Mathematics – Logic
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1133..422s&link_type=abstract
GAMMA-RAY BURST: Sixth Huntsville Symposium. AIP Conference Proceedings, Volume 1133, pp. 422-424 (2009).
Mathematics
Logic
Gamma-Ray Sources, Gamma-Ray Bursts, Numerical Approximation And Analysis, Relativity And Gravitation
Scientific paper
The prompt emission from gamma-ray bursts is the most direct observation we have of the mysterious central engine. It also remains one of the most enigmatic and intriguing phases of the GRB. Due to the difficulty in simulating highly relativistic hydrodynamic flows and calculating their observational signatures, efforts to model this phase to date have been primarily either crude analytical, or approximate numerical treatments. We present results from a new numerical framework which post-processes relativistic hydrodynamic simulations of internal shocks from the COSMOS++ code to provide a multi-wavelength temporal emission profile as would be seen by an observer. This framework allows for the study of arbitrary shock geometries, energetics, and emission mechanisms and to make clear predictions of their observable consequences. Our method is general and thus includes all relativitic time-of-flight, doppler, and aberrative effects as well as cosmological redshift.
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