Late-time Activity of Gamma-ray Burst Central Engines

Details Late-time Activity of Gamma-ray Burst Central Engines Late-time Activity of Gamma-ray Burst Central Engines

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.1505p&link_type=abstract

American Astronomical Society, HEAD meeting #10, #15.05

Astronomy and Astrophysics

Astronomy

Scientific paper

Recent observations of short gamma-ray bursts indicate continued activity on much longer timescales than the typical dynamical time of the interacting compact objects. Motivated by this, we calculate time-dependent models of the remnant disks from binary neutron star or black hole-neutron star mergers. We focus on the region near the outer edge of the disk, which contains the majority of the disk mass and determines the mass feeding rate. We summarize the main features of these disks and describe how these features may relate to the observed late-time activity. The disks generally have a large neutron content, which may make them attractive as r-process sources.

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