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2 results

  • GRB 101225A - a new class of GRBs?

  • C. C. Thöne, A. de Ugarte Postigo, C. Fryer, K. Page, J. Gorosabel, D. Perley, M. Aloy, C. Kouveliotou, the Christmas Burst collaboration
  • Journal:
    Proceedings of the International Astronomical Union / Volume 7 / Issue S279 / April 2011
    Published online by Cambridge University Press:
    05 September 2012, pp. 91-94
    Print publication:
    April 2011
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  • The Christmas burst, GRB 101225A, was one of the most controversial bursts in the last few years. Its exceptionally long duration but bright X-ray emission showing a thermal component followed by a strange afterglow with a thermal SED lead to two different interpretations. We present here our model ascribing this strange event to a new type of GRB progenitor consisting of a neutron star and an evolved main-sequence star in a very faint galaxy at redshift 0.33 while Campana et al. (2011) proposed a Galactic origin. New observations at several wavelengths might resolve the question between the two models in the near future.

  • Young X-ray-Emitting Supernovae in Galaxies

  • Eric M. Schlegel
  • Journal:
    Proceedings of the International Astronomical Union / Volume 1 / Issue S230 / August 2005
    Published online by Cambridge University Press:
    12 May 2006, pp. 252-258
    Print publication:
    August 2005
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  • This talk reviews the observations of the high-energy emission of young supernovae, providing an update from previous reviews in 1995 and 2003. A summary plot shows the number distribution of X-ray luminosities, currently totalling 25 supernovae, from which it is clear that SN IIP are weak X-ray sources, SN IIn are very luminous sources, and SN Ib/c cover a broad range in luminosity.