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Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales. / Dogra, Karan; Gupta, Alok C.; Raiteri, C. M.; Villata, M.; Wiita, Paul J.; Kurtanidze, S. O.; Jorstad, S. G.; Bachev, R.; Damljanovic, G.; Lorey, C.; Savchenko, S. S.; Vince, O.; Abdelkareem, M.; Aceituno, F. J.; Acosta-Pulido, J. A.; Agudo, I.; Andreuzzi, G.; Ata, S. A.; Baida, G. V.; Barbieri, L.; Blinov, D. A.; Bonnoli, G.; Borman, G. A.; Carnerero, M. I.; Carosati, D.; Casanova, V.; Cui, Lang; Elhosseiny, E. G.; Elsaesser, D.; Escudero, J.; Feige, M.; Gazeas, K.; Gennadievna, L. E.; Grishina, T. S.; Gu, Minfeng; Hagen-Thorn, V. A.; Hemrich, F.; Hsiao, H. Y.; Ivanidze, R. Z.; Jovanovic, M. D.; Kamel, T. M.; Kimeridze, G. N.; Kopatskaya, E. N.; Kuberek, D.; Kurtanidze, O. M.; Kurtenkov, A.; Larionov, V. M.; Larionova, L. V.; Liao, M.; Mannheim, K.; Marchini, A.; Marinelli, C.; Marscher, A. P.; Morcuende, D.; Morozova, D. A.; Nikolashvili, M. G.; Reinhart, D.; Santos, J. O.; Scherbantin, A.; Semkov, E.; Shishkina, E. V.; Sigua, L. A.; Sota, A.; Steineke, R.; Strigachev, A.; Takey, A.; Tawfeek, Amira A.; Troitskiy, I. S.; Troitskaya, Y. V.; Tsai, An-Li; Vasilyev, A. A.; Vrontaki, K.; Zhang, Zhongli; Zhovtan, A. V.; Zottmann, N.; Zuo, Wenwen.

In: The Astrophysical Journal Supplement Series, Vol. 276, No. 1, 1, 09.12.2024.

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

Harvard

Dogra, K, Gupta, AC, Raiteri, CM, Villata, M, Wiita, PJ, Kurtanidze, SO, Jorstad, SG, Bachev, R, Damljanovic, G, Lorey, C, Savchenko, SS, Vince, O, Abdelkareem, M, Aceituno, FJ, Acosta-Pulido, JA, Agudo, I, Andreuzzi, G, Ata, SA, Baida, GV, Barbieri, L, Blinov, DA, Bonnoli, G, Borman, GA, Carnerero, MI, Carosati, D, Casanova, V, Cui, L, Elhosseiny, EG, Elsaesser, D, Escudero, J, Feige, M, Gazeas, K, Gennadievna, LE, Grishina, TS, Gu, M, Hagen-Thorn, VA, Hemrich, F, Hsiao, HY, Ivanidze, RZ, Jovanovic, MD, Kamel, TM, Kimeridze, GN, Kopatskaya, EN, Kuberek, D, Kurtanidze, OM, Kurtenkov, A, Larionov, VM, Larionova, LV, Liao, M, Mannheim, K, Marchini, A, Marinelli, C, Marscher, AP, Morcuende, D, Morozova, DA, Nikolashvili, MG, Reinhart, D, Santos, JO, Scherbantin, A, Semkov, E, Shishkina, EV, Sigua, LA, Sota, A, Steineke, R, Strigachev, A, Takey, A, Tawfeek, AA, Troitskiy, IS, Troitskaya, YV, Tsai, A-L, Vasilyev, AA, Vrontaki, K, Zhang, Z, Zhovtan, AV, Zottmann, N & Zuo, W 2024, 'Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales', The Astrophysical Journal Supplement Series, vol. 276, no. 1, 1. https://doi.org/10.3847/1538-4365/ad8e3d

