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An increase of Optical Activity in the Quasar 3C454.3

ATel #9150; Svetlana Jorstad (IAR, Boston U., Boston, USA & St. Petersburg State U., St. Petersburg, Russia)
on 14 Jun 2016; 04:57 UT
Credential Certification: Svetlana Jorstad (jorstad@bu.edu)

Subjects: Optical, X-ray, Gamma Ray

Referred to by ATel #: 9157, 9176, 9178, 9190, 9192, 9723

The quasar 3C454.3 shows an increase of the optical activity during the last three nights. According to our observations at the Perkins telescope of the Lowell Observatory (Flagstaff, AZ) the brightness of the source on June 10 (JD 2457549.8770) in R band was 15.817+-0.018 with a of polarization of 2.27+-0.39%. On June 12 the brightness and degree of polarization increased significantly (R= 15.262+-0.018 and P=13.00+-0.25%) and the last night a new increase of the brightness is observed (R=14.958+-0.020). We encourage multi-wavelength observations of the quasar, well known for its dramatic variability and a good correlation between variations at different wavelengths from gamma-ray to mm-waves.