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.
