Multiwavelength Observations of a TeV-Flare from W Comae

Details Multiwavelength Observations of a TeV-Flare from W Comae Multiwavelength Observations of a TeV-Flare from W Comae

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...707..612a&link_type=abstract

The Astrophysical Journal, Volume 707, Issue 1, pp. 612-620 (2009).

Astronomy and Astrophysics

Astronomy

33

Bl Lacertae Objects: Individual: W Com, Gamma Rays: Observations

Scientific paper

We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z = 0.102) during a strong outburst of very high energy gamma-ray emission in 2008 June. The very high energy gamma-ray signal was detected by VERITAS on 2008 June 7-8 with a flux F(>200 GeV) =(5.7 ± 0.6) × 10-11 cm-2 s-1, about three times brighter than during the discovery of gamma-ray emission from W Com by VERITAS in 2008 March. The initial detection of this flare by VERITAS at energies above 200 GeV was followed by observations in high-energy gamma rays (AGILE; E γ>= 100 MeV), X-rays (Swift and XMM-Newton), and at UV, and ground-based optical and radio monitoring through the GASP-WEBT consortium and other observatories. Here we describe the multiwavelength data and derive the spectral energy distribution of the source from contemporaneous data taken throughout the flare.

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