Early re-brightening of the afterglow of GRB 050525a

Details Early re-brightening of the afterglow of GRB 050525a Early re-brightening of the afterglow of GRB 050525a

2005-06-12

arxiv.org/abs/astro-ph/0506259v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, submitted to A&A

Scientific paper

10.1051/0004-6361:200500153

We present time resolved optical data acquired by the TAROT automated observatory on the afterglow of GRB 050525a from 6 to 136 minutes after the GRB. We evidence a rapid re-brightening of 0.65 magnitude of the afterglow at $\sim$ 33 min after the GRB. The decay slope $\alpha$ is $1.14\pm 0.07$ in the first part and is $1.23\pm 0.27$ after the re-brightening event. The afterglow of GRB 050525a is the third known afterglow that exhibits a re-brightening event begining at 0.01--0.02 day in the rest time frame.

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