A Nontriggered Burst Supplement to the BATSE Gamma-Ray Burst Catalogs

Details A Nontriggered Burst Supplement to the BATSE Gamma-Ray Burst Catalogs A Nontriggered Burst Supplement to the BATSE Gamma-Ray Burst Catalogs

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apjs..134..385k&link_type=abstract

The Astrophysical Journal Supplement Series, Volume 134, Issue 2, pp. 385-454.

Astronomy and Astrophysics

Astronomy

12

Catalogs, Gamma Rays: Bursts

Scientific paper

The Burst and Transient Source Experiment (BATSE) on the Compton Gamma Ray Observatory detects gamma-ray bursts (GRBs) with a real-time burst detection (or ``trigger'') system running on-board the spacecraft. Under some circumstances, however, a GRB may not activate the on-board burst trigger. For example, the burst may be too faint to exceed the on-board detection threshold, or it may occur while the on-board burst trigger is disabled for technical reasons. This paper describes a catalog of 873 ``nontriggered'' GRBs that were detected in a search of the archival continuous data from BATSE recorded between 1991 December 9.0 and 1997 December 17.0. For each burst, the catalog gives an estimated source direction, duration, peak flux, and fluence. Similar data are presented for 50 additional bursts of unknown origin that were detected in the 25-50 keV range; these events may represent the low-energy ``tail'' of the GRB spectral distribution. This catalog increases the number of GRBs detected with BATSE by 48% during the time period covered by the search.

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