منابع مشابه
Broad Iron Lines in AGN and X-ray Binaries
Several AGN and black hole X-ray binaries show a clear very broad iron line which is strong evidence that the black holes are rapidly spinning. Detailed analysis of these objects shows that the emission line is not significantly affected by absorption and that the source variability is principally due to variation in amplitude of a power-law. Underlying this is a much less variable, relativisti...
متن کاملThe similarity of broad iron lines in X-ray binaries and active galactic nuclei
We have compared the 2001 XMM–Newton spectra of the stellar mass black hole binary XTE J1650−500 and the active galaxy MCG–6-30-15, focusing on the broad, excess emission features at ∼4–7 keV displayed by both sources. Such features are frequently observed in both low-mass X-ray binaries and active galactic nuclei (AGN). For the former case it is generally accepted that the excess arises due to...
متن کاملIonized iron Kα lines in AGN X-ray spectra
The Equivalent Widths (EW) of the He– and H–like iron lines produced in photoionized, circumnuclear matter of AGN are calculated with respect to both the reflected and the total continua. We found that the EWs with respect to the total continuummay be as large as a few tens of eV, making them observable in bright Seyfert 1s by instruments on board Chandra and XMM–Newton. We apply our calculatio...
متن کاملAn XMM-Newton survey of broad iron lines in AGN
We report on the iron Kα line properties of a sample of Seyfert galaxies observed with the XMM-Newton EPIC pn instrument. Using a systematic and uniform analysis, we find that complexity at iron-K is extremely common in the XMMNewton spectra. Once appropriate soft X-ray absorption, narrow 6.4 keV emission and associated Compton reflection are accounted for, ∼ 75 % of the sample show an improvem...
متن کاملForty Years of X-Ray Binaries
In 2012 it was forty years ago that the discovery of the first X-ray binary Centaurus X-3 became known. That same year it was discovered that apart from the High-Mass X-ray Binaries (HMXBs) there are also Low-Mass X-ray Binaries (LMXBs), and that Cygnus X-1 is most probably a black hole. By 1975 also the new class of Be/X-ray binaries was discovered. After this it took 28 years before ESAs INTE...
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ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2005
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-005-1203-x