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ATEL # 1755; V. M. Larionov (Astronomical Institute, St.-Petersburg State University, Russia, and Pulkovo Observatory, Russia), M. Villata and C. M. Raiteri (INAF, Osservatorio Astronomico di Torino, Italy), D. Gorshanov, T. S. Konstantinova, E. N. Kopatskaya, and L. Larionova (Astronomical Institute, St.-Petersburg State University, Russia, and Pulkovo Observatory, Russia), W. P. Chen and E. Koptelova (Institute of Astronomy, National Central University, Taiwan), for the GASP Collaboration
on 2 Oct 2008; 13:36 UT
Password Certification: Claudia M. Raiteri (email@example.com)
Subjects: Infra-Red, Optical, AGN
Referred to by ATEL #: 1759
With reference to ATel #1753 announcing the detection of >100 GeV gamma-ray emission from the blazar 3C 66A in September 25 – October 1, the GLAST-AGILE Support Program (GASP) of the Whole Earth Blazar Telescope (WEBT) reports on the observation of an optical and near-IR brightening of the source occurred in the same period: from R ~ 14.3 on September 24 to R ~ 13.7 on September 30, while the J mag varied from about 12.8 to 12.3.