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 observatio...

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Detalles Bibliográficos
Autores: Guise, E., Hönig, S. F., Almeyda, T., Horne, K., Kishimoto, M., Aguena, M., Allam, S., Andrade-Oliveira, F. [UNESP], Asorey, J., Banerji, M., Bertin, E., Boulderstone, B., Brooks, D., Burke, D. L., Carnero Rosell, A., Carollo, D., Carrasco Kind, M., Carretero, J., Costanzi, M., Da Costa, L. N., Davis, T. M., 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., Johnson, M. A.C., Kuehn, K., Lewis, G. F., Lidman, C., Lima, M., Maia, M. A.G., Malik, U., Menanteau, F., Miquel, R., Morgan, R., Ogando, R. L.C., Palmese, A., Paz-Chinchón, F., Pereira, M. E.S., Pieres, A., Plazas Malagón, A. A., Sanchez, E., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Seymour, N., Smith, M., Soares-Santos, M., Suchyta, E., Swanson, M. E.C., Tarle, G., To, C., Tucker, B. E.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/247612
Acceso en línea:http://dx.doi.org/10.1093/mnras/stab3457
http://hdl.handle.net/11449/247612
Access Level:acceso abierto
Palabra clave:Galaxies: active
Galaxies: jets
Quasars: individual: PKS 0027-426
Descripción
Sumario: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 light curve 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 of filters was also studied to determine the spectral behaviour of PKS 0027-426. 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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