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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2034 SUBJECT: GRB030329 - Light curve flattening DATE: 03/03/30 23:27:35 GMT FROM: Eran Ofek at Tel Aviv U. <eran@wise1.tau.ac.il> Y. Lipkin, E. O. Ofek, A. Gal-Yam (Wise observatory, TAU) report: We are observing the field of GRB 030329 (HETE trigger #2652, Ricker et al., GCN 1997) with the TEK 1K CCD mounted on the 1-meter telescope of Wise Observatory, Israel. Based on the secondary reference stars provided by Henden (GCN 2023, RA, Dec (2000) = 10:44:39 +21:30:59, and 10:44:42 +21:32:32), we measure a magnitude of R=16.40 for the OT at 17:20 UT Preliminary analysis of 75 images, obtained during three hours of observations (17.2 UT - 20.5 UT) yields a power-law decay rate (alpha) of 0.7 +/- 0.1. It appears that the OT decline rate has flattened again, after the reported break (Halpern et al. GCN 2021).
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