Friday, June 19, 2015

BL Lacertae activity at VHE gamma-rays

The MAGIC telescopes have detected Very High Energy gamma-ray flux from BL Lacertae. The preliminary analysis indicates a highly significant signal above 200 GeV. The emission is variable, with a flux of 0.4 and 0.1 times the flux of the Crab nebula above 200 GeV in the nights 14/15 and 16/17, respectively. The flux level is similar to the flaring state reported in Arlen et al. 2013. The observations were triggered by the high activity measured at optical and gamma-ray energies. X-ray ToO observations with the Swift satellite did not show any substantial enhancement in the X-ray flux.
For more information see: http://www.astronomerstelegram.org/?read=7660

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