TY - JOUR
T1 - Optical follow-up of the GRB 010222 afterglow by Subaru telescope
AU - Watanabe, Jun Ichi
AU - Kinoshita, Daisuke
AU - Komiyama, Yutaka
AU - Fuse, Tetsuharu
AU - Urata, Yuji
AU - Yoshida, Fumi
PY - 2001
Y1 - 2001
N2 - The optical afterglow of a gamma ray burst, GRB 010222, which was discovered by the BeppoSAX Team as the brightest one ever detected, was observed by Suprime-Cam of the Subaru Telescope at Mauna Kea. The obtained R-band magnitude was 18.59 ± 0.04 at February 22.51 UT, 18.99 ± 0.04 at February 22.65 UT, and 21.76 ± 0.03 at February 25.64 UT. The light curve made from all data reported so far shows the decay of the brightness with a broken power law, of which the indices are -0.92 ± 0.01 before and -1.27 ± 0.01 after the break. The break point of the light curve is 0.73 ± 0.02 d after the burst, which is the earliest example ever observed. A brief summary of our follow-up observations, together with the importance of the optical follow-up capable by the Subaru telescope, is described in this letter.
AB - The optical afterglow of a gamma ray burst, GRB 010222, which was discovered by the BeppoSAX Team as the brightest one ever detected, was observed by Suprime-Cam of the Subaru Telescope at Mauna Kea. The obtained R-band magnitude was 18.59 ± 0.04 at February 22.51 UT, 18.99 ± 0.04 at February 22.65 UT, and 21.76 ± 0.03 at February 25.64 UT. The light curve made from all data reported so far shows the decay of the brightness with a broken power law, of which the indices are -0.92 ± 0.01 before and -1.27 ± 0.01 after the break. The break point of the light curve is 0.73 ± 0.02 d after the burst, which is the earliest example ever observed. A brief summary of our follow-up observations, together with the importance of the optical follow-up capable by the Subaru telescope, is described in this letter.
KW - Cosmology: Early universe
KW - Gamma rays: Bursts
KW - Gamma rays: Individual (GRB 010222)
KW - Gamma rays: Observations
KW - High energy astrophysics: General
UR - http://www.scopus.com/inward/record.url?scp=0035665426&partnerID=8YFLogxK
U2 - 10.1093/pasj/53.4.L27
DO - 10.1093/pasj/53.4.L27
M3 - 期刊論文
AN - SCOPUS:0035665426
SN - 0004-6264
VL - 53
SP - L27-L31
JO - Publications of the Astronomical Society of Japan
JF - Publications of the Astronomical Society of Japan
IS - 4
ER -