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Multiwavelength optical and NIR variability analysis of the Blazar PKS 0027-426

Multiwavelength optical and NIR variability analysis of the Blazar PKS 0027-426
Multiwavelength optical and NIR variability analysis of the Blazar PKS 0027-426
We present multiwavelength spectral and temporal variability analysis of PKS 0027-426 using optical griz observations from Dark Energy Survey between 2013 and 2018 and VEILS Optical Light curves of Extragalactic TransienT Events (VOILETTE) between 2018 and 2019 and near-infrared (NIR) JKs observations from Visible and Infrared Survey Telescope for Astronomy Extragalactic Infrared Legacy Survey (VEILS) between 2017 and 2019. Multiple methods of cross-correlation of each combination of lightcurve provides measurements of possible lags between optical-optical, optical-NIR, and NIR-NIR emission, for each observation season and for the entire observational period. Inter-band time lag measurements consistently suggest either simultaneous emission or delays between emission regions on time-scales smaller than the cadences of observations. The colour-magnitude relation between each combination offilters was also studied to determine the spectral behaviour of PKS0027-426. Our results demonstrate complex colour behaviour that changes between bluer when brighter, stable when brighter, and redder when brighter trends over different time-scales and using different combinations of optical filters. Additional analysis of the optical spectra is performed to provide further understanding of this complex spectral behaviour.
galaxies: active, galaxies: jets, quasars: individual: PKS 0027-426
1365-2966
3145-3177
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Kishimoto, M.
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Plazas Malagón, A. A.
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Scarpine, V.
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Suchyta, E.
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Guise, E.
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Hönig, S. F.
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Almeyda, T.
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Horne, K.
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Kishimoto, M.
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Aguena, M.
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Allam, S.
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Andrade-Oliveira, F.
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Asorey, J.
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Banerji, M.
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Bertin, E.
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Boulderstone, B.
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Carnero Rosell, A.
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Carretero, J.
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Costanzi, M.
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da Costa, L. N.
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De Vicente, J.
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Ferrero, I.
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Flaugher, B.
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Frieman, J.
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Gandhi, P.
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Goad, M.
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Gruen, D.
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Gruendl, R. A.
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Gschwend, J.
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Gutierrez, G.
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Kuehn, K.
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Malik, U.
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Ogando, R. L. C.
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Palmese, A.
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Pieres, A.
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Plazas Malagón, A. A.
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Scarpine, V.
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Serrano, S.
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Soares-Santos, M.
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Suchyta, E.
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Swanson, M. E. C.
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Tarle, G.
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To, C.
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Tucker, B. E.
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Guise, E., Hönig, S. F., Almeyda, T., Horne, K., Kishimoto, M., Aguena, M., Allam, S., Andrade-Oliveira, F., Asorey, J., Banerji, M., Bertin, E., Boulderstone, B., Burke, D. L., Carnero Rosell, A., Carollo, D., Carrasco Kind, M., Carretero, J., Costanzi, M., da Costa, L. N., De Vicente, J., Doel, P., Everett, S., Ferrero, I., Flaugher, B., Frieman, J., Gandhi, P., Goad, M., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., James, D. J., Kuehn, K., Lidman, C., Lima, M., Maia, M. A. G., Malik, U., Menanteau, F., Miquel, R., Ogando, R. L. C., Palmese, A., Paz-Chinchón, F., Pereira, M. E. S., Pieres, A., Plazas Malagón, A. A., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Seymour, N., Soares-Santos, M., Suchyta, E., Swanson, M. E. C., Tarle, G., To, C. and Tucker, B. E. (2022) Multiwavelength optical and NIR variability analysis of the Blazar PKS 0027-426. Monthly Notices of the Royal Astronomical Society, 510 (3), 3145-3177. (doi:10.1093/mnras/stab3457).

Record type: Article

Abstract

We present multiwavelength spectral and temporal variability analysis of PKS 0027-426 using optical griz observations from Dark Energy Survey between 2013 and 2018 and VEILS Optical Light curves of Extragalactic TransienT Events (VOILETTE) between 2018 and 2019 and near-infrared (NIR) JKs observations from Visible and Infrared Survey Telescope for Astronomy Extragalactic Infrared Legacy Survey (VEILS) between 2017 and 2019. Multiple methods of cross-correlation of each combination of lightcurve provides measurements of possible lags between optical-optical, optical-NIR, and NIR-NIR emission, for each observation season and for the entire observational period. Inter-band time lag measurements consistently suggest either simultaneous emission or delays between emission regions on time-scales smaller than the cadences of observations. The colour-magnitude relation between each combination offilters was also studied to determine the spectral behaviour of PKS0027-426. Our results demonstrate complex colour behaviour that changes between bluer when brighter, stable when brighter, and redder when brighter trends over different time-scales and using different combinations of optical filters. Additional analysis of the optical spectra is performed to provide further understanding of this complex spectral behaviour.

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Accepted/In Press date: 18 November 2021
Published date: 1 March 2022
Additional Information: Publisher Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
Related URLs:
Keywords: galaxies: active, galaxies: jets, quasars: individual: PKS 0027-426
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Identifiers

Local EPrints ID: 455850
URI: http://eprints.soton.ac.uk/id/eprint/455850
DOI: doi:10.1093/mnras/stab3457
ISSN: 1365-2966
PURE UUID: 155ec9d0-e9e9-43fa-84ca-14f7ac474766
ORCID for E. Guise: ORCID iD orcid.org/0000-0002-5957-6202
ORCID for P. Gandhi: ORCID iD orcid.org/0000-0003-3105-2615

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Date deposited: 06 Apr 2022 16:57
Last modified: 17 Mar 2024 03:36

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Contributors

Author: E. Guise ORCID iD
Author: S. F. Hönig
Author: T. Almeyda
Author: K. Horne
Author: M. Kishimoto
Author: M. Aguena
Author: S. Allam
Author: F. Andrade-Oliveira
Author: J. Asorey
Author: M. Banerji
Author: E. Bertin
Author: B. Boulderstone
Author: D. L. Burke
Author: A. Carnero Rosell
Author: D. Carollo
Author: M. Carrasco Kind
Author: J. Carretero
Author: M. Costanzi
Author: L. N. da Costa
Author: J. De Vicente
Author: P. Doel
Author: S. Everett
Author: I. Ferrero
Author: B. Flaugher
Author: J. Frieman
Author: P. Gandhi ORCID iD
Author: M. Goad
Author: D. Gruen
Author: R. A. Gruendl
Author: J. Gschwend
Author: G. Gutierrez
Author: S. R. Hinton
Author: D. L. Hollowood
Author: K. Honscheid
Author: D. J. James
Author: K. Kuehn
Author: C. Lidman
Author: M. Lima
Author: M. A. G. Maia
Author: U. Malik
Author: F. Menanteau
Author: R. Miquel
Author: R. L. C. Ogando
Author: A. Palmese
Author: F. Paz-Chinchón
Author: M. E. S. Pereira
Author: A. Pieres
Author: A. A. Plazas Malagón
Author: V. Scarpine
Author: S. Serrano
Author: I. Sevilla-Noarbe
Author: N. Seymour
Author: M. Soares-Santos
Author: E. Suchyta
Author: M. E. C. Swanson
Author: G. Tarle
Author: C. To
Author: B. E. Tucker

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