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

Fuente: arXiv

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Bibliographic Details
Main Authors:	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., Chen, W. P., 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., Ismail, M., 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., Lin, H. C., Mannheim, K., Marchini, A., Marinelli, C., Marscher, A. P., Morcuende, D., Morozova, D. A., Nazarov, S. V., Nikolashvili, M. G., Reinhart, D., Santos, J. O., Scherbantin, A., Semkov, E., Shishkina, E. V., Sigua, L. A., Singh, A. K., Sota, A., Steineke, R., Stojanovic, M., 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
Format:	Preprint
Published:	2024
Subjects:	High Energy Astrophysical Phenomena
Online Access:	Acceder al recurso
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_version_	1866916523574034432
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. Chen, W. P. 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. Ismail, M. 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. Lin, H. C. Mannheim, K. Marchini, A. Marinelli, C. Marscher, A. P. Morcuende, D. Morozova, D. A. Nazarov, S. V. Nikolashvili, M. G. Reinhart, D. Santos, J. O. Scherbantin, A. Semkov, E. Shishkina, E. V. Sigua, L. A. Singh, A. K. Sota, A. Steineke, R. Stojanovic, M. 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
author_facet	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. Chen, W. P. 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. Ismail, M. 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. Lin, H. C. Mannheim, K. Marchini, A. Marinelli, C. Marscher, A. P. Morcuende, D. Morozova, D. A. Nazarov, S. V. Nikolashvili, M. G. Reinhart, D. Santos, J. O. Scherbantin, A. Semkov, E. Shishkina, E. V. Sigua, L. A. Singh, A. K. Sota, A. Steineke, R. Stojanovic, M. 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
contents	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 $\sim$ 2 decades. We include data from WEBT collaborators and public archives such as SMARTS, Steward Observatory, and ZTF. 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 (RWB) trend, which, however, stabilizes at a particular brightness cutoff $\sim$ 14.5 mag in the I-band, after which it saturates and evolves into a complex state. This trend indicates increasing jet emission dominance over accretion disk emission until jet emission completely dominates. Plots of the spectral index variation (following $F_ν \propto ν^{-α}$) 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 quiescent or low flux state, which are respectively jet and accretion disk dominated. We have also conducted intra-day variability studies of nine light curves and found that six of them are variable. Discrete Correlation Function (DCF) analysis between different optical waveband pairs peak at zero lags, indicating co-spatial emission in different optical bands.
format	Preprint
id	arxiv_https___arxiv_org_abs_2412_10766
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	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. Chen, W. P. 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. Ismail, M. 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. Lin, H. C. Mannheim, K. Marchini, A. Marinelli, C. Marscher, A. P. Morcuende, D. Morozova, D. A. Nazarov, S. V. Nikolashvili, M. G. Reinhart, D. Santos, J. O. Scherbantin, A. Semkov, E. Shishkina, E. V. Sigua, L. A. Singh, A. K. Sota, A. Steineke, R. Stojanovic, M. 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 High Energy Astrophysical Phenomena 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 $\sim$ 2 decades. We include data from WEBT collaborators and public archives such as SMARTS, Steward Observatory, and ZTF. 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 (RWB) trend, which, however, stabilizes at a particular brightness cutoff $\sim$ 14.5 mag in the I-band, after which it saturates and evolves into a complex state. This trend indicates increasing jet emission dominance over accretion disk emission until jet emission completely dominates. Plots of the spectral index variation (following $F_ν \propto ν^{-α}$) 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 quiescent or low flux state, which are respectively jet and accretion disk dominated. We have also conducted intra-day variability studies of nine light curves and found that six of them are variable. Discrete Correlation Function (DCF) analysis between different optical waveband pairs peak at zero lags, indicating co-spatial emission in different optical bands.
title	Multiband Optical Variability of the Blazar 3C 454.3 on Diverse Timescales
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2412.10766