Fourier-resolved spectroscopy of AGN using XMM-Newton data

I. E. Papadakis; Z. Ioannou; D. Kazanas

doi:10.1002/asna.200610642

Fourier-resolved spectroscopy of AGN using XMM-Newton data

I. E. Papadakis^*, Z. Ioannou, D. Kazanas

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1047-1054
Number of pages	8
Journal	Astronomische Nachrichten
Volume	327
Issue number	10
DOIs	https://doi.org/10.1002/asna.200610642
Publication status	Published - 2006
Externally published	Yes

Keywords

Galaxies: Seyfert
Galaxies: active
Methods: data analysis
X-rays: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1002/asna.200610642

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title = "Fourier-resolved spectroscopy of AGN using XMM-Newton data",

abstract = "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.",

keywords = "Galaxies: Seyfert, Galaxies: active, Methods: data analysis, X-rays: galaxies",

author = "Papadakis, {I. E.} and Z. Ioannou and D. Kazanas",

year = "2006",

doi = "10.1002/asna.200610642",

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journal = "Astronomische Nachrichten",

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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

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JO - Astronomische Nachrichten

JF - Astronomische Nachrichten

IS - 10

ER -

Fourier-resolved spectroscopy of AGN using XMM-Newton data

Abstract

Keywords

ASJC Scopus subject areas

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