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

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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 {approx} 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 … continued below

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5 pages

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Funk, S. October 10, 2007.

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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 {approx} 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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5 pages

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http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-12872.html

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  • Journal Name: AIP Conf.Proc.921:302-306,2007; Conference: Prepared for 1st GLAST Symposium, Stanford, Palo Alto, 5-8 Feb 2007

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  • Report No.: SLAC-PUB-12872
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 917735
  • Archival Resource Key: ark:/67531/metadc888131

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  • October 10, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Sept. 26, 2017, 3:04 p.m.

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Funk, S. X-Ray Observations of Unidentified H.E.S.S. Gamma-Ray Sources, article, October 10, 2007; [Menlo Park, California]. (https://digital.library.unt.edu/ark:/67531/metadc888131/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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