X-Ray Warm Absorber Variability of the Seyfert Galaxy Arakelian 564

被引：0
|
作者：
B. Korany
M. I. Nouh
机构：
[1] National Research Institute of Astronomy and Geophysics (NRIAG),Department of Astronomy
[2] Umm Al-Qura University,Department of Physics, Faculty of Applied Science
来源：
Astrophysics | 2019年 / 62卷
关键词：
galaxies; AGN X-rays; warm absorber; Arakelian 564;
D O I：
暂无
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学科分类号：
摘要：
We studied the variability of warm absorber clouds of ionized gas within AGN for the Seyfert 1 galaxy Arakelian 564. The X-ray spectra for four XMM-Newton observations of this object are analyzed using the EPIC and the RGS instruments. These four observations covered 11 years. The ionization parameter ξ of the absorbing matter changed between observations ( logξ = 0.889 ± 3.1 × 10-2 for the 2000 observation and 0.437 ± 7.60 × 10-2 for the year 2001). The X-ray soft excess is studied for the four observations using two black body parameters in EPIC spectra (the first black-body temperature is 3 0.129 ± 2.0 × 10-2 KeV and the second is 2 1.74 ± 7.6 × 10-2 KeV) and one black body parameter in RGS spectra.
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页码：300 / 312
页数：12
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