Disentangling the Complex Broadband X-ray Spectrum of IRAS 13197-1627 with NuSTAR, XMM-Newton and Suzaku

Abstract

We present results from a coordinated $XMM$-$Newton$+$NuSTAR$ observation of the type 1.8 Seyfert galaxy IRAS 13197-1627. This is a highly complex source, with strong contributions from relativistic reflection from the inner accretion disk, neutral absorption and further reprocessing by more distant material, and ionised absorption from an outflow. We undertake a detailed spectral analysis combining the broadband coverage provided by $XMM$-$Newton$+$NuSTAR$ with a multi-epoch approach incorporating archival observations performed by $XMM$-$Newton$ and $Suzaku$. Our focus is on characterising the reflection from the inner accretion disk, which previous works have suggested may dominate the AGN emission, and constraining the black hole spin. Using lamppost disk reflection models, we find that the results for the inner disk are largely insensitive to assumptions regarding the geometry of the distant reprocessor and the precise form of the illuminating X-ray continuum. However, these results do depend on the treatment of the iron abundance of the distant absorber/reprocessor. The multi-epoch data favour a scenario in which the AGN is chemically homogeneous, and we find that a rapidly rotating black hole is preferred, with $a^{\ast }\ge 0.7$, but a slowly-rotating black hole is not strongly excluded. In addition to the results for the inner disk, we also find that both the neutral and ionised absorbers vary from epoch to epoch, implying that both have some degree of inhomogeneity in their structure.

15 pages, 7 figures, accepted for publication in MNRAS

References in corpus (20)

• The role of the reflection fraction in constraining black hole spin
• Black hole feedback in the luminous quasar PDS 456
• An absorption origin for the X-ray spectral variability of MCG-6-30-15
• The response of relativistic outflowing gas to the inner accretion disk of a black hole
• The NuSTAR spectrum of Mrk 335: Extreme relativistic effects within 2 gravitational radii of the event horizon?
• The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source
• NuSTAR and XMM-Newton Observations of NGC 1365: Extreme Absorption Variability and a Constant Inner Accretion Disk
• Determining the covering factor of Compton-thick active galactic nuclei with NuSTAR
• Metallicity evolution of AGNs from UV emission-lines based on a new index
• The absorption-dominated model for the X-ray spectra of type I active galaxies: MCG-6-30-15
• The NuSTAR Serendipitous Survey: Hunting for The Most Extreme Obscured AGN at >10 keV
• Reflection From the Strong Gravity Regime in a z=0.658 Gravitationally Lensed-Quasar
• The Multi-Layer Variable Absorbers in NGC 1365 Revealed by XMM-Newton and NuSTAR
• Broadband X-ray spectral analysis of the Seyfert 1 galaxy GRS 1734-292
• IRAS 13197-1627 has them all: Compton-thin absorption, photo-ionized gas, thermal plasmas, and a broad Fe line
• Disk-Wind Connection During the Heartbeats of GRS 1915+105
• A Rapidly Spinning Black Hole Powers the Einstein Cross
• Evidence for Relativistic Disk Reflection in the Seyfert 1h Galaxy/ULIRG IRAS 05189-2524 Observed by NuSTAR and XMM-Newton
• Broad Iron Emission from Gravitationally Lensed Quasars Observed by Chandra
• Testing relativistic reflection and resolving outflows in PG 1211+143 with XMM-Newton and NuSTAR

Cited by in corpus (12)

• Observational Constraints on Black Hole Spin
• Towards precision measurements of accreting black holes using X-ray reflection spectroscopy
• Analytical Solution of Magnetically Dominated Astrophysical Jets and Winds: Jet Launching, Acceleration, and Collimation
• The dust-gas AGN torus as constrained from X-ray and mid-infrared observations
• A Low-Flux State in IRAS 00521-7054 seen with NuSTAR and XMM-Newton: Relativistic Reflection and an Ultrafast Outflow
• Testing the performance and accuracy of the RELXILL model for the relativistic X-ray reflection from accretion disks
• Probing the nature of the low state in the extreme ultraluminous X-ray pulsar NGC 5907 ULX1
• A Full Characterisation of the Supermassive Black Hole in IRAS 09149-6206
• Extreme Relativistic Reflection in the Active Galaxy ESO 033-G002
• The Low Temperature Corona in ESO 511$-$G030 Revealed by NuSTAR and XMM-Newton
• Constraining black hole spin in PG 1535+547 amidst complex multi-layered absorption
• X-ray Absorption and Reprocessing in the $z\sim 2.5$ Lensed Quasar 2MASS J1042+1641