APA

Dogra, K., Gupta, A. C., Raiteri, C. M., Villata, M., Wiita, P. J., Kurtanidze, S. O., Jorstad, S. G., Bachev, R., Damljanovic, G., Lorey, C., Savchenko, S. S., Vince, O., Abdelkareem, M., Aceituno, F. J., Acosta-Pulido, J. A., Agudo, I., Andreuzzi, G., Ata, S. A., Baida, G. V., ... Zuo, W. (2024). Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales. The Astrophysical Journal Supplement Series, 276(1), [1]. https://doi.org/10.3847/1538-4365/ad8e3d

Vancouver

Dogra K, Gupta AC, Raiteri CM, Villata M, Wiita PJ, Kurtanidze SO et al. Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales. The Astrophysical Journal Supplement Series. 2024 Dec 9;276(1). 1. https://doi.org/10.3847/1538-4365/ad8e3d

Author

Dogra, Karan ; Gupta, Alok C. ; Raiteri, C. M. ; Villata, M. ; Wiita, Paul J. ; Kurtanidze, S. O. ; Jorstad, S. G. ; Bachev, R. ; Damljanovic, G. ; Lorey, C. ; Savchenko, S. S. ; Vince, O. ; Abdelkareem, M. ; Aceituno, F. J. ; Acosta-Pulido, J. A. ; Agudo, I. ; Andreuzzi, G. ; Ata, S. A. ; Baida, G. V. ; Barbieri, L. ; Blinov, D. A. ; Bonnoli, G. ; Borman, G. A. ; Carnerero, M. I. ; Carosati, D. ; Casanova, V. ; Cui, Lang ; Elhosseiny, E. G. ; Elsaesser, D. ; Escudero, J. ; Feige, M. ; Gazeas, K. ; Gennadievna, L. E. ; Grishina, T. S. ; Gu, Minfeng ; Hagen-Thorn, V. A. ; Hemrich, F. ; Hsiao, H. Y. ; Ivanidze, R. Z. ; Jovanovic, M. D. ; Kamel, T. M. ; Kimeridze, G. N. ; Kopatskaya, E. N. ; Kuberek, D. ; Kurtanidze, O. M. ; Kurtenkov, A. ; Larionov, V. M. ; Larionova, L. V. ; Liao, M. ; Mannheim, K. ; Marchini, A. ; Marinelli, C. ; Marscher, A. P. ; Morcuende, D. ; Morozova, D. A. ; Nikolashvili, M. G. ; Reinhart, D. ; Santos, J. O. ; Scherbantin, A. ; Semkov, E. ; Shishkina, E. V. ; Sigua, L. A. ; Sota, A. ; Steineke, R. ; Strigachev, A. ; Takey, A. ; Tawfeek, Amira A. ; Troitskiy, I. S. ; Troitskaya, Y. V. ; Tsai, An-Li ; Vasilyev, A. A. ; Vrontaki, K. ; Zhang, Zhongli ; Zhovtan, A. V. ; Zottmann, N. ; Zuo, Wenwen. / Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales. In: The Astrophysical Journal Supplement Series. 2024 ; Vol. 276, No. 1.

