X-Ray Observations of Unidentified H.E.S.S. Gamma-Ray Sources

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  • X-Ray Observations of Unidentified H.E.S.S. Gamma-Ray Sources Book Detail

  • Author :
  • Release Date : 2007
  • Publisher :
  • Genre :
  • Pages : 5
  • ISBN 13 :
  • File Size : 49,49 MB

X-Ray Observations of Unidentified H.E.S.S. Gamma-Ray Sources by PDF Summary

Book Description: In a survey of the inner part of the Galaxy, performed with the H.E.S.S. Instrument (High energy stereoscopic system) in 2004 and 2005, a large number of new unidentified very high energy (VHE) [gamma]-ray sources above an energy of 100 GeV was discovered. Often the [gamma]-ray spectra in these sources reach energies of up to H"10 TeV. These are the highest energy particles ever attributed to single astrophysical objects. While a few of these sources can be identified at other wavebands, most of these sources remain unidentified so far. A positive identification of these new g-ray sources with a counterpart object at other wavebands requires (a) a positional coincidence between the two sources, (b) a viable [gamma]-ray emission mechanism and (c) a consistent multiwavelength behavior of the two sources. X-ray observations with satellites such as XMM-Newton, Chandra or Suzaku provide one of the best channels to studying these enigmatic [gamma]-ray sources at other wavebands, since they combine high angular resolution and sensitivity with the ability to access non-thermal electrons through their synchrotron emission. We therefore have started a dedicated program to investigate VHE [gamma]-ray sources with high-sensitivity X-ray instruments.

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