Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004txra.confe...1a&link_type=abstract
22nd Texas Symposium on Relativistic Astrophysics
Astronomy and Astrophysics
Astrophysics
2
Grbs, Grhd, Jets, Numerical Simulations
Scientific paper
We summarize the most important results of a series of relativistic hydrodynamic simulations of mergers of compact binaries as potential candidates to be progenitors of short gamma-ray bursts. We discuss some of the generic conditions under which a short gamma-ray burst can be initiated and collimated in this kind of progenitor and the main characteristics of the resulting outflow. We conclude that not every merger will be able to produce a short gamma-ray burst. The generation of a successful event depends on the mass of the halo produced during the process of merging of the system. Due to the lateral structure of the generated ultrarelativistic outflows we expect some degree of variability between observed bursts, depending on the viewing angle relative to the system axis. Such differences will be superimposed on variations due to intrinsic properties of the binary systems and remnant BH-torus systems, e.g., associated with different masses and spins of the merging neutron stars or black holes.
Aloy Miguel A.
Janka H.-Th.
Muller Eduard
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