Abstract
We report an earliest detection of an optical afterglow of GRB 030329 at the Tokyo Institute of Technology (Tokyo, Japan). Our observation started 67 minutes after the burst and continued for two succeeding nights. Combining our data with those reported in GCN, we find that the early afterglow light curve of the first half day is described by a broken powerlaw (α t -α) function with indices α1 = 0.88 ± 0.01 (0.047 days < t < tb1), α2 = 1.18 ± 0.01 (tb1 < t < tb2), and α 3 = 1.81 ± 0.04 (tb2 < t < 1.2 days), where tb1 ∼ 0.26 days and tb2 ∼ 0.54 days, respectively. The change of the power-law index at the first break at t ∼ 0.26 days is consistent with that expected from a "cooling break".
| Original language | English |
|---|---|
| Pages (from-to) | 411-412 |
| Number of pages | 2 |
| Journal | Progress of Theoretical Physics Supplement |
| Volume | 155 |
| Publication status | Published - 2004 |
| Externally published | Yes |
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Earliest detection of the optical afterglow of GRB 030329 and its variability. / Sato, Rie; Kawai, Nobuyuki; Suzuki, Motoko; Yatsu, Youichi; Kataoka, Jun; Takagi, Ryo; Yanagisawa, Kenshi; Yamaoka, Hitoshi.
In: Progress of Theoretical Physics Supplement, Vol. 155, 2004, p. 411-412.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Earliest detection of the optical afterglow of GRB 030329 and its variability
AU - Sato, Rie
AU - Kawai, Nobuyuki
AU - Suzuki, Motoko
AU - Yatsu, Youichi
AU - Kataoka, Jun
AU - Takagi, Ryo
AU - Yanagisawa, Kenshi
AU - Yamaoka, Hitoshi
PY - 2004
Y1 - 2004
N2 - We report an earliest detection of an optical afterglow of GRB 030329 at the Tokyo Institute of Technology (Tokyo, Japan). Our observation started 67 minutes after the burst and continued for two succeeding nights. Combining our data with those reported in GCN, we find that the early afterglow light curve of the first half day is described by a broken powerlaw (α t -α) function with indices α1 = 0.88 ± 0.01 (0.047 days < t < tb1), α2 = 1.18 ± 0.01 (tb1 < t < tb2), and α 3 = 1.81 ± 0.04 (tb2 < t < 1.2 days), where tb1 ∼ 0.26 days and tb2 ∼ 0.54 days, respectively. The change of the power-law index at the first break at t ∼ 0.26 days is consistent with that expected from a "cooling break".
AB - We report an earliest detection of an optical afterglow of GRB 030329 at the Tokyo Institute of Technology (Tokyo, Japan). Our observation started 67 minutes after the burst and continued for two succeeding nights. Combining our data with those reported in GCN, we find that the early afterglow light curve of the first half day is described by a broken powerlaw (α t -α) function with indices α1 = 0.88 ± 0.01 (0.047 days < t < tb1), α2 = 1.18 ± 0.01 (tb1 < t < tb2), and α 3 = 1.81 ± 0.04 (tb2 < t < 1.2 days), where tb1 ∼ 0.26 days and tb2 ∼ 0.54 days, respectively. The change of the power-law index at the first break at t ∼ 0.26 days is consistent with that expected from a "cooling break".
UR - http://www.scopus.com/inward/record.url?scp=11044219891&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=11044219891&partnerID=8YFLogxK
M3 - Article
VL - 155
SP - 411
EP - 412
JO - Progress of Theoretical Physics
JF - Progress of Theoretical Physics
SN - 0033-068X
ER -