Rapid fading of the blazar S4 0954+65
ATel #15522; E. Zaharieva (Sofia University, Bulgaria), S. Kalaydjieva, F. Kolev, G. Doncheva, M. Iliev, M. Penkova, E. Ovcharov (Sofia University, Bulgaria), M. Minev (Sofia University, Bulgaria)
on 22 Jul 2022; 20:18 UT
Credential Certification: Evgeni Ovcharov (evgeni@phys.uni-sofia.bg)
After the report of the flaring AGN S4 0954+65 (ATel #15517) we obtain decreasing of the brightness by 0.7 mag for 24 hours.
The images were obtained with a 20 cm Newton telescope + AtikOne 6.0 at Space and Earth Sciences Summer School "Prof. Marin Bachevarov", Osogovo mountain, Bulgaria. The R-band magnitudes are:
JD 2459781.3689 14.326 ± 0.013
JD 2459781.3697 14.371 ± 0.012
JD 2459781.3705 14.419 ± 0.017
JD 2459781.3713 14.371 ± 0.018
JD 2459781.3721 14.404 ± 0.016
JD 2459781.3734 14.439 ± 0.017
JD 2459781.3739 14.344 ± 0.019
JD 2459781.3743 14.393 ± 0.025
JD 2459781.3748 14.357 ± 0.025
JD 2459781.3752 14.381 ± 0.017
JD 2459781.3757 14.442 ± 0.020
JD 2459781.3761 14.397 ± 0.023
JD 2459782.3523 14.991 ± 0.029
JD 2459782.3527 14.907 ± 0.031
JD 2459782.3532 15.025 ± 0.029
The observations and image processing are carried out during the ongoing student Space and Earth Sciences Summer School "Prof. Marin Bachevarov" at Osogovo mountain, Bulgaria, organized by Department of Astronomy, Sofia University.
The work was partially supported by NSF Bulgaria grant DN18/10-11.12.2017 and the Ministry of Education and Science of the Republic of Bulgaria, National RI Roadmap Project DO1-383/18.12.2020.
