TY - JOUR
T1 - Fourier-resolved spectroscopy of AGN using XMM-Newton data
AU - Papadakis, I. E.
AU - Ioannou, Z.
AU - Kazanas, D.
PY - 2006
Y1 - 2006
N2 - We present a brief account of the theory on which the novel method of 'Fourier-resolved spectroscopy' is based. We summarize the results from the past application of this method to the study of Galactic Black Hole candidate sources and MCG-6-30-15, and we present new results from the Fourier-resolved spectroscopy of archival XMM-Newton data of five AGN, namely, Mrk 766, NGC 3516, NGC 3783, NGC 4051 and Ark 564. When we combine all the past and present results from Galactic sources and AGN, we find that the slope of the Fourier-resolved spectra in accreting black hole systems decreases with increasing frequency as ∝ f-0.25, irrespective of whether the system is in its High or Low state. We find significant evidence that the iron line in Mrk 766, NGC 3783 and NGC 4051 is variable on time scales ∼ 1 day-1 hour. There is an indication that, just like in Galactic sources, the equivalent width of the line in the Fourier-resolved spectra of AGN decreases with increasing frequency.
AB - We present a brief account of the theory on which the novel method of 'Fourier-resolved spectroscopy' is based. We summarize the results from the past application of this method to the study of Galactic Black Hole candidate sources and MCG-6-30-15, and we present new results from the Fourier-resolved spectroscopy of archival XMM-Newton data of five AGN, namely, Mrk 766, NGC 3516, NGC 3783, NGC 4051 and Ark 564. When we combine all the past and present results from Galactic sources and AGN, we find that the slope of the Fourier-resolved spectra in accreting black hole systems decreases with increasing frequency as ∝ f-0.25, irrespective of whether the system is in its High or Low state. We find significant evidence that the iron line in Mrk 766, NGC 3783 and NGC 4051 is variable on time scales ∼ 1 day-1 hour. There is an indication that, just like in Galactic sources, the equivalent width of the line in the Fourier-resolved spectra of AGN decreases with increasing frequency.
KW - Galaxies: Seyfert
KW - Galaxies: active
KW - Methods: data analysis
KW - X-rays: galaxies
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U2 - 10.1002/asna.200610642
DO - 10.1002/asna.200610642
M3 - Article
AN - SCOPUS:33845956859
SN - 0004-6337
VL - 327
SP - 1047
EP - 1054
JO - Astronomische Nachrichten
JF - Astronomische Nachrichten
IS - 10
ER -