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Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38. / Otero-Santos, J.; Acosta-Pulido, J. A.; Becerra González, J.; Raiteri, C. M.; Larionov, V. M.; Peñil, P.; Smith, P. S.; Ballester Niebla, C.; Borman, G.A.; Carnerero, M. I.; Castro Segura, N.; Grishina, T. S.; Kopatskaya, E. N.; Larionova, E. G.; Morozova, D. A.; Nikiforova, A. A.; Savchenko, S. S.; Troitskaya, Yu. V.; Troitsky, I.S.; Vasilyev, A. A.; Villata, M.

In: Monthly Notices of the Royal Astronomical Society, Vol. 492, No. 4, 03.2020, p. 5524-5539.

Research output: Contribution to journal › Article › peer-review

Harvard

Otero-Santos, J, Acosta-Pulido, JA, Becerra González, J, Raiteri, CM, Larionov, VM, Peñil, P, Smith, PS, Ballester Niebla, C, Borman, GA, Carnerero, MI, Castro Segura, N, Grishina, TS, Kopatskaya, EN, Larionova, EG, Morozova, DA, Nikiforova, AA, Savchenko, SS, Troitskaya, YV, Troitsky, IS, Vasilyev, AA & Villata, M 2020, 'Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38', Monthly Notices of the Royal Astronomical Society, vol. 492, no. 4, pp. 5524-5539. https://doi.org/10.1093/mnras/staa134

APA

Otero-Santos, J., Acosta-Pulido, J. A., Becerra González, J., Raiteri, C. M., Larionov, V. M., Peñil, P., Smith, P. S., Ballester Niebla, C., Borman, G. A., Carnerero, M. I., Castro Segura, N., Grishina, T. S., Kopatskaya, E. N., Larionova, E. G., Morozova, D. A., Nikiforova, A. A., Savchenko, S. S., Troitskaya, Y. V., Troitsky, I. S., ... Villata, M. (2020). Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38. Monthly Notices of the Royal Astronomical Society, 492(4), 5524-5539. https://doi.org/10.1093/mnras/staa134

Vancouver

Otero-Santos J, Acosta-Pulido JA, Becerra González J, Raiteri CM, Larionov VM, Peñil P et al. Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38. Monthly Notices of the Royal Astronomical Society. 2020 Mar;492(4):5524-5539. https://doi.org/10.1093/mnras/staa134

Author

Otero-Santos, J. ; Acosta-Pulido, J. A. ; Becerra González, J. ; Raiteri, C. M. ; Larionov, V. M. ; Peñil, P. ; Smith, P. S. ; Ballester Niebla, C. ; Borman, G.A. ; Carnerero, M. I. ; Castro Segura, N. ; Grishina, T. S. ; Kopatskaya, E. N. ; Larionova, E. G. ; Morozova, D. A. ; Nikiforova, A. A. ; Savchenko, S. S. ; Troitskaya, Yu. V. ; Troitsky, I.S. ; Vasilyev, A. A. ; Villata, M. / Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38. In: Monthly Notices of the Royal Astronomical Society. 2020 ; Vol. 492, No. 4. pp. 5524-5539.

BibTeX

@article{7224c898cba14bdabfe865777c250a85,
title = "Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38",
abstract = "We report on quasi-periodic variability found in two blazars included in the Steward Observatory Blazar Monitoring data sample: the BL Lac object 3C 66A and the Flat Spectrum Radio Quasar B2 1633+38. We collect optical photometric and polarimetric data in V and R bands of these sources from different observatories: St. Petersburg University, Crimean Astrophysical Observatory, WEBT-GASP, Catalina Real-Time Transient Survey, Steward Observatory, STELLA Robotic Observatory, and Katzman Automatic Imaging Telescope. In addition, an analysis of the γ-ray light curves from Fermi-LAT is included. Three methods are used to search for any periodic behaviour in the data: the Z-transform Discrete Correlation Function, the Lomb-Scargle periodogram and the Weighted Wavelet Z-transform. We find pieces of evidence of possible quasi-periodic variability in the optical photometric data of both sources with periods of ˜3 yr for 3C 66A and ˜1.9 yr for B2 1633+38, with significances between 3σ and 5σ. Only B2 1633+38 shows evidence of this behaviour in the optical polarized data set at a confidence level of 2σ-4σ. This is the first reported evidence of quasi-periodic behaviour in the optical light curve of B2 1633+38. Also, a hint of quasi-periodic behaviour is found in the γ-ray light curve of B2 1633+38 with a confidence level ≥2σ, while no periodicity is observed for 3C 66A in this energy range. We propose different jet emission models that could explain the quasi-periodic variability and the differences found between these two sources.",
keywords = "galaxies: active, BL Lacertae objects: general, BL Lacertae objects: individual (3C 66A, B2 1633+38), galaxies: nuclei, HELICAL JETS, TELESCOPE, SPECTRAL VARIABILITY, RADIO OUTBURSTS, LONG-TERM VARIABILITY, BL LACERTAE, BLACK-HOLE BINARY, INTRADAY VARIABILITY, ACCRETION, BL Lacertae objects: individual (3C 66A, B2 1633+38), RELATIVISTIC MAGNETOHYDRODYNAMIC SIMULATIONS",
author = "J. Otero-Santos and Acosta-Pulido, {J. A.} and {Becerra Gonz{\'a}lez}, J. and Raiteri, {C. M.} and Larionov, {V. M.} and P. Pe{\~n}il and Smith, {P. S.} and {Ballester Niebla}, C. and G.A. Borman and Carnerero, {M. I.} and {Castro Segura}, N. and Grishina, {T. S.} and Kopatskaya, {E. N.} and Larionova, {E. G.} and Morozova, {D. A.} and Nikiforova, {A. A.} and Savchenko, {S. S.} and Troitskaya, {Yu. V.} and I.S. Troitsky and Vasilyev, {A. A.} and M. Villata",
year = "2020",
month = mar,
doi = "10.1093/mnras/staa134",
language = "English",
volume = "492",
pages = "5524--5539",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Wiley-Blackwell",
number = "4",

}

RIS

TY - JOUR

T1 - Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38

AU - Otero-Santos, J.

