Title:	Study of Temporal and Spectral variability for Blazar PKS 1830-211 with Multiwavelength Data
Authors:	Abhir, J. Prince, Raj Joseph, J. Bose, D. Gupta, Nayantara
Keywords:	Active galactic nuclei (16) Blazars (164)
Issue Date:	Jul-2021
Publisher:	IOP Sciences for The American Astronomical Society
Citation:	The Astrophysical Journal, 2021, Vol.915 p26
Abstract:	A study of the gravitationally lensed blazar PKS 1830-211 was carried out using multi-wave band data collected by Fermi-LAT, Swift-XRT, and Swift-UVOT telescopes between MJD 58400 to MJD 58800 (2018 October 9-2019 November 13). Flaring states were identified by analyzing the gamma-ray light curve. Simultaneous multi-wave band spectral energy distributions (SEDs) were obtained for these flaring periods. A cross-correlation analysis of the multi-wave band data was carried out, which suggested a common origin of the gamma-ray and X-ray emission. The broadband emission mechanism was studied by modeling the SED using a leptonic model. Physical parameters of the blazar were estimated from the broadband SED modeling. The blazar PKS 1830-211 is gravitationally lensed by at least two galaxies and has been extensively studied in the literature because of this property. The self-correlation of the gamma-ray light curve was studied to identify the signature of lensing, but no conclusive evidence of correlation was found at the expected time delay of 26 days.
Description:	Open Access
URI:	http://hdl.handle.net/2289/7792
ISSN:	0004-637X 1538-4357(Online)
Alternative Location:	https://ui.adsabs.harvard.edu/abs/2021ApJ...915...26A/abstract https://arxiv.org/abs/2103.07188 https://doi.org/10.3847/1538-4357/abfd33
Copyright:	2021 The American Astronomical Society
Appears in Collections:	Research Papers (A&A)

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