Multi Frequency Temporal and Spectral variability study of Blazar PKS 1424-418

Abstract

A study of blazar PKS 1424-418 was carried out using multi waveband data collected by Fermi-LAT, Swift-XRT, Swift-UVOT and SMARTS telescopes between MJD 56000 to MJD 56600 (14 Mar 2012 to 4 Nov 2013). Two flaring episodes were identified by analysing the gamma ray light curve. Simultaneous multi waveband Spectral Energy Distributions (SED) were obtained for those two flaring periods. A cross-correlation analysis of IR-Optical and $\gamma$-ray data suggested the origin of these emissions from the same region. We have set a lower limit for the Doppler factor using the highest energy photon observed from this source during the flaring periods, which should be $>$12. The broadband emission mechanism was studied by modelling the SED using leptonic emission mechanism.

Published in MNRAS, Volume 501, Issue 2, Feb 2021. Pages 2504-2511. Updated with suggestions and corrections pointed out by the Referee. Results remain unchanged. 12 pages, 6 figures

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