Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.3206c&link_type=abstract
American Astronomical Society, AAS Meeting #211, #32.06; Bulletin of the American Astronomical Society, Vol. 39, p.784
Astronomy and Astrophysics
Astronomy
Scientific paper
The giant radio galaxy M87 is the only extragalactic non-blazar object which has been detected as a source of very high energy gamma-rays. Because of its proximity ( 16 Mpc), it represents a unique opportunity to study in detail the processes occurring in Active Galactic Nuclei from radio to TeV gamma-rays.
In this talk we will report the detection of gamma-ray emission above 250 GeV from M87 in spring 2007 with the VERITAS imaging atmospheric Cherenkov telescope array. We will show the energy spectrum and compare our result to the previous observations with HEGRA and HESS. We will also discuss the X-ray gamma-ray correlation and show strong evidence for a year scale correlation. These results have strong implications for the gamma-ray emitting region in M87.
Colin Pierre
VERITAS Collaboration
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