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arXiv · astro-ph/9903385

A ROSAT Deep Survey of Four Small Gamma-Ray Burst Error Boxes

K. Hurley·P. Li·M. Boer·T. Cline·G. J. Fishman·C. Meegan·C. Kouveliotou·J. Greiner·J. Laros·C. Luginbuhl·F. Vrba·T. Murakami·H. Pedersen·J. van Paradijs
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Abstract

We have used the ROSAT High Resolution Imager to search for quiescent X-ray counterparts to four gamma-ray bursts which were localized to small (< 10 sq. arcmin.) error boxes with the Interplanetary Network. The observations took place years after the bursts, and the effective exposure times for each target varied from ~16 - 23 ks. We have not found any X-ray sources inside any of the error boxes. The 0.1 - 2.4 keV 3 sigma flux upper limits range from around 5 x 10^-14 erg cm^-2 s^-1 to 6 x 10^-13 erg cm^-2 s^-1 depending on the burst and the assumed shape of the quiescent spectrum. We consider four types of X-ray emitting galaxies (normal, AGN, faint, and star-forming) and use the flux upper limits to constrain their redshifts. We then use the GRB fluences to constrain the total energies of the bursts.

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K. Hurley, P. Li, M. Boer, T. Cline, G. J. Fishman, C. Meegan, C. Kouveliotou, J. Greiner, J. Laros, C. Luginbuhl, F. Vrba, T. Murakami, H. Pedersen, J. van Paradijs. 1999-03-25. A ROSAT Deep Survey of Four Small Gamma-Ray Burst Error Boxes. https://doi.org/10.1086/307812

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