engleski

VERITAS and MAGIC Report Flaring in Very High Energy Gamma Rays from M87

We report a strong flare in very high energy (VHE ; E > 100 GeV) gamma rays from the radio galaxy M87. M87 is being observed in a coordinated effort in 2010 by the ground-based VHE gamma-ray observatories VERITAS and MAGIC ; this effort is a continuation of the joint monitoring program which was initiated by VERITAS, MAGIC, and HESS in 2008. An increasing VHE gamma-ray flux level has been measured over the past several nights (starting on MJD 55291), reaching a historic high state of about 20% of the flux of the Crab Nebula during last night's observations (MJD 55295). This flare follows a state of low average VHE flux from M87 over the past few months after a flare was reported by MAGIC at the beginning of 2010 (ATel #2431). Observations by the VHE gamma-ray observatories will continue over the coming week. ToO observations with Chandra and the VLBA have been triggered. Observations at other wavelengths are encouraged.

Gamma Ray ; >GeV ; Request for Observations ; AGN

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