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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2109 SUBJECT: GRB 030329: possible color change DATE: 03/04/07 03:27:57 GMT FROM: Krzysztof Z. Stanek at CfA <kstanek@cfa.harvard.edu> D. Bersier, R. Schild and K. Z. Stanek (CfA) report: We imaged the optical afterglow of GRB 030329 (Peterson & Price: GCN 1985; Torii: GCN 1986) with the FLWO 1.2-m telescope between April 5 UT 03:11 and April 6 UT 08:49 using standard BVRI filters. During that time, the color of the OT seems to have changed by ~0.15 in B-V (OT getting redder) and by ~0.1 in V-I (OT getting bluer). This seems to be consistent with the supernova signature discovered by Matheson et al. (GCN 2107). This message may be cited.
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