High‐Quality Early‐Time Light Curves of GRB 060206: Implications for Gamma‐Ray Burst Environments and Energetics | Zendy

A. Monfardini | Zendy; S. Kobayashi | Zendy; C. Guidorzi | Zendy; D. Carter | Zendy; C. G. Mundell | Zendy; D. Bersier | Zendy; A. Gomboc | Zendy; A. Melandri | Zendy; C. J. Mottram | Zendy; R. J. Smith | Zendy; I. A. Steele | Zendy

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High‐Quality Early‐Time Light Curves of GRB 060206: Implications for Gamma‐Ray Burst Environments and Energetics

Author(s) -

A. Monfardini,

S. Kobayashi,

C. Guidorzi,

D. Carter,

C. G. Mundell,

D. Bersier,

A. Gomboc,

A. Melandri,

C. J. Mottram,

R. J. Smith,

I. A. Steele

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/506170

Subject(s) - gamma ray burst , light curve , afterglow , physics , redshift , astrophysics , jet (fluid) , galaxy , thermodynamics

The 2-m robotic Liverpool Telescope (LT) reacted promptly to thehigh-redshift (z=4.048) gamma-ray burst GRB 060206. The afterglow wasidentified automatically and multicolor r'i'z' imaging was triggered withouthuman intervention. Combining our data with those obtained from laterfollow-ups provides a well-sampled optical light-curve from 5 minutes to >2dafter the gamma event. The light-curve is highly structured with at least threebumps evident in the first 75 minutes, including a major rebrightening(Delta_r'=-1.6 at t=3000s), interpreted as late energy injection. At early time(t=440s), we find evidence for fast (Delta t_(rest)<4s<

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