Gomboc 2006 Swift早期光学余辉回顾

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astro-ph/0612762 [abs, ps, pdf, other] :

Title: A Review of Early-Time Optical Follow-ups with 2-m Robotic Telescopes
Authors: A. Gomboc (1,2), C. Guidorzi (2,3), C.G. Mundell (2), A. Melandri (2), A. Monfardini (2), D. Bersier (2), M.F. Bode (2), D. Carter (2), S. Kobayashi (2), C.J. Mottram (2), R.J. Smith (2), I.A. Steele (2) (on behalf of the RoboNet-1.0 collaboration) ((1) University of Ljubljana, Slovenia, (2) Liverpool JMU, UK, (3) INAF - Osservatorio Astronomico di Brera, Merate, Italy)
Comments: 4 pages, 2 figures, Proceedings of the conference Swift and GRBs: Unveiling the Relativistic Universe - Venice, 5-9 June 2006 - To appear in "Il Nuovo Cimento"

We summarise recent deep, rapid GRB follow-up observations using the RoboNet-1.0 network which comprises three fully-robotic 2-m telescopes, the Liverpool Telescope and the Faulkes Telescopes North and South. Observations begin automatically within minutes of receipt of a GRB alert and may continue for hours or days to provide well-sampled multi-colour light curves or deep upper limits. Our light curves show a variety of early afterglow behaviour, from smooth, simple or broken power laws to 'bumpy', for a wide range of optical brightness (from the unprecedented faint detections of GRB 060108 and GRB 060510B to classical bright ones). We discuss GRB 051111 as an example of how the combination of optical and X-ray light curves can provide insight into the circumburst environment, in particular the role played by intrinsic extinction soon after the burst.