BibTeX

@article{b862c7874e614a6c8b78eaf52264f846,
title = "Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales",
abstract = "Due to its peculiar and highly variable nature, the blazar 3C 454.3 has been extensively monitored by the WEBT team. Here, we present for the first time these long-term optical flux and color variability results using data acquired in B, V, R, and I bands over a time span of about two decades. We include data from WEBT collaborators and public archives such as SMARTS, Steward Observatory, and Zwicky Transient Facility. The data are binned and segmented to study the source over this long term when more regular sampling was available. During our study, the long-term spectral variability reveals a redder-when-brighter trend, which, however, stabilizes at a particular brightness cutoff of ∼14.5 mag in the I band, after which it saturates and evolves into a complex state. This trend indicates increasing dominance of jet emission over accretion disk (AD) emission until jet emission completely dominates. Plots of the variation in spectral index (following F ν ∝ ν −α ) reveal a bimodal distribution using a one-day binning. These correlate with two extreme phases of 3C 454.3, an outburst or high-flux state and a quiescent or low-flux state, which are respectively jet- and AD-dominated. We have also conducted intraday variability studies of nine light curves and found that six of them are variable. Discrete correlation function analysis between different pairs of optical wave bands peaks at zero lags, indicating cospatial emission in different optical bands.",
author = "Karan Dogra and Gupta, {Alok C.} and Raiteri, {C. M.} and M. Villata and Wiita, {Paul J.} and Kurtanidze, {S. O.} and Jorstad, {S. G.} and R. Bachev and G. Damljanovic and C. Lorey and Savchenko, {S. S.} and O. Vince and M. Abdelkareem and Aceituno, {F. J.} and Acosta-Pulido, {J. A.} and I. Agudo and G. Andreuzzi and Ata, {S. A.} and Baida, {G. V.} and L. Barbieri and Blinov, {D. A.} and G. Bonnoli and Borman, {G. A.} and Carnerero, {M. I.} and D. Carosati and V. Casanova and Lang Cui and Elhosseiny, {E. G.} and D. Elsaesser and J. Escudero and M. Feige and K. Gazeas and Gennadievna, {L. E.} and Grishina, {T. S.} and Minfeng Gu and Hagen-Thorn, {V. A.} and F. Hemrich and Hsiao, {H. Y.} and Ivanidze, {R. Z.} and Jovanovic, {M. D.} and Kamel, {T. M.} and Kimeridze, {G. N.} and Kopatskaya, {E. N.} and D. Kuberek and Kurtanidze, {O. M.} and A. Kurtenkov and Larionov, {V. M.} and Larionova, {L. V.} and M. Liao and K. Mannheim and A. Marchini and C. Marinelli and Marscher, {A. P.} and D. Morcuende and Morozova, {D. A.} and Nikolashvili, {M. G.} and D. Reinhart and Santos, {J. O.} and A. Scherbantin and E. Semkov and Shishkina, {E. V.} and Sigua, {L. A.} and A. Sota and R. Steineke and A. Strigachev and A. Takey and Tawfeek, {Amira A.} and Troitskiy, {I. S.} and Troitskaya, {Y. V.} and An-Li Tsai and Vasilyev, {A. A.} and K. Vrontaki and Zhongli Zhang and Zhovtan, {A. V.} and N. Zottmann and Wenwen Zuo",
year = "2024",
month = dec,
day = "9",
doi = "10.3847/1538-4365/ad8e3d",
language = "English",
volume = "276",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
publisher = "IOP Publishing Ltd.",
number = "1",

}

RIS

TY - JOUR

T1 - Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales

AU - Dogra, Karan

AU - Gupta, Alok C.

AU - Raiteri, C. M.

AU - Villata, M.

AU - Wiita, Paul J.

AU - Kurtanidze, S. O.

AU - Jorstad, S. G.

AU - Bachev, R.

AU - Damljanovic, G.

AU - Lorey, C.

AU - Savchenko, S. S.

AU - Vince, O.

AU - Abdelkareem, M.

AU - Aceituno, F. J.

AU - Acosta-Pulido, J. A.

AU - Agudo, I.

AU - Andreuzzi, G.

AU - Ata, S. A.

AU - Baida, G. V.

AU - Barbieri, L.

AU - Blinov, D. A.

AU - Bonnoli, G.

AU - Borman, G. A.

AU - Carnerero, M. I.

AU - Carosati, D.

AU - Casanova, V.

AU - Cui, Lang

AU - Elhosseiny, E. G.

AU - Elsaesser, D.

AU - Escudero, J.

AU - Feige, M.

AU - Gazeas, K.

AU - Gennadievna, L. E.

AU - Grishina, T. S.

AU - Gu, Minfeng

AU - Hagen-Thorn, V. A.

AU - Hemrich, F.

AU - Hsiao, H. Y.