AU - Acosta-Pulido, J. A.

AU - Becerra González, J.

AU - Raiteri, C. M.

AU - Larionov, V. M.

AU - Peñil, P.

AU - Smith, P. S.

AU - Ballester Niebla, C.

AU - Borman, G.A.

AU - Carnerero, M. I.

AU - Castro Segura, N.

AU - Grishina, T. S.

AU - Kopatskaya, E. N.

AU - Larionova, E. G.

AU - Morozova, D. A.

AU - Nikiforova, A. A.

AU - Savchenko, S. S.

AU - Troitskaya, Yu. V.

AU - Troitsky, I.S.

AU - Vasilyev, A. A.

AU - Villata, M.

PY - 2020/3

Y1 - 2020/3

N2 - We report on quasi-periodic variability found in two blazars included in the Steward Observatory Blazar Monitoring data sample: the BL Lac object 3C 66A and the Flat Spectrum Radio Quasar B2 1633+38. We collect optical photometric and polarimetric data in V and R bands of these sources from different observatories: St. Petersburg University, Crimean Astrophysical Observatory, WEBT-GASP, Catalina Real-Time Transient Survey, Steward Observatory, STELLA Robotic Observatory, and Katzman Automatic Imaging Telescope. In addition, an analysis of the γ-ray light curves from Fermi-LAT is included. Three methods are used to search for any periodic behaviour in the data: the Z-transform Discrete Correlation Function, the Lomb-Scargle periodogram and the Weighted Wavelet Z-transform. We find pieces of evidence of possible quasi-periodic variability in the optical photometric data of both sources with periods of ˜3 yr for 3C 66A and ˜1.9 yr for B2 1633+38, with significances between 3σ and 5σ. Only B2 1633+38 shows evidence of this behaviour in the optical polarized data set at a confidence level of 2σ-4σ. This is the first reported evidence of quasi-periodic behaviour in the optical light curve of B2 1633+38. Also, a hint of quasi-periodic behaviour is found in the γ-ray light curve of B2 1633+38 with a confidence level ≥2σ, while no periodicity is observed for 3C 66A in this energy range. We propose different jet emission models that could explain the quasi-periodic variability and the differences found between these two sources.

AB - We report on quasi-periodic variability found in two blazars included in the Steward Observatory Blazar Monitoring data sample: the BL Lac object 3C 66A and the Flat Spectrum Radio Quasar B2 1633+38. We collect optical photometric and polarimetric data in V and R bands of these sources from different observatories: St. Petersburg University, Crimean Astrophysical Observatory, WEBT-GASP, Catalina Real-Time Transient Survey, Steward Observatory, STELLA Robotic Observatory, and Katzman Automatic Imaging Telescope. In addition, an analysis of the γ-ray light curves from Fermi-LAT is included. Three methods are used to search for any periodic behaviour in the data: the Z-transform Discrete Correlation Function, the Lomb-Scargle periodogram and the Weighted Wavelet Z-transform. We find pieces of evidence of possible quasi-periodic variability in the optical photometric data of both sources with periods of ˜3 yr for 3C 66A and ˜1.9 yr for B2 1633+38, with significances between 3σ and 5σ. Only B2 1633+38 shows evidence of this behaviour in the optical polarized data set at a confidence level of 2σ-4σ. This is the first reported evidence of quasi-periodic behaviour in the optical light curve of B2 1633+38. Also, a hint of quasi-periodic behaviour is found in the γ-ray light curve of B2 1633+38 with a confidence level ≥2σ, while no periodicity is observed for 3C 66A in this energy range. We propose different jet emission models that could explain the quasi-periodic variability and the differences found between these two sources.

KW - galaxies: active

KW - BL Lacertae objects: general

KW - BL Lacertae objects: individual (3C 66A

KW - B2 1633+38)

KW - galaxies: nuclei

KW - HELICAL JETS

KW - TELESCOPE

KW - SPECTRAL VARIABILITY

KW - RADIO OUTBURSTS

KW - LONG-TERM VARIABILITY

KW - BL LACERTAE

KW - BLACK-HOLE BINARY

KW - INTRADAY VARIABILITY

KW - ACCRETION

KW - BL Lacertae objects: individual (3C 66A, B2 1633+38)

KW - RELATIVISTIC MAGNETOHYDRODYNAMIC SIMULATIONS

UR - http://www.mendeley.com/catalogue/quasiperiodic-behaviour-optical-%CE%B3ray-light-curves-blazars-3c-66a-b2-163338

U2 - 10.1093/mnras/staa134

DO - 10.1093/mnras/staa134

M3 - Article

VL - 492

SP - 5524

EP - 5539

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -

ID: 51735136