Swift Observations of GRB 070110: An Extraordinary X-Ray Afterglow Powered by the Central Engine

  title={Swift Observations of GRB 070110: An Extraordinary X-Ray Afterglow Powered by the Central Engine},
  author={Eleonora Troja and G Cusumano and P. O’brien and B. B. Zhang and B. Sbarufatti and Vanessa Mangano and Richard Willingale and Guido L. Chincarini and Julian P. Osborne and Fiona Marshall and David N. Burrows and Sergio Campana and N. Gehrels and Cristiano Guidorzi and Hans A. Krimm and Valentina La Parola and E. W. Liang and T. Mineo and Alberto Moretti and Kim L. Page and Patrizia Romano and Gianpiero Tagliaferri and B. B. Zhang and M. J. Page and Patricia Schady},
  journal={The Astrophysical Journal},
  pages={599 - 607}
We present a detailed analysis of Swift multiwavelength observations of GRB 070110 and its remarkable afterglow. The early X-ray light curve, interpreted as the tail of the prompt emission, displays a spectral evolution already seen in other gamma-ray bursts. The optical afterglow shows a shallow decay up to ~2 days after the burst, which is not consistent with standard afterglow models. The most intriguing feature is a very steep decay in the X-ray flux at ~2 × 104 s after the burst, ending an… 


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