The variable X-ray spectrum of Markarian 766
نویسندگان
چکیده
منابع مشابه
The variable X-ray spectrum of Markarian 766 - I. Principal components analysis
Aims. We analyse a long XMM-Newton spectrum of the narrow-line Seyfert 1 galaxy Mrk 766, using the marked spectral variability on timescales > 20 ks to separate components in the X-ray spectrum. Methods. Principal components analysis is used to identify distinct emission components in the X-ray spectrum, possible alternative physical models for those components are then compared statistically. ...
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An analysis is presented of the power spectrum of X-ray variability of the bright Seyfert 1 galaxy Mrk 766 as observed by XMM-Newton. Over the 0.2–10 keV energy range the power spectral density (PSD) is well-represented by a power-law with a slope of αlow ≈ 1 at low frequencies, breaking to a slope of αhi = 2.8 +0.2 −0.4 at a frequency fbr ≈ 5 × 10 −4 Hz. As has been noted before this broken po...
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Aims. We investigate the link between ionised Fe X-ray line emission and continuum emission in a bright nearby AGN, Mrk 766. Methods. A new long (433 ks) XMM-Newton observation is analysed, together with archival data from 2000 and 2001. The contribution from ionised line emission is measured and its time variations on short (5–20 ks) timescales are correlated with the continuum emission. Resul...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20066548