Radio Observations of the Afterglow of GRB 030329

Details Radio Observations of the Afterglow of GRB 030329 Radio Observations of the Afterglow of GRB 030329

2004-01-14

arxiv.org/abs/astro-ph/0401258v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, to be published in PASJ Vol.56, No.2

Scientific paper

We present the results of the radio observations of the afterglow of GRB 030329 with the Nobeyama 45-m telescope. The observations were made at 23.5 GHz, 43 GHz, and 90 GHz. The light curves show steep decline after constant phase. The start time of the decline depends on frequency. Namely, the decline started earlier at higher frequency. The spectrum has a peak at mm wavelength range. The peak frequency and the peak flux decreased with time. These results are consistent with the expectation from fireball model.

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