Target of opportunity observations of flaring blazars with VERITAS

Details Target of opportunity observations of flaring blazars with VERITAS Target of opportunity observations of flaring blazars with VERITAS

2011-10-05

arxiv.org/abs/1110.1028v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, to appear in proceedings of the 32nd ICRC, Beijing, China

Scientific paper

VERITAS is an array of four imaging atmospheric Cherenkov telescopes that observes gamma-ray sources in the very high energy range (VHE, E>100 GeV). A large fraction of the known gamma-ray sources are of extragalactic origin and belong to the blazar class: active galactic nuclei with relativistic jets pointing along the line of sight. Gamma-ray emission from blazars is typically variable. Part of the VERITAS observation program is devoted to follow-up triggers on flaring blazars, initiated by observations at other wavelengths. We will present those target of opportunity observations based on optical and GeV (Fermi-LAT) alerts performed with VERITAS during the past 2 seasons, and discuss the results in a multiwavelength context.

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