AAS 195th Meeting, January 2000
Session 26. Compact Objects: Old, New and Anomalous Friends
Oral, Wednesday, January 12, 2000, 10:00-11:30am, Hanover F and G

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[26.08] Precise IPN Localization of the Bursting Pulsar GROJ1744-28

K. Hurley (UCB SSL), C. Kouveliotou (USRA-MSFC), A. Harmon, G. Fishman, M. Briggs (NASA-MSFC), J. van Paradijs (UAH, Astron. Inst. "Anton Pannekoek"), J. Kommers, W. Lewin (MIT-CSR), T. Cline (NASA-GSFC)

Over the 1.5 year period in 1995-1997 when GRO J1744-28 was active, BATSE observed ~5800 bursts from the source. ~500 of them were also observed by the GRB experiment aboard \it Ulysses \rm. But, although the source was prolific, it was not particularly intense compared with cosmic gamma-ray bursts and soft gamma repeaters. The overwhelming majority of the bursts were therefore observed by \it Ulysses \rm in a real-time data mode, with time resolutions of 0.25 - 2 s. Each of these bursts can be triangulated to an annulus. Using a statistical method, we have combined the annuli to form an error box. We compare this error box with those obtained from soft X-ray observations, and with the positions of the radio and near-IR sources which have been proposed as the counterparts to the Bursting Pulsar.

This work was supported by JPL Contract 958056 and NASA grant NAG5-7810.

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