The Ulysses supplement to the first BATSE catalog of gamma-ray bursts

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Abstract
The first BATSE catalog contains localization information on 260 gamma‐ray bursts from April 1991 to March 1992. Approximately 53 of these bursts were detected by one or more instruments in the third interplanetary network. Of this subset, 39 bursts were observed only by Ulysses and one or more near‐Earth spacecraft (but always including BATSE). For these bursts, it is possible to reduce the size of the BATSE error region by a factor of several hundred, by deriving triangulation annuli whose widths are of the order of arcminutes and larger. Combined with the BATSE error circle, this leads to localization areas of the order of 1000 square arcminutes, which are useful for optical transient, soft x‐ray, VHE, and UHE counterpart searches, as well as for searching for burster recurrence. We present data for these events in tabular form, display an example of an error box, and show the distribution of the minimum separation between the annuli and the centers of the BATSE error boxes.

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