1999 Jan-Feb and 2000 Jan-Mar. During both of those epochs the gamma-ra…
An analytic function fit to Monte-Carlo X- and gamma-ray spectra from Thomson thick thermal/nonthermal hybrid plasmas
M. Boettcher, R. Saxena, A. W. Crider
We suggest a simple fitting formula to represent Comptonized X- and gamma-ray spectra from a hot ( keV), Thomson thick () hybrid thermal/nonthermal…