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Optical brightening of BL Lacertae observed on 26 October and 02 November 2022

ATel #15749; Ashwani Pandey, Jayesh Sarswat, Ravi Joshi, Vivek Jha, Kiran Wani (Vainu Bappu Observatory, Indian Institute of Astrophysics)
on 9 Nov 2022; 11:54 UT
Credential Certification: Ashwani Pandey (ashwanitapan@gmail.com)

Subjects: Optical, AGN, Blazar

We report on the optical follow-up multi-band (B, V, R, and I) observations of the flaring blazar BL Lacertae taken on October 26, 2022, and November 2, 2022, using the 30-inch telescope at Vainu Bappu Observatory (VBO), Indian Institute of Astrophysics (IIA), Bengaluru and the 1.04-m Sampurnanand Telescope, ARIES, India, respectively. The source showed an increase in its optical brightness with its average R-magnitude changes from 11.94 to 11.29 showing that the source is still in the flaring state. The results of the preliminary data analysis are given below. Date: October 26, 2022 Telescope: 30-inch telescope at IIA VBO, Kavalur. JD=2459879.1562500 V=12.37 JD=2459879.1645833 V=12.40 JD=2459879.1152778 B=13.81 JD=2459879.1250000 B=13.49 JD=2459879.1381944 R=11.77 JD=2459879.1465278 R=11.74 JD=2459879.2027778 R=11.89 JD=2459879.2111111 R=11.75 JD=2459879.2256944 R=12.37 JD=2459879.2340278 R=12.10 JD=2459879.2430556 R=11.99 JD=2459879.1729167 I=11.15 JD=2459879.1812500 I=11.22 Date: November 2, 2022 Telescope: 1.04-m telescope at ARISE, Nainital. JD=2459886.1409474 V=12.16 JD=2459886.141363 V=12.18 JD=2459886.141779 V=12.04 JD=2459886.1435423 R=11.33 JD=2459886.1439596 R=11.28 JD=2459886.1443758 R=11.27 JD=2459886.1453366 I=10.52 JD=2459886.1457534 I=10.54 JD=2459886.1461703 I=10.61 We'll continue monitoring this source.