A Comprehensive X-ray Spectral Analysis of the Seyfert 1.5 NGC 3227

Abstract

We present results of a 100 ks XMM observation of the Seyfert 1.5 NGC 3227. Our best-fit broadband model to the pn spectrum consists of a moderately flat (photon index 1.57) hard X-ray power-law absorbed by cold gas with N_H = 3 * 10^21 cm^-2, plus a strong soft excess, modeled as a steep power law with a photon index of 3.35, absorbed by cold gas with N_H = 9 * 10^20 cm^-2. The soft excess normalization increases by ~20% in ~20 ks, independently of the hard X-ray component, and the UV continuum, tracked via the OM, also shows a strong increasing trend over the observation, consistent with reprocessing of soft X-ray emission. Warm absorber signatures are evident in both the EPIC and RGS; we model two layers, with log(xi) = 1.2 and 2.9 erg cm s^-1, and with similar column densities (~1-2 * 10^21 cm^-2). The outflow velocities relative to systemic of the high- and low-ionization absorbers are estimated to be -(2060(+240,-170)) km/s and -(420(+430,-190)) km/s, respectively. The Fe K alpha line width FWHM is 7000 +/- 1500 km/s; its inferred radius is consistent with the BLR and with the inner radius of the dust reverberation-mapped by Suganuma et al. An emission feature near 6.0 keV is modeled equally well as a narrow redshifted Fe K line, possibly associated with a disk "hot-spot," or as the red wing to a relativistically broadened Fe line profile. Swift-BAT and archival RXTE data suggest at most weak Compton reflection (R <~ 0.5), and a high-energy cutoff near 100 keV. From RXTE monitoring, we find tentative evidence for a significant fraction of the Fe line flux to track continuum variations on time scales < 700 days.

Accepted for publication in ApJ. 34 pages, 17 figures

References in corpus (23)

• Investigating a Fluctuating-accretion Model for the Spectral-timing Properties of Accreting Black Hole Systems
• A Survey of Kiloparsec-Scale Radio Outflows in Radio-Quiet Active Galactic Nuclei
• The Compact, Conical, Accretion-Disk Warm Absorber of the Seyfert 1 Galaxy NGC 4051 and its Implications for IGM-Galaxy Feedback Processes
• The hard X-ray spectral evolution in X-ray binaries and its application to constrain the black hole mass of ultraluminous X-ray sources
• Rapid N_H changes in NGC 4151
• The Existence of Inner Cool Disks in the Low Hard State of Accreting Black Holes
• Inner-shell Absorption Lines of Fe~VI-- Fe~XVI: A Many-body Perturbation Theory Approach
• Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a
• Tracing a Disk Wind in NGC 3516
• Relativistic Iron K Emission and absorption in the Seyfert 1.9 galaxy MCG-5-23-16
• Relativistic spectral features from X-ray illuminated spots and the measure of the black hole mass in AGN
• Probing the Disk-jet Connection of the Radio Galaxy 3C120 Observed with Suzaku
• The Suzaku Observation of the Nucleus of the Radio-Loud Active Galaxy Centaurus A: Constraints on Abundances of the Accreting Material
• Energy-dependent variability and the origin of the soft X-ray excess in AGN
• On the evidence for narrow, relativistically shifted X-ray lines
• Revisiting He-like X-ray Emission Line Plasma Diagnostics
• X-ray and optical variability of Seyfert 1 galaxies as observed with XMM-Newton
• A new model for the Warm Absorber in NGC 3783: a single medium in total pressure equilibrium
• A longer XMM-Newton look at I Zwicky 1: Variability of the X-ray continuum, absorption, and iron Kalpha line
• The Suzaku Observation of NGC 3516: Complex Absorption and the Broad and Narrow Fe K Lines
• Iron lines from transient and persisting hot spots on AGN accretion disks
• Correlated modulation between the redshifted Fe K alpha line and the continuum emission in NGC 3783
• Fourier-resolved energy spectra of the Narrow Line Seyfert 1 Mkn 766

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