Prompt optical observations of gamma-ray bursts

被引:38
作者
Akerlof, C
Balsano, R
Barthelmy, S
Bloch, J
Butterworth, P
Casperson, D
Cline, T
Fletcher, S
Frontera, F
Gisler, G
Heise, J
Hills, J
Hurley, K
Kehoe, R
Lee, B
Marshall, S
McKay, T
Pawl, A
Piro, L
Szymanski, J
Wren, J
机构
[1] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA
[2] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[3] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[4] Univ Ferrara, I-44100 Ferrara, Italy
[5] Ruimteonderzoek, Space Res Org Netherlands, NL-3584 CA Utrecht, Netherlands
[6] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[7] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA
[8] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[9] CNR, Inst Astrofis Spaziale, Rome, Italy
关键词
gamma rays : bursts; gamma rays : observations;
D O I
10.1086/312567
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The Robotic Optical Transient Search Experiment (ROTSE) seeks to measure simultaneous and early afterglow optical emission from gamma-ray bursts (GRBs). A search for optical counterparts to six GRBs with localization errors of 1 deg(2) or better produced no detections. The earliest limiting sensitivity is m(ROTSE) > 13.1 at 10.85 s (5 s exposure) after the gamma-ray rise, and the best limit is m(ROTSE) > 16.0 at 62 minutes (897 s exposure). These are the most stringent limits obtained for the GRB optical counterpart brightness in the first hour after the burst. Consideration of the gamma-ray fluence and peak flux for these bursts and for GRB 990123 indicates that there is not a strong positive correlation between optical flux and gamma-ray emission.
引用
收藏
页码:L25 / L28
页数:4
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