Multi-Wavelength Observations of May 1 1992 Gamma-Ray Burst

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Session 33 -- Gamma-Rays and Cosmic Rays
Display presentation, Tuesday, 9:30-6:30, Heller Lounge Room

[33.04] Multi-Wavelength Observations of May 1 1992 Gamma-Ray Burst

P. Li, K. Hurley (SSL), M. Sommer (MPIFEP), A. Smette (ESO), C. Kouveliotou, G. Fishman (MSFC), T. Cline (GSFC), M. Boer, M. Niel (CESR), J. Laros (LANL)

The gamma-ray burst of May 1 1992 was observed by three detectors in the interplanetary network: GRB/Ulysses, BATSE/Compton GRO, and PVO. The position of the burst was quickly determined to a small hexagonal error box (<1.6 $arcmin^{2}$) by triangulation. Quick follow-up observations of the gamma-ray burst position in X-ray, optical, and radio wavelengths were carried out. We have found a weak X-ray source inside the burst error box, and two radio sources outside the error box. Those two radio sources are in alignment with the X-ray source, and are 2.1 arcmin and 4.7 arcmin away from the X-ray source. In the X-ray source error box, we have found 25 optical objects down to 23rd magnitude. The X-ray source spectrum is not well determined, but the ratio of hard (0.4-2.4 keV) to soft (0.07-0.4 keV) counts appears to be consistent with interstellar absorption. We discuss the possible association between the burster, the X-ray, and the radio sources.

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