Geometry of the X-ray source 1H 0707-495

Abstract

We investigate constraints for the size and location of the X-ray source in 1H 0707-495 determined from the shape of the relativistically smeared reflection from the accretion disc. We develop a new code to model an extended X-ray source and we apply it to all archival XMM observations of 1H 0707-495. Contrary to Wilkins et al. we find that the relativistic reflection in this source is not consistent with an extended uniform corona. Instead, we find that the X-ray source must be very compact, with the size of at most a gravitational radius, and located at most at a few gravitational radii from the black hole horizon. A uniform extended corona does indeed produce an emissivity which is like a twice broken power law, but the inner emissivity is fixed by the source geometry rather than being a free parameter. In 1H0707-495, reflection from the inner disc is much stronger than expected for a uniformly extended source. Including the effect of ionised absorption from a wind does not change this conclusion, but including scattered emission (and more complex absorption) from the wind can dramatically change the reflection parameters.

arXiv commentAccepted for publication in Astronomy & Astrophysics journal

References in corpus (29)

• A light bending model for the X-ray temporal and spectral properties of accreting black holes
• The role of the reflection fraction in constraining black hole spin
• Understanding X-ray reflection emissivity profiles in AGN: Locating the X-ray source
• Iron fluorescence from within the innermost stable orbit of black hole accretion disks
• Broad iron L-line and X-ray reverberation in 1H0707-495
• X-ray iron line reverberation from black hole accretion disks
• 1H0707-495 in 2011: An X-ray source within a gravitational radius of the event horizon
• XMM-Newton discovery of a sharp spectral feature at ~7 keV in the Narrow-Line Seyfert 1 galaxy 1H 0707-495
• Determination of the X-ray reflection emissivity profile of 1H 0707-495
• Measuring Supermassive Black Hole Spins in Active Galactic Nuclei
• Spectral Analysis of 1H0707-495 with XMM-Newton
• The origin of ultra-fast outflows in AGN: Monte-Carlo simulations of the wind in PDS 456
• A disk wind interpretation of the strong Fe Kα features in 1H 0707-495
• X-ray Diagnostics of Giant Molecular Clouds in the Galactic Center Region and Past Activity of Sgr A*
• Detection of a possible X-ray Quasi-periodic Oscillation in the Active Galactic Nucleus 1H~0707-495
• The Mass and Spin of The Extreme Narrow Line Seyfert 1 Galaxy 1H 0707-495 and Its Implications for The Trigger for Relativistic Jets
• On the lamppost model of accreting black holes
• Improved spectral models for relativistic reflection
• X-ray iron line variability for the model of an orbiting flare above a black hole accretion disc
• Caught in the act: Measuring the changes in the corona that cause the extreme variability of 1H 0707-495
• On variability and spectral distortion of the fluorescent iron lines from black-hole accretion discs
• The iron K feature in Narrow Line Seyfert 1's: evidence for a P Cygni profile?
• A stratified ultrafast outflow in 1H0707-495?
• Revisiting the extremely fast disc wind in a gravitationally lensed quasar APM 08279+5255
• X-ray reverberation lags of the Fe-K line due to AGN disc winds
• Gravitational effects on the high energy emission of accreting black holes
• GR models of the X-ray spectral variability of MCG--6-30-15
• The lamppost model: effects of photon trapping, the bottom lamp and disc truncation
• Monte-Carlo simulations of the detailed iron absorption line profiles from thermal winds in X-ray binaries

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• Extreme ultra-soft X-ray variability in an eROSITA observation of the Narrow-Line Seyfert 1 Galaxy 1H 0707-495
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• Estimating the size of X-ray lamppost coronae in active galactic nuclei
• Speed limits for radiation driven SMBH winds
• The hard to soft transition of GX 339-4 as seen by Insight-HXMT
• XMM-Newton Observations of the Narrow-Line Seyfert 1 Galaxy IRAS 13224$-$3809 : X-ray Spectral Analysis II
• Extended Corona Models of X-ray Reverberation in the AGN 1H~0707-495 and IRAS 13224-3809
• X-ray timing and spectral analysis of reverberating active galactic nuclei
• Coronal height constraint in IRAS 13224-3809 and 1H 0707-495 by the random forest regressor
• Relativistic reflection within an extended hot plasma geometry
• Reflection Spectra of Accretion Disks Illuminated by an Off-Axis Corona
• Lamp-post with an outflow and the hard state of Cyg X-1