Ground-based γ-ray astronomy has become an active astrophysical discipline with four confirmed sources of TeV γ-rays, two plerionic supernova remnants (SNRs) and two BL Lac objects (BL Lacs). An additional nine objects (one plerion, three shell-type SNRs, one X-ray binary, and four BL Lacs) have been detected but have not been confirmed by independent detections. None of the galactic sources require the presence of hadronic cosmic rays, so definitive evidence of their origin remains elusive. Mrk 421 and Mrk 501 are weak EGRET sources but they exhibit extremely variable TeV emission with spectra that extend beyond 10 TeV. They also exhibit correlations with lower energy photons during multi-wavelength campaigns, providing tests of emission models. Next generation telescopes like VERITAS hold the promise of moving this field dramatically forward.
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12 April 2000
THE FIFTH COMPTON SYMPOSIUM
15-17 Sep 1999
Portsmouth, New Hampshire (USA)
Research Article|
April 12 2000
Ground-based gamma-ray astronomy
Michael Catanese
Michael Catanese
Iowa State University, Department of Physics and Astronomy, Ames, Iowa 50011
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AIP Conf. Proc. 510, 619–626 (2000)
Citation
Michael Catanese; Ground-based gamma-ray astronomy. AIP Conf. Proc. 12 April 2000; 510 (1): 619–626. https://doi.org/10.1063/1.1303276
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