[AAVSO-HEN] GRB 080319B : Lulin observation of temporal break at 0.2 days

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TITLE:   GCN CIRCULAR
NUMBER:  7471
SUBJECT: GRB 080319B : Lulin observation of temporal break at 0.2 days 
DATE:    08/03/20 01:26:15 GMT
FROM:    Yuji Urata at Saitama U  <urata at asiaa.sinica.edu.tw>

Y. Urata, K.Y. Huang, C.Y. Shih, T.W. Chen, M. Im, I. Lee,
on behalf of EAFON report:

"We have monitored the GRB 080319B optical afterglow using Lulin 1-m
telescope with B, V, R, I and z' bands from 16:18 to 21:19 (UT).
Comparing with former observations made by the LOAO (Urata et al. GCN
7435), the R and I band light curves show an apparent temporal break
again at ~0.2 days after the burst. The decay index of the post-break
is ~-0.8."

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