Nonthermal Synchrotron and Synchrotron Self-Compton Emission from GRBs: Predictions for Swift and GLAST

Journal Article · Thu May 22 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2943490· OSTI ID:21137201

Finke, Justin D ^[1]; Dermer, Charles D ^[2]; Boettcher, Markus ^[3]

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1. U.S. Naval Research Laboratory, Code 7653, Washington, DC 20375 (United States) and NRL/NRC Research Associate
2. U.S. Naval Research Laboratory, Code 7653, Washington, DC 20375 (United States)
3. Astrophysical Institute, Department of Physics and Astronomy, Athens, Ohio 45701 (United States)

Results of a leptonic jet model for the prompt emission and early afterglows of GRBs are presented. The synchrotron component is modeled with the canonical Band spectrum and the synchrotron self-Compton component is calculated from the implied synchrotron-emitting electron spectrum in a relativistic plasma blob. In the comoving frame the magnetic field is assumed to be tangled and the electron and photon distributions are assumed to be isotropic. The Compton-scattered spectrum is calculated using the full Compton cross-section in the Thomson through Klein-Nishina using the Jones formula. Pair production photoabsorption, both from ambient radiation in the jet and from the extragalactic background light (EBL), is taken into account. Results are presented as a function of a small set of parameters: the Doppler factor, the observed variability timescale, the comoving magnetic field, the peak synchrotron flux, and the redshift of the burst. Model predictions will be tested by multiwavelength observations, including the Swift and GLAST satellites, which will provide unprecedented coverage of GRBs.

• OSTI ID: 21137201
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1000; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AFTERGLOW
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
CROSS SECTIONS
DISTRIBUTION
ELECTRON PAIRS
ELECTRON SPECTRA
ELECTRONS
GAMMA ASTRONOMY
GAMMA DETECTION
MAGNETIC FIELDS
PAIR PRODUCTION
PHOTON EMISSION
RED SHIFT
RELATIVISTIC PLASMA
SYNCHROTRON RADIATION