Akhila K, Ranjeev Misra, Savithri H. Ezhikode, Jeena K.
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引用次数: 0
摘要
我们将介绍 2018-2020 年期间对 Mrk 279 进行长期 X 射线分析的结果。为此，我们使用了来自 AstroSat、NuSTAR 和 XMM-Newton 等多个任务的数据。X射线光谱可以被模拟为双康普顿化，同时在所有时间段都存在中性铁Kα线发射。我们测定了该光源在这些不同时间段的 X 射线通量和光度。我们发现该源的通量状态变化很大。我们还研究了观测期间该源光谱成分的变化。我们发现光子指数以及光谱形状只在较长的时间段内才会发生变化。我们探究了不同波段的通量与其光子指数之间的相关性，发现参数之间没有明显的相关性。
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. TheX-ray spectrum can be modelled as a double Comptonisation along with the presence of neutral Fe Kα 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.
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