Multiwavelength optical and NIR variability analysis of the Blazar PKS 0027-426
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1
E. Guise
- Function : Author
S. F. Hönig
- Function : Author
T. Almeyda
- Function : Author
K. Horne
- Function : Author
M. Kishimoto
- Function : Author
M. Aguena
- Function : Author
S. Allam
- Function : Author
F. Andrade-Oliveira
- Function : Author
J. Asorey
- Function : Author
M. Banerji
- Function : Author
B. Boulderstone
- Function : Author
D. Brooks
- Function : Author
D. L. Burke
- Function : Author
A. Carnero Rosell
- Function : Author
D. Carollo
- Function : Author
M. Carrasco Kind
- Function : Author
J. Carretero
- Function : Author
M. Costanzi
- Function : Author
L. N. da Costa
- Function : Author
T. M. Davis
- Function : Author
J. de Vicente
- Function : Author
P. Doel
- Function : Author
S. Everett
- Function : Author
I. Ferrero
- Function : Author
B. Flaugher
- Function : Author
J. Frieman
- Function : Author
P. Gandhi
- Function : Author
M. Goad
- Function : Author
D. Gruen
- Function : Author
R. A. Gruendl
- Function : Author
J. Gschwend
- Function : Author
G. Gutierrez
- Function : Author
S. R. Hinton
- Function : Author
D. L. Hollowood
- Function : Author
K. Honscheid
- Function : Author
D. J. James
- Function : Author
M. A. C. Johnson
- Function : Author
K. Kuehn
- Function : Author
G. F. Lewis
- Function : Author
C. Lidman
- Function : Author
M. Lima
- Function : Author
M. A. G. Maia
- Function : Author
U. Malik
- Function : Author
F. Menanteau
- Function : Author
R. Miquel
- Function : Author
R. Morgan
- Function : Author
R. L. C. Ogando
- Function : Author
A. Palmese
- Function : Author
F. Paz-Chinchón
- Function : Author
M. E. S. Pereira
- Function : Author
A. Pieres
- Function : Author
A. A. Plazas Malagón
- Function : Author
E. Sanchez
- Function : Author
V. Scarpine
- Function : Author
S. Serrano
- Function : Author
I. Sevilla-Noarbe
- Function : Author
N. Seymour
- Function : Author
M. Smith
- Function : Author
M. Soares-Santos
- Function : Author
E. Suchyta
- Function : Author
M. E. C. Swanson
- Function : Author
G. Tarle
- Function : Author
C. To
- Function : Author
B. E. Tucker
- Function : Author
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 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.