Marat Arakelian: Life and Scientific Activity
نویسندگان
چکیده
منابع مشابه
Arakelian 564: An XMM-Newton view
We report on two XMM-Newton observations of the bright narrow-line Seyfert 1 galaxy Ark 564 taken one year apart (2000 June and 2001 June). The 0.6–10 keV continuum is well described by a soft blackbody component (kT ≈ 140–150 eV) plus a steep power law (Γ ≈ 2.50–2.55). No significant spectral changes are observed between the two observations, although the X-ray flux in the second observation i...
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ژورنال
عنوان ژورنال: Communications of the Byurakan Astrophysical Observatory
سال: 2019
ISSN: 2579-2776
DOI: 10.52526/25792776-2019.66.2-112