Long term X-ray spectral variations of the Seyfert-1 galaxy Mrk 279

We present the results from a long term X-ray analysis of Mrk 279 during the period 2018-2020. We use data from multiple missions - AstroSat, NuSTAR and XMM-Newton, for the purpose. The X-ray spectrum can be modelled as a double Comptonisation along with the presence of neutral Fe K\({\alpha}\) line...

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Bibliographic Details
Published inarXiv.org
Main Authors Akhila, K, Misra, Ranjeev, Ezhikode, Savithri H, Jeena, K
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 14.05.2024
Subjects
Alpha rays
Luminosity
Photons
Seyfert galaxies
X ray analysis
X ray spectra
XMM (spacecraft)
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Summary:We present the results from a long term X-ray analysis of Mrk 279 during the period 2018-2020. We use data from multiple missions - AstroSat, NuSTAR and XMM-Newton, for the purpose. The X-ray spectrum can be modelled as a double Comptonisation along with the presence of neutral Fe K\({\alpha}\) line emission, at all epochs. We determined the source's X-ray flux and luminosity at these different epochs. We find significant variations in the source's flux state. We also investigated the variations in the source's spectral components during the observation period. We find that the photon index and hence the spectral shape follow the variations only over longer time periods. We probe the correlations between fluxes of different bands and their photon indices, and found no significant correlations between the parameters.
ISSN:2331-8422