The prompt to late-time multiwavelength analysis of GRB 060210

P. A. Curran, A. J. Van Der Horst, A. P. Beardmore, K. L. Page, E. Rol, A. Melandri, I. A. Steele, C. G. Mundell, A. Gomboc, P. T. O'Brien, D. F. Bersier, M. F. Bode, D. Carter, C. Guidorzi, J. E. Hill, C. P. Hurkett, S. Kobayashi, A. Monfardini, C. J. Mottram, R. J. SmithR. A.M.J. Wijers, R. Willingale

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Aims. We present our analysis of the multiwavelength photometric & spectroscopic observations of GRB 060210 and discuss the results in the overall context of current GRB models. Methods. All available optical data underwent a simultaneous temporal fit, while X-ray and γ-ray observations were analysed temporally & spectrally. The results were compared to each other and to possible GRB models. Results. The X-ray afterglow is best described by a smoothly broken power-law with a break at 7.4 h. The late optical afterglow has a well constrained single power-law index which has a value between the two X-ray indices, though it does agree with a single power-law fit to the X-ray. An evolution of the hardness of the high-energy emission is demonstrated and we imply a minimum host extinction from a comparison of the extrapolated X-ray flux to that measured in the optical. Conclusions. We find that the flaring γ-ray and X-ray emission is likely due to internal shocks while the flat optical light curve at that time is due to the external shock. The late afterglow is best explained by a cooling break between the optical and X-rays and continued central engine activity up to the time of the break. The required collimation corrected energy of ∼2 × 1052 erg, while at the high end of the known energy distribution, is not unprecedented.

Original languageEnglish
Pages (from-to)1049-1055
Number of pages7
JournalAstronomy and Astrophysics
Issue number3
Publication statusPublished - 1 Jun 2007


  • Gamma rays: bursts
  • ISM: dust, extinction
  • Radiation mechanisms: non-thermal
  • X-rays: individuals: GRB 060210

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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