English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present multi-wavelength spectral and temporal variability analysis of PKS0027-426 using optical griz observations from DES (Dark Energy Survey) between2013-2018 and VOILETTE (VEILS Optical Light curves of Extragalactic TransienTEvents) between 2018-2019 and near infrared (NIR) JKs observations from VEILS(VISTAExtragalactic Infrared Legacy Survey) between 2017-2019. Multiple methodsof cross-correlation of each combination of light curve provides measurementsof possible lags between optical-optical, optical-NIR, and NIR-NIR emission,for each observation season and for the entire observational period. Inter-bandtime lag measurements consistently suggest either simultaneous emission ordelays between emission regions on timescales smaller than the cadences ofobservations. The colour-magnitude relation between each combination of filterswas also studied to determine the spectral behaviour of PKS 0027-426. Ourresults demonstrate complex colour behaviour that changes between bluer whenbrighter (BWB), stable when brighter (SWB) and redder when brighter (RWB)trends over different timescales and using different combinations of opticalfilters. Additional analysis of the optical spectra is performed to providefurther understanding of this complex spectral behaviour.

Multi-wavelength Optical and NIR Variability Analysis of the Blazar PKS 0027-426