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Optical unprecedented high brightness level of blazar PKS 1510-08

ATEL # 2045; V.M.Larionov, T.S.Konstantinova, D.A.Blinov (Astronomical Institute, St.Petersburg University, Russia)
on 9 May 2009; 16:23 UT
Password Certification: V.Larionov (

Subjects: Optical, AGN, Quasars

With reference to ATEL #2033, ATEL #1990 and references therein on the gamma-ray and optical brightening of the blazar PKS 1510-08, we report that the source is still at very active optical state, brightening by 2 magnitudes during last 3 days and reaching R=13.600.02 on May 08.9, that is 0.8 magnitudes brighter than its previous record level of March 27. Our preliminary light curve can be found at . Simultaneously, its optical polarization have grown from 2% to 30%. Observations at all wavelengths are strongly encouraged.

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R. E. Rutledge , Editor
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