X-ray observations of unidentified H.E.S.S. {gamma}-ray sources

Funk, S

doi:10.1063/1.2757329

Title: X-ray observations of unidentified H.E.S.S. {gamma}-ray sources

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Abstract

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 {gamma}-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 behaviour 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 programme to investigate VHE {gamma}-ray sources with high-sensitivity X-ray instruments.

Authors:: Funk, S

Publication Date:: Thu Jul 12 00:00:00 EDT 2007

OSTI Identifier:: 21067239

Resource Type:: Journal Article

Journal Name:: AIP Conference Proceedings

Additional Journal Information:: Journal Volume: 921; Journal Issue: 1; Conference: 1. GLAST symposium, Stanford, CA (United States), 5-8 Feb 2007; Other Information: DOI: 10.1063/1.2757329; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA). H.E.S.S. Collaboration; Journal ID: ISSN 0094-243X

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ASTROPHYSICS; COSMIC GAMMA SOURCES; COSMIC PHOTONS; ELECTRONS; GAMMA RADIATION; GAMMA SPECTRA; GEV RANGE; PHOTON EMISSION; RESOLUTION; SENSITIVITY; SYNCHROTRON RADIATION; TEV RANGE; X RADIATION

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                    Funk, S. X-ray observations of unidentified H.E.S.S. {gamma}-ray sources.  United States: N. p., 2007. 
        Web.  doi:10.1063/1.2757329.

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                    Funk, S. X-ray observations of unidentified H.E.S.S. {gamma}-ray sources.  United States.  https://doi.org/10.1063/1.2757329

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                    Funk, S. 2007.  
        "X-ray observations of unidentified H.E.S.S. {gamma}-ray sources".  United States.  https://doi.org/10.1063/1.2757329.

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@article{osti_21067239,

  title        = {X-ray observations of unidentified H.E.S.S. {gamma}-ray sources},

  author       = {Funk, S},

  abstractNote = {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 {gamma}-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 behaviour 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 programme to investigate VHE {gamma}-ray sources with high-sensitivity X-ray instruments.},

  doi          = {10.1063/1.2757329},

  url          = {https://www.osti.gov/biblio/21067239},
  journal      = {AIP Conference Proceedings},

  issn         = {0094-243X},

  number       = 1,

  volume       = 921,

  place        = {United States},

  year         = {Thu Jul 12 00:00:00 EDT 2007},

  month        = {Thu Jul 12 00:00:00 EDT 2007}

}

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