Unprecedented optical outburst of FSRQ 1633+38 (4C +38.41)
ATel #12025; V. Larionov, S. Savchenko, I. Troitsky, Yu. Troitskaya, T. Grishina, A. Vasilyev and M. Makarova (St. Petersburg University)
on 10 Sep 2018; 14:11 UT
Credential Certification: V. Larionov (vlar@astro.spbu.ru)
Subjects: Optical, AGN, Blazar, Quasar
We perform optical photometric and polarimetric monitoring of a sample of gamma-bright blazars using 0.4-m LX-200 telescope (St.Petersburg) and 0.7-m AZT-8 telescope (Crimean Astrophysical Observatory), as a part of WEBT/GASP project. We report that the blazar 1633+38 reached R=15.00 in the night of 2018 September 9, TJD 58371.29. This is a brightest value during the whole time interval of our observations since 2006. R band light curve for 1633+38 can be seen on our web-page. The polarization degree is on the level of 15%. We mention that this fast brightening seems to have occurred with a noticeable (~1 weak) delay after gamma-ray outburst reported by the AGILE team (see ATel#12005). Current high activity state of this blazar deserves close attention in all wavelengths.
