Comparison of Very Short Bursts from BATSE, KONUS and SWIFT

Details Comparison of Very Short Bursts from BATSE, KONUS and SWIFT Comparison of Very Short Bursts from BATSE, KONUS and SWIFT

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1000..313c&link_type=abstract

GAMMA-RAY BURSTS 2007: Proceedings of the Santa Fe Conference. AIP Conference Proceedings, Volume 1000, pp. 313-316 (2008).

Computer Science

Gamma-Ray Sources, Gamma-Ray Bursts, Galactic Nuclei, Circumnuclear Matter, And Bulges, Unusual And Peculiar Variables, Dark Matter

Scientific paper

We show the locations of the SWIFT short hard bursts (SHB) with afterglows on the galactic map and compare with the VSB BATSE events. As we have pointed out before, there is an excess of events in the galactic map of BATSE VSB events. We note that none of VSB SWIFT era events fall into this cluster. More SWIFT events are needed to check this claim. We also report a new study with KONUS data of the VSB sample with an average energy above 90 keV showing a clear excess of events below 100 ms duration (T90) that have large mean energy photons. We suggest that VSBs themselves consists of two subclasses; a fraction of events have peculiar distribution properties and have no detectable counter parts, as might be expected for exotic sources such as Primordial Black Holes. New results from SWIFT will be compared with the BATSE VSB data.

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