Going out with a bang: compact object collisions resulting from supernovae in binary systems

Details Going out with a bang: compact object collisions resulting from supernovae in binary systems Going out with a bang: compact object collisions resulting from supernovae in binary systems

2009-09-21

arxiv.org/abs/0909.3632v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

7 pages, 4 figures, accepted for publication in MNRAS

Scientific paper

Binary star systems containing a neutron star or a black hole with an evolved, massive star are dynamically perturbed when the latter undergoes a supernova explosion. It is possible that the natal kick received by the newly-formed neutron star in the supernova may place the stellar remnants into a bound, highly eccentric orbit. In this case, the two compact objects can tidally interact and spiral into one another on a short timescale. The interaction with an accretion disc of supernova debris is also considered. We quantify the likelihood of such events and show that they would be expected to produce a high-energy transient, possibly a short gamma-ray burst, typically within a few days of the supernova.

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