Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545329k&link_type=abstract
American Astronomical Society, AAS Meeting #215, #453.29; Bulletin of the American Astronomical Society, Vol. 42, p.467
Astronomy and Astrophysics
Astrophysics
Scientific paper
Soft gamma repeaters (SGRs) are nearby, they burst repeatedly and sometimes spectacularly, and their burst emission mechanism may involve neutron star crust fractures and excitation of non-radial modes which could emit gravitational waves (GW). We present recent searches for GW associated with SGR bursts, including a "stacked" search of the 2006 March SGR 1900+14 storm and an individual burst search of SGR events which occurred between 2006 November and 2009 June. The former search stacks potential GW signals from individual bursts within the storm event, resulting in a 12x gain in GW energy sensitivity. The latter search examines burst events from six magnetar sources, including one (SGR 0501+4516) which is likely < 1 kpc from Earth, and uses data from five GW detectors. Due to the proximity of SGR 0501+4516 we are able to probe GW energies more than an order of magnitude lower than previous SGR GW searches. We present results from these searches and discuss the emerging astrophysical context.
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