Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21912704c&link_type=abstract
American Astronomical Society, AAS Meeting #219, #127.04
Astronomy and Astrophysics
Astronomy
Scientific paper
With 7 decades in energy coverage, the Fermi satellite has opened a new window into the study of gamma-ray bursts (GRBs): the MeV/GeV regime. In the first part of my talk, I will provide a brief overview of the many exciting GRB results from Fermi to date, including the detection of a long-lived (≈ 1000 s) GeV ``afterglow'' from several events, and the discovery and theoretical implications of additional (possibly photospheric) emission components in several prompt high-energy GRB spectra. In the second half, I will describe how Fermi provides an incredibly efficient way to target the most luminous GRBs in the universe, and what observations of the broadband afterglows of these sources reveal about the geometry, beaming-corrected energetics, circumburst environments, and progenitor systems of these explosions.
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