The relativistic shift of narrow spectral features from black-hole accretion discs
arXiv:astro-ph/0507196 · doi:10.1051/0004-6361:20053451
Abstract
Transient spectral features have been discovered in the X-ray spectra of Active Galactic Nuclei, mostly in the 5--7 keV energy range. Several interpretations were proposed for the origin of these features. We examined a model of Doppler boosted blue horns of the iron line originating from a spot in a black hole accretion disc, taking into account different approximations of general relativistic light rays and the resulting shift of energy of photons. We provide a practical formula for the blue horn energy of an intrinsically narrow line and assess its accuracy by comparing the approximation against an exact value, predicted under the assumption of a planar accretion disc. The most accurate approximation provides excellent agreement with the spot orbital radius down to the marginally stable orbit of a non-rotating black hole.
arXiv commentAccepted for publication in A&A; 8 pages, 5 figures
References in corpus (28)
- Broad iron lines in Active Galactic Nuclei
- A Model for the X-Ray and UV Emission from Seyfert Galaxies and Galactic Black Holes
- Gravitational Bending of Light Near Compact Objects
- An extended scheme for fitting X-ray data with accretion disk spectra in the strong gravity regime
- Spectral evolution of magnetic flares and time lags in accreting black hole sources
- Extreme Gravitational Lensing near Rotating Black Holes
- Narrow Components within the Fe Kalpha Profile of NGC 3516: Evidence for the Importance of General Relativistic Effects?
- Flux and energy modulation of redshifted iron emission in NGC3516: implications for the black hole mass
- Line Emission from an Accretion Disk around a Rotating Black Hole: Toward a Measurement of Frame Dragging
- Effects of Kerr Spacetime on Spectral Features from X-Ray Illuminated Accretion Discs
- X-ray reprocessing in Seyfert Galaxies: simultaneous XMM-Newton/BeppoSAX observations
- Complex X-ray Absorption and the Fe Kalpha Profile in NGC 3516
- Fe XXV and Fe XXVI Diagnostics of the Black Hole and Accretion Disk in Active Galaxies: Chandra Time-Resolved Spectroscopy of NGC 7314
- Iron Line Profiles in Strong Gravity
- Relativistic spectral features from X-ray illuminated spots and the measure of the black hole mass in AGN
- Evidence for a relativistic iron line in GRS 1915+105
- XMM-Newton observation of the Seyfert 1.8 ESO 113-G010: discovery of a highly redshifted iron line at 5.4 keV
- The structure and radiation spectra of illuminated accretion disks in AGN. II. Flare/spot model of X-ray variability
- Transient Relativistically-Shifted Lines as a Probe of Black Hole Systems
- The history of the iron K-alpha line profile in the Piccinotti AGN ESO198-G24
- Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole
- High Resolution X-ray Spectroscopy of the Fe K complex in IC 4329A
- Signatures of highly inclined accretion disks in Galactic Black Hole Candidates and AGNs
- Iron line profiles from black hole accretion discs with spiral velocity structure
- The XMM-Newton view of the relativistic spectral features in AXJ0447-0627
- Emission line profiles from self-gravitating toroids around black holes
- Emission Line Profiles from Self-Gravitating Thin Disks
- The narrow-line quasar NAB 0205+024 observed with XMM-Newton
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- Direct probe of the inner accretion flow around the supermassive black hole in NGC 2617
- XMM-Newton observation of the bright Seyfert 1 galaxy, MCG+8-11-11
- On the driver of relativistic effects strength in Seyfert galaxies
- Theoretical aspects of relativistic spectral features
- General Relativity effects and line emission
- Electromagnetic signatures of strong-field gravity from accreting black holes
- An XMM-Newton view of the X-ray flat radio-quiet quasar PG 1416-129