XMM-Newton Observations of the Narrow-Line Seyfert 1 Galaxy IRAS 13224$-$3809 : X-ray Spectral Analysis II

Abstract

Previously, we modelled the X-ray spectra of the narrow-line Seyfert 1 galaxy IRAS 13224$-$3809 using a disc reflection model with a fixed electron density of $10^{15}$ cm${}^{-3}$. An additional blackbody component was required to fit the soft X-ray excess below 2 keV. In this work, we analyse simultaneously five flux-resolved XMM-Newton spectra of this source comprising data collected over 2 Ms. A disc reflection model with an electron density of $n_{\mathrm{e}}\approx 10^{20}$ cm${}^{-3}$ and an iron abundance of $Z_{\mathrm{Fe}}=3.2\pm 0.5Z_{\odot }$ is used to fit the broad-band spectra of this source. No additional component is required to fit the soft excess. Our best-fit model provides consistent measurements of black hole spin and disc inclination angle as in previous models where a low disc density was assumed. In the end, we calculate the average illumination distance between the corona and the reflection region in the disc of IRAS 13224$-$3809 based on best-fit density and ionisation parameters, which changes from 0.43$\sqrt{f_{\mathrm{AD}}/f_{\mathrm{INF}}}$ $r_{\mathrm{g}}$ in the lowest flux state to 1.71$\sqrt{f_{\mathrm{AD}}/f_{\mathrm{INF}}}$ $r_{\mathrm{g}}$ in the highest flux state assuming a black hole mass of $2\times 10^6{M}_{\odot }$. $f_{\mathrm{AD}}/f_{\mathrm{INF}}$ is the ratio between the flux of the coronal emission that reaches the accretion disc and infinity. This ratio depends on the geometry of the coronal region in IRAS 13224$-$3809. So we only discuss its value based on the simple `lamp-post' model, although detailed modelling of the disc emissivity profile of IRAS 13224$-$3809 is required in future to reveal the exact geometry of the corona.

arXiv comment17 pages, 15 figures including appendices; accepted for publication in MNRAS

References in corpus (51)

• On the Absorption of X-rays in the Interstellar Medium
• The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures
• Calibration of X-ray absorption in our Galaxy
• The May 1989 outburst of the Soft X-ray Transient GS 2023+338 (V404 Cyg)
• The distribution of absorbing column densities among Seyfert 2 galaxies
• Irradiation of an Accretion Disc by a Jet: General Properties and Implications for Spin Measurements of Black Holes
• The role of the reflection fraction in constraining black hole spin
• X-ray reflected spectra from accretion disk models. I. Constant density atmospheres
• Broad emission lines for negatively spinning black holes
• X-ray reflection spectra from ionized slabs
• Understanding X-ray reflection emissivity profiles in AGN: Locating the X-ray source
• The lack of variability of the iron line in MCG-6-30-15: general relativistic effects
• High-Density Effects in X-ray Reflection Models from Accretion Disks
• ROSAT monitoring of persistent giant and rapid variability in the narrow-line Seyfert 1 galaxy IRAS 13224-3809
• The response of relativistic outflowing gas to the inner accretion disk of a black hole
• Alternative explanations for extreme supersolar iron abundances inferred from the energy spectrum of Cygnus X-1
• Determination of the X-ray reflection emissivity profile of 1H 0707-495
• X-ray reflection in accreting stellar-mass black hole systems
• High Density Reflection Spectroscopy: II. the Density of the Inner Black Hole Accretion Disc in AGN
• Long XMM observation of the Narrow-Line Seyfert 1 galaxy IRAS13224-3809: rapid variability, high spin and a soft lag
• Narrow Iron K$\alpha$ Lines in Active Galactic Nuclei: Evolving Populations?
• The 1.5 Ms Observing Campaign on IRAS 13224-3809: X-ray Spectral Analysis I
• A dynamic black hole corona in an active galaxy through X-ray reverberation mapping
• High Density Reflection Spectroscopy I. A case study of GX~339-4
• Relativistic disc reflection in the extreme NLS1 IRAS13224-3809
• Ultrafast outflows disappear in high radiation fields
• Self-Consistent Black Hole Accretion Spectral Models and the Forgotten Role of Coronal Comptonization of Reflection Emission
• XMM-Newton spectral properties of the Narrow-Line Seyfert 1 galaxy IRAS 13224--3809
• The remarkable X-ray variability of IRAS 13224-3809 I: The variability process
• Revealing the ultra-fast outflow in IRAS 13224-3809 through spectral variability
• Probing the geometry and motion of AGN coronae through accretion disc emissivity profiles
• Modelling the Extreme X-ray Spectrum of IRAS 13224-3809
• Measuring the Innermost Stable Circular Orbits of Supermassive Black Holes
• Light bending and X-ray echoes from behind a supermassive black hole
• The X-ray variability of the Narrow-Line Seyfert 1 galaxy IRAS 13224-3809 from an XMM-Newton observation
• Improved spectral models for relativistic reflection
• Evidence for an emerging disc wind and collimated outflow during an X-ray flare in the narrow-line Seyfert 1 galaxy Mrk 335
• Caught in the act: Measuring the changes in the corona that cause the extreme variability of 1H 0707-495
• Multiple X-ray reflection from ionized slabs
• A combined timing/spectral study of IRAS 13224-3809 using XMM-Newton data
• A high-density relativistic reflection origin for the soft and hard X-ray excess emission from Mrk 1044
• Impact of the returning radiation on the analysis of the reflection spectra of black holes
• Is there a UV/X-ray connection in IRAS 13224-3809?
• A Relativistic Disc Reflection Model for 1H0419-577: Multi-Epoch Spectral Analysis with XMM-Newton and NuSTAR
• Two major constraints on the inner radii of accretion disks
• X-ray reflection from the inner disk of the AGN Ton S180
• Eclipsing the X-ray emitting region in the active galaxy NGC 6814
• A NuSTAR View of GRS 1716$-$249 in the Hard and Intermediate States
• Geometry of the X-ray source 1H 0707-495
• X-ray perspective of Narrow-line Seyfert 1 galaxies
• Blueshifted absorption lines from X-ray reflection in IRAS 13224-3809

Cited by in corpus (9)

• Revealing the intrinsic X-ray reverberation lags in IRAS 13224-3809 through the Granger causality test
• Coronal height constraint in IRAS 13224-3809 and 1H 0707-495 by the random forest regressor
• Hidden biases in flux-resolved X-ray spectroscopy
• Extracting the X-ray reverberation response functions from the AGN light curves using an autoencoder
• Constraining black hole spin in PG 1535+547 amidst complex multi-layered absorption
• A truncated inner disc in the Seyfert 1 galaxy WKK 4438
• Fast Outflowing Warm Absorbers in Narrow-Line Seyfert 1 Galaxy PG 1001+054 Revealed by HST/COS Spectra
• Mapping the X-ray corona evolution of IRAS 13224-3809 with the power spectral density
• Unveiling the dynamics of the ultra-fast outflow in IRAS 13224-3809 with X-ray spectroscopy