AU - Ivanidze, R. Z.

AU - Jovanovic, M. D.

AU - Kamel, T. M.

AU - Kimeridze, G. N.

AU - Kopatskaya, E. N.

AU - Kuberek, D.

AU - Kurtanidze, O. M.

AU - Kurtenkov, A.

AU - Larionov, V. M.

AU - Larionova, L. V.

AU - Liao, M.

AU - Mannheim, K.

AU - Marchini, A.

AU - Marinelli, C.

AU - Marscher, A. P.

AU - Morcuende, D.

AU - Morozova, D. A.

AU - Nikolashvili, M. G.

AU - Reinhart, D.

AU - Santos, J. O.

AU - Scherbantin, A.

AU - Semkov, E.

AU - Shishkina, E. V.

AU - Sigua, L. A.

AU - Sota, A.

AU - Steineke, R.

AU - Strigachev, A.

AU - Takey, A.

AU - Tawfeek, Amira A.

AU - Troitskiy, I. S.

AU - Troitskaya, Y. V.

AU - Tsai, An-Li

AU - Vasilyev, A. A.

AU - Vrontaki, K.

AU - Zhang, Zhongli

AU - Zhovtan, A. V.

AU - Zottmann, N.

AU - Zuo, Wenwen

PY - 2024/12/9

Y1 - 2024/12/9

N2 - Due to its peculiar and highly variable nature, the blazar 3C 454.3 has been extensively monitored by the WEBT team. Here, we present for the first time these long-term optical flux and color variability results using data acquired in B, V, R, and I bands over a time span of about two decades. We include data from WEBT collaborators and public archives such as SMARTS, Steward Observatory, and Zwicky Transient Facility. The data are binned and segmented to study the source over this long term when more regular sampling was available. During our study, the long-term spectral variability reveals a redder-when-brighter trend, which, however, stabilizes at a particular brightness cutoff of ∼14.5 mag in the I band, after which it saturates and evolves into a complex state. This trend indicates increasing dominance of jet emission over accretion disk (AD) emission until jet emission completely dominates. Plots of the variation in spectral index (following F ν ∝ ν −α ) reveal a bimodal distribution using a one-day binning. These correlate with two extreme phases of 3C 454.3, an outburst or high-flux state and a quiescent or low-flux state, which are respectively jet- and AD-dominated. We have also conducted intraday variability studies of nine light curves and found that six of them are variable. Discrete correlation function analysis between different pairs of optical wave bands peaks at zero lags, indicating cospatial emission in different optical bands.

AB - Due to its peculiar and highly variable nature, the blazar 3C 454.3 has been extensively monitored by the WEBT team. Here, we present for the first time these long-term optical flux and color variability results using data acquired in B, V, R, and I bands over a time span of about two decades. We include data from WEBT collaborators and public archives such as SMARTS, Steward Observatory, and Zwicky Transient Facility. The data are binned and segmented to study the source over this long term when more regular sampling was available. During our study, the long-term spectral variability reveals a redder-when-brighter trend, which, however, stabilizes at a particular brightness cutoff of ∼14.5 mag in the I band, after which it saturates and evolves into a complex state. This trend indicates increasing dominance of jet emission over accretion disk (AD) emission until jet emission completely dominates. Plots of the variation in spectral index (following F ν ∝ ν −α ) reveal a bimodal distribution using a one-day binning. These correlate with two extreme phases of 3C 454.3, an outburst or high-flux state and a quiescent or low-flux state, which are respectively jet- and AD-dominated. We have also conducted intraday variability studies of nine light curves and found that six of them are variable. Discrete correlation function analysis between different pairs of optical wave bands peaks at zero lags, indicating cospatial emission in different optical bands.

U2 - 10.3847/1538-4365/ad8e3d

DO - 10.3847/1538-4365/ad8e3d

M3 - Article

VL - 276

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

SN - 0067-0049

IS - 1

M1 - 1

ER -

ID: 132372037