Россия
Россия
Россия
УДК 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
УДК 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
УДК 52-6 Излучение и связанные с ним процессы
УДК 524.7-7 Характер излучения
УДК 524.7-1/-8 Свойства, процессы, части внегалактических систем
ГРНТИ 41.17 Астрофизика
ГРНТИ 41.27 Звездные системы
ГРНТИ 41.51 Обсерватории. Инструменты, приборы и методы астрономических наблюдений
ОКСО 03.05.01 Астрономия
ОКСО 03.06.01 Физика и астрономия
ББК 223 Физика
ТБК 6143 Астрофизика. Радиоастрономия
BISAC SCI004000 Astronomy
We present the results of a daily monitoring of blazars observed in survey mode with the RATAN-600 Western Sector in 2018-2019. Twelve blazars were observed in the survey in 2018-2019 at the declination of the Crab Pulsar. The light curves of these objects at 4.7 GHz were measured. All the sources but one showed a variability level below 15%. The flux density of the blazar B2 1324+22 increased by a factor of two during the observing year. In 2019-2020, during a generally active state, a monitoring of the blazar PKS 1614+051 was conducted at 2.3 and 4.7 GHz. The flux density variability level was low ($\sim$ 3%) at both frequencies. At 4.7 GHz the source was variable on a timescale of 25 days in its reference frame. A daily monitoring of the blazar AO 0235+164 was carried out at 2.3 and 4.7 GHz in 2021-2022. The light curves showed three repeating flares with a timescale of 57 days, and a periodicity of 52 days in the source's frame was found at 4.7 GHz.
active galaxies: blazars; radio continuum
1. Ahumada R., Allende Prieto C., Almeida A., et al., 2020, The Astrophysical Journal Supplement Series, 249, id. 3
2. Aller M., Aller H., Hughes P., et al., 1992, Astrophysical Journal, 399, id. 16 DOI: https://doi.org/10.1086/171898
3. Cohen R.D., Smith H.E., Junkkarinen V.T., et al., 1987, Astrophysical Journal, 318, p. 577 DOI: https://doi.org/10.1086/165393
4. D’Abrusco R., Massaro F., Paggi et al., 2014, The Astrophysical Journal Supplement, 215, id. 14 DOI: https://doi.org/10.1088/0067-0049/215/1/14
5. D’Abrusco R., A lvarez Crespo N., Massaro F., et al., 2019, The Astrophysical Journal Supplement Series, 242, 1, id. 4 DOI: https://doi.org/10.3847/1538-4365/ab16f4
6. Dallacasa D., Stanghellini C., Centonza M., et al., 2000, Astronomy and Astrophysics, 363, p. 887
7. Gaia Collaboration, Vallenari A., Brown A.G.A., 2023, Astronomy and Astrophysics, 674, id. A1
8. Healey S.E., Romani R.W., Cotter G., et al., 2008, The Astrophysical Journal Supplement Series, 175, p. 97 DOI: https://doi.org/10.1086/523302
9. Higley A.N., Lyke B.W., Myers A.D., et al., 2020, American Astronomical Society, 235, id. 219.03
10. Kolmogorov A.N., 1941, Doklady Akademii Nauk CCCP, 30, p. 299
11. Kudryashova A.A., Bursov N.N., Trushkin S.A., 2024, Astrophysical Bulletin, 79, p. 36 DOI: https://doi.org/10.1134/S1990341324700263; EDN: https://elibrary.ru/KPPTLN
12. Kutkin A.M., Pashchenko I.N., Lisakov M.M., et al., 2018, Monthly Notices of the Royal Astronomical Society, 475, p. 4994 DOI: https://doi.org/10.1093/MNRAS/STY144; EDN: https://elibrary.ru/XXWKRV
13. Massaro E., Giommi P., Leto C., et al., 2009, Astronomy and Astrophysics, 495, p. 691 DOI: https://doi.org/10.1051/0004-6361:200810161
14. O’Dea C.P., 1990, Monthly Notices of the Royal Astronomical Society, 245
15. Simonetti J.H., Cordes J.M., Heeschen D.S., 1985, Astrophysical Journal, 296, p. 46 DOI: https://doi.org/10.1086/163418
16. Sotnikova Yu., Mikhailov A., Mufakharov T., et al., 2021, Monthly Notices of the Royal Astronomical Society, 508, 2, p. 2798 DOI: https://doi.org/10.1093/mnras/stab2114
17. Vlasyuk V.V., Sotnikova Y.V., Volvach A.E., et al., 2024, Monthly Notices of the Royal Astronomical Society, 535, p. 2775 DOI: https://doi.org/10.1093/mnras/stae2491; EDN: https://elibrary.ru/AVTTEO
18. Urry C.M. and Padovani P., 1995, Publications of the Astronomical Society of the Pacific, 107, p. 803 DOI: https://doi.org/10.1086/133630
19. Wilkes B.J., Wright A.E., Jauncey D.L., et al., 1983, Astronomical Society of Australia, Proceedings, 5, 1, p. 2 DOI: https://doi.org/10.1017/S1323358000021664
