Multi-band photometry of the flaring blazar B2 1420+32 at its peak
ATel #13421; Milen Minev (University of Sofia, Bulgaria), Alexander Kurtenkov (Institute of Astronomy and NAO, BAS, Bulgaria), Evgeni Ovcharov (University of Sofia, Bugaria)
on 26 Jan 2020; 19:16 UT
Credential Certification: Kiril Stoyanov (kstoyanov@astro.bas.bg)
Subjects: Optical, AGN, Blazar, Quasar
We confirm the strong ongoing flare of blazar B2 1420+32 = OQ 334 (ATel #13417, #13412, #13382) in the optical region. Photometric observations with the FoReRo2 focal reducer of the 2m RCC telescope at Rozhen NAO (Bulgaria) produced the following magnitudes:
# Date, UT U errU B errB V errV R errR I errI
2020 Jan 24.13 14.44 0.03 15.01 0.03 14.59 0.03 14.16 0.01 13.58 0.02
2020 Jan 25.11 14.22 0.03 14.81 0.03 14.42 0.03 13.99 0.02 13.45 0.02
2020 Jan 26.11 14.82 0.03 15.36 0.03 14.92 0.03 14.46 0.02 13.87 0.02
Each UBVRI estimate was completed within a 30 min interval. Field stars from the SDSS DR12 catalog were used for photometric calibration after applying the transformation equations by Lupton (2005). Intra-night variability of the order of 0.1 mag in B-band was detected during the maximum on Jan 25 with the 50/70 cm Schmidt telescope at Rozhen NAO.
This work was supported in part by the NSF Bulgaria grant DN18/10-11.12.2017, Ministry of Education and Science of the Republic of Bulgaria, National RI Roadmap Project DO1-277/16.12.2019.
