The X-ray Power Spectral Density Function and Black Hole Mass Estimate for the Seyfert AGN IC 4329a

Abstract

We present the X-ray broadband power spectral density function (PSD) of the X-ray-luminous Seyfert IC 4329a, constructed from light curves obtained via Rossi X-ray Timing Explorer monitoring and an XMM-Newton observation. Modeling the 3-10 keV PSD using a broken power-law PSD shape, a break in power-law slope is significantly detected at a temporal frequency of 2.5(+2.5,-1.7) * 10^-6 Hz, which corresponds to a PSD break time scale T_b of 4.6(+10.1,-2.3) days. Using the relation between T_b, black hole mass M_BH, and bolometric luminosity as quantified by McHardy and coworkers, we infer a black hole mass estimate of M_BH = 1.3(+1.0,-0.3) * 10^8 solar masses and an accretion rate relative to Eddington of 0.21(+0.06,-0.10) for this source. Our estimate of M_BH is consistent with other estimates, including that derived by the relation between M_BH and stellar velocity dispersion. We also present PSDs for the 10-20 and 20-40 keV bands; they lack sufficient temporal frequency coverage to reveal a significant break, but are consistent with the same PSD shape and break frequency as in the 3-10 keV band.

Accepted for publication in ApJ. 11 pages, 6 figures (5 color)

References in corpus (7)

• Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships
• Active Galactic Nuclei as scaled-up Galactic black holes
• Investigating a Fluctuating-accretion Model for the Spectral-timing Properties of Accreting Black Hole Systems
• Suzaku observations of the hard X-ray variability of MCG-6-30-15: the effects of strong gravity around a Kerr black hole
• Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a
• Evolution of the 0.01 - 25 Hz power spectral components in Cygnus X-1
• A Comprehensive X-ray Spectral Analysis of the Seyfert 1.5 NGC 3227

Cited by in corpus (29)

• Unification of X-ray winds in Seyfert galaxies: from ultra-fast outflows to warm absorbers
• Discovery of a relation between black hole mass and soft X-ray time lags in active galactic nuclei
• CAIXA: a catalogue of AGN in the XMM-Newton archive III. Excess Variance Analysis
• X-ray variability of 104 active galactic nuclei. XMM-Newton power-spectrum density profiles
• Long-term variability of AGN at hard X-rays
• The Broad-band X-ray Spectrum of IC 4329A from a Joint NuSTAR/Suzaku Observation
• A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies
• Ultraviolet and X-ray variability of active galactic nuclei with Swift
• Detection of Coronal Magnetic Activity in Nearby Active Supermassive Black Holes
• GRMHD prediction of coronal variability in accreting black holes
• Measuring the Coronal Properties of IC4329A with NuSTAR
• Spectral Survey of X-Ray Bright Active Galactic Nuclei from the Rossi X-ray Timing Explorer
• Short Timescale AGN X-ray Variability with EXOSAT: Black hole mass and Normalised Variability Amplitude
• Kepler Photometry of Four Radio-Loud AGN in 2010-2012
• Reverberation Mapping of IC4329A
• Probing the nature and origin of dust in the reddened quasar IC 4329A with global modelling from X-ray to infrared
• Hard X-ray spectral variability of the brightest Seyfert AGN in the Swift/BAT sample
• The X-ray Power Spectral Density Function of the Seyfert Active Galactic Nucleus NGC 7469
• Gamma-ray activity of Seyfert galaxies and constraints on hot accretion flows
• The First Hard X-Ray Power Spectral Density Functions of AGN
• Nonthermal processes in hot accretion flows onto supermassive black holes: An inhomogeneous model
• X-Ray Variability and the Inner Region in Active Galactic Nuclei
• The longest timescale X-ray variability reveals an evidence for active galactic nuclei in the high accretion state
• Update on the X-ray variability plane for active galactic nuclei: The role of the obscuration
• Continuum optical-UV and X-ray variability of AGN: current results and future challenges
• AstroSat/UVIT observations of IC4329A: Constraining the accretion disc inner radius
• Spectroscopic study of the [OIII]$\lambda$5007 profile in Seyfert 1 galaxies
• The New Primary X-ray Component Confirmed in the Seyfert I Galaxy IC4329A
• Energy dependence of the X-ray power spectrum in NGC4051 and NGC4395