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blazar

Special Notice #407: Blazar S5 1803+78 active

September 2, 2015:  AAVSO observer Adolfo Darriba Martinez y Oscar Ortuño (DAM, Observatorio Las Casqueras, Madrid, Spain) reports that the blazar S5 1803+78 has brightened significantly.

S5 1803+78, which is magnitude 16-17 V at minimum, is currently magnitude 14.237 V (LPAB, P. Lampens-Vancauteren (Ukkel, Belgium).

Previous outbursts are recorded in the AAVSO International Database in November 2007, February 2012, and September 2014.

Special Notice #396: Blazar PKS 0716+71 in very bright outburst

January 19, 2015: The blazar PKS 0716+71 == S5 0716+71 is currently in a very bright active state, at a visual magnitude of 12.1 as observed by G. Poyner on 2015 January 19.212 (JD 2457041.712).  The object was first noted in outburst by Arkharov et al.

Special Notice #194: Request for monitoring of the blazar 3C 66A

February 9, 2010: The blazar 3C 66A has been steadily brightening in the optical for the past few hundred days, and is now at or near the bright limits of the AAVSO records for this object. The most recent observations put 3C 66A near V=13.9: m(vis)=13.8, JD 2455234.361 (2010 Feb 06.861; G. Poyner, Birmingham, England); m(V)=13.88, JD 2455235.566 (Feb 08.066; R. Campbell, Largo, Florida, USA); m(V)=13.90, JD 2455235.740 (Feb 08.240; R. Campbell).

Special Notice #223: BL Lac object 3C 454.3 undergoing bright flare

November 18, 2010: As was noted by AAVSO observer E. Erdelyi (Carlsbad, CA, USA) in a post to cvnet-discussion, the BL Lac object 3C 454.3 (AUID 000-BDC-612) appears to be undergoing a bright flare; the object was recorded by Erdelyi at V=13.659(0.013) on 2010 November 10.2708 (JD 2455510.7708). The last flare of comparable brightness was observed in 2007, when the object reached V ~ 13.4 around JD 2454335 (late August 2007).

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