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Optical studies of gamma-ray bursts. 2: The superbowl burst GRB 930131
We report Charge Couple Devices (CCD) observations of the central regionof the Compton Telescope (COMPTEL) error box for the 31 Jan 1993gamma-ray burst. One optical transient was found. Its distance from theIPN track and Energy Gamma Ray Experiment Telescope (EGRET) error boxmake the association of this object with GRB 930131 doubtful. We presentnew CCD observations of two objects identified by Schaefer et al. (1993)that are located within a few arcminutes of the interplanetary network(IPN) that were reported to be possibly variable. We also reportobservations on the ROSAT All-sky Survey Extreme Ultraviolet (EUV)source noted by those investigators and the RS CVn star HD 106255. TheROSAT All-Sky Survey EUV source is suggested to arise from a faint, butrelatively rich cluster of galaxies. HD 106255 is located approximately7 min from the IPN. Our CCD results show that this star was bluer thanpreviously reported, but these observations were obtained significantlyafter the occurrence of GRB 930131. It is not possible to estimate thecolor of HD 106255 when the burst occurred.
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