Quasar S5 0836+710 active in near-infrared and optical bands
ATel #8272; V. M. Larionov (St. Petersburg University and Pulkovo Observatory), A. A. Arkharov, N. V. Efimova, S. A. Klimanov (Pulkovo Observatory), A. Di Paola (INAF-Rome)
on 11 Nov 2015; 13:15 UT
Credential Certification: V. Larionov (vlar@astro.spbu.ru)
Subjects: Infra-Red, Optical, AGN, Blazar, Quasar
As reported in ATels #8223, #8266, #8271, quasar S5 0836+710 (4C 71.07) is in enhanced state of activity. We perform optical and near-infrared monitoring of this object using 40-cm LX-200 (optical, St.Petersburg, Russia), 70-cm AZT-8 (optical, Crimea) and 1.1-m AZT-24 (near-infrared, Campo Imperatore, Italy), as a part of WEBT/GASP project. We report that S5 0836+710 demonstrates enhanced activity during last several weeks both in optical (see R band light curve) and in near-infrared bands (J band light curve). We notice that in NIR its brightness decreased from J=15.20 (2015 Nov.09, TJD 57336.6179 ) to J=15.51 (Nov.10, TJD 57337.4675 ), thus demonstrating fast inter-night variations.
