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Multiwavelength study of different flaring and low-activity states of blazar 4C+21.35

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dc.contributor.author Bhattacharya, D
dc.contributor.author Krishna Mohana, A
dc.contributor.author Bhattacharyya, S
dc.contributor.author Bhatt, N
dc.contributor.author Stalin, C. S
dc.date.accessioned 2021-02-14T06:03:57Z
dc.date.available 2021-02-14T06:03:57Z
dc.date.issued 2021-01
dc.identifier.citation Monthly Notices of the Royal Astronomical Society , Vol. 500, No. 1, pp. 1127-1138 en_US
dc.identifier.issn 1365-2966
dc.identifier.uri http://hdl.handle.net/2248/7630
dc.description Restricted Access © The Royal Astronomical Society https://doi.org/10.1093/mnras/staa2958 en_US
dc.description.abstract Blazars, a class of active galactic nuclei, emit over the entire accessible electromagnetic spectrum and modelling of their broad-band spectral energy distribution (SED) is the key to constrain the underlying emission mechanisms. Here we report the results on the one-zone leptonic emission modelling carried out on the blazar 4C+21.35 using multiwavelength data spanning over the period 2008–2018. Broad-band SED modelling using γ-ray data from Fermi-Large Area Telescope, X-ray data from Swift-XRT and AstroSat, and UV–optical data from Swift-UVOT, AstroSat, and Catalina Real-Time Transient Survey was carried out at seven different epochs, including three γ-ray flaring episodes and four quiescent periods (three long-term averaged ones and one during AstroSat observing period). Our SED modelling suggests that two compact emission regions originating at a different time outside the broad-line region and moving away from the core with variation primarily in the jet electron spectra can explain the emission from the high-, moderate-, and low-activity periods. The emissions from high- and first low-activity states are likely to have originated in the first region. The moderate- and second low-activity states are likely due to the second emission region with fresh particle acceleration/injection at a later time. en_US
dc.language.iso en en_US
dc.publisher Oxford University Press on behalf of the Royal Astronomical Society en_US
dc.subject galaxies: active en_US
dc.subject galaxies: jets en_US
dc.subject gamma-rays: galaxies en_US
dc.subject X-rays: galaxies–quasars: individual: 4C+21.35 en_US
dc.title Multiwavelength study of different flaring and low-activity states of blazar 4C+21.35 en_US
dc.type Article en_US

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