Search for gamma-ray events in the BATSE data base

Details Search for gamma-ray events in the BATSE data base Search for gamma-ray events in the BATSE data base

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mit..reptq....l&link_type=abstract

Final Technical Report Massachusetts Inst. of Tech., Cambridge. Center for Space Research.

Astronomy and Astrophysics

Astronomy

Cygnus Constellation, Gamma Ray Astronomy, Gamma Ray Bursts, Position (Location), X Ray Sources, Position Errors, Signal To Noise Ratios

Scientific paper

We find large location errors and error radii in the locations of channel 1 Cygnus X-1 events. These errors and their associated uncertainties are a result of low signal-to-noise ratios (a few sigma) in the two brightest detectors for each event. The untriggered events suffer from similarly low signal-to-noise ratios, and their location errors are expected to be at least as large as those found for Cygnus X-1 with a given signal-to-noise ratio. The statistical error radii are consistent with those found for Cygnus X-1 and with the published estimates. We therefore expect approximately 20 - 30 deg location errors for the untriggered events. Hence, many of the untriggered events occurring within a few months of the triggered activity from SGR 1900 plus 14 are indeed consistent with the SGR source location, although Cygnus X-1 is also a good candidate.

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