The GeV-TeV Connection in Galactic gamma-ray Sources

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Recent observations by atmospheric Cherenkov telescopes such as H.E.S.S. and MAGIC have revealed a large number of new sources of very-high-energy (VHE) gamma-rays above 100 GeV, mostly concentrated along the Galactic plane. At lower energies (100 MeV - 10 GeV) the satellite-based instrument EGRET revealed a population of sources clustering along the Galactic Plane. Given their adjacent energy bands a systematic correlation study between the two source classes seems appropriate. While only a few of the sources connect, both in terms of positional coincidence and spectral consistency, most of the detections occur only in one or the other energy domain. ... continued below

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36 pages

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Funk, S.; Reimer, O.; Torres, Diego F. & Hinton, J. A. September 28, 2007.

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Recent observations by atmospheric Cherenkov telescopes such as H.E.S.S. and MAGIC have revealed a large number of new sources of very-high-energy (VHE) gamma-rays above 100 GeV, mostly concentrated along the Galactic plane. At lower energies (100 MeV - 10 GeV) the satellite-based instrument EGRET revealed a population of sources clustering along the Galactic Plane. Given their adjacent energy bands a systematic correlation study between the two source classes seems appropriate. While only a few of the sources connect, both in terms of positional coincidence and spectral consistency, most of the detections occur only in one or the other energy domain. In these cases, for the first time consistent upper limits in the other energy band have been derived. Here, the populations of Galactic sources in both energy domains are characterized on observational as well as on theoretical grounds, followed by an interpretation on their similarities and differences. The observational data at this stage suggest rather different major source populations at GeV and TeV energies. With regards to preparations for the upcoming GLAST mission that will cover the energy range bridging GeV and TeV instruments this paper investigates the connection between the population of sources in these bands and concludes with predictions for commonly observable sources for GLAST-LAT detections.

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36 pages

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  • Journal Name: Submitted to Astrophysical Journal

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  • Report No.: SLAC-PUB-12835
  • Grant Number: AC02-76SF00515
  • DOI: 10.1086/516567 | External Link
  • Office of Scientific & Technical Information Report Number: 917263
  • Archival Resource Key: ark:/67531/metadc883150

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  • September 28, 2007

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • July 26, 2017, 11:15 a.m.

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Funk, S.; Reimer, O.; Torres, Diego F. & Hinton, J. A. The GeV-TeV Connection in Galactic gamma-ray Sources, article, September 28, 2007; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc883150/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.