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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2047 SUBJECT: GRB 030329, R-band light curve DATE: 03/03/31 19:00:09 GMT FROM: Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de> A. Zeh, S. Klose (Thueringer Landessternwarte Tautenburg), M. Nysewander, D. Reichart (University of North Carolina at Chapel Hill), J. Greiner (MPE Garching) report: We selected from the GCN literature all available R-band data of the afterglow of GRB 030329 (including the unfiltered ROTSE data; Rykoff and Smith, GCN 1995). We fitted the afterglow light curve using the standard Beuermann equation (A&A 352, L26). The result is: alpha_1 = 0.85 +/- 0.07, alpha_2 = 1.45 +/- 0.09, t_break = 0.39 +/- 0.06 days. The substantial re-brightening reported by Lipkin et al. (GCN 2045) and Burenin et al. (GCN 2046) seems to be similar to that seen in the afterglow light curve of GRBs 000301C and 021004. A plot including a predicted supernova component and assuming a negligible contribution from an underlying host galaxy is available via anonymous ftp from ftp.tls-tautenburg.de, dir /pub/klose/10/. A multi-color plot is available at http://www.physics.unc.edu/~mnysewan/grb030329.html.
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