The fourth BATSE gamma-ray burst catalog (revised)

The Burst and Transient Source Experiment (BATSE) on the Compton Gamma Ray Observatory (CGRO) has triggered on 1637 cosmic gamma-ray bursts between 19 91 April 19 and 1996 August 29. These events constitute the Fourth BATSE bu rst catalog. The current version (4Br) has been revised from the version fi rst circulated on CD-ROM in 1997 September (4B) to include improved locatio ns for a subset of bursts that have been reprocessed using additional data. A significant difference from previous BATSE catalogs is the inclusion of bursts from periods when the trigger energy range differed from the nominal 50-300 keV. We present tables of the burst occurrence times, locations, pe ak fluxes, fluences, and durations. In general, results from previous BATSE catalogs are confirmed here with greater statistical significance.