A Comparative Study of Multiwavelength Blazar Variability on Decades to Minutes Timescales
Astronomical Observatory of the Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland
Received: 20 February 2018 / Revised: 28 February 2018 / Accepted: 2 March 2018 / Published: 8 March 2018
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Multiwavelength blazar variability is produced by noise-like processes with the power-law form of power spectral density (PSD). We present the results of our detailed investigation of multiwavelength (
-ray and optical) light curves covering decades to minutes timescales, of two BL Lac objects namely, PKS 0735+178 and OJ 287. The PSDs are derived using discrete Fourier transform (DFT) method. Our systematic approach reveals that OJ 287 is, on average, more variable than PKS 0735+178 at both optical and
-ray energies on the corresponding time scales. On timescales shorter than ∼10 days, due to continuous and dense monitoring by the Kepler
satellite, a steepening of power spectrum is observed for OJ 287. This indicates the necessity of an intermittent process generating variability on intra-night timescales for OJ 287.
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MDPI and ACS Style
Goyal, A. A Comparative Study of Multiwavelength Blazar Variability on Decades to Minutes Timescales. Galaxies 2018, 6, 34.
Goyal A. A Comparative Study of Multiwavelength Blazar Variability on Decades to Minutes Timescales. Galaxies. 2018; 6(1):34.
Goyal, Arti. 2018. "A Comparative Study of Multiwavelength Blazar Variability on Decades to Minutes Timescales." Galaxies 6, no. 1: 34.
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