X-ray active galactic nuclei in the core of the Perseus cluster
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چکیده
منابع مشابه
X - ray active galactic nuclei in the core of the Perseus cluster
We present a study of the X-ray emission from the nuclei of galaxies observed in the core of the Perseus cluster in a deep exposure with Chandra. Point sources are found coincident with the nuclei of 13 early-type galaxies, as well as the central galaxy NGC 1275. This corresponds to all galaxies brighter than MB = −18 in the Chandra field. All of these sources have a steep power-law spectral co...
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We review some of the main physical and statistical properties of the X-ray absorber in AGNs. In particular, we review the distribution of the absorbing column density inferred from X-ray observations of various AGN samples. We discuss the location of the X-ray absorber and the relation with the dust absorption at optical and infrared wavelengths. Finally, we shortly review the recent findings ...
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The correlation between the soft X-ray and near infrared emission from AGN is analysed using composite models. We find new evidences for differences in ranges of parameters which characterize the NLR of Seyfert galaxies and LINERs. Soft X-rays show less variability, so they are better fitted for this kind of analysis. In our models soft X-ray are emitted in the post shock region of clouds with ...
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We derive an X-ray luminosity function for active galactic nuclei (AGN) that accounts for the X-ray source counts in the 0.5–2.0 and 2–10 keV energy ranges, the redshift distribution of AGNs in the ROSAT Deep Survey (RDS), as well as the X-ray background (XRB) from 1–10 keV. We emphasize the role of X-ray absorption, which has a large effect on the faint end of the 2– 10 keV source counts, as w...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2007
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2007.12437.x