Color Photographs of an Accretion Disk around a Black Hole
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概要
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Color photographs of a geometrically thin relativistic accretion disk around a Schwarzschild black hole are obtained and displayed. Photographs in optical and X-ray wavelengths as well as a bolometirc picture are also obtained and compared with one another. When the temperature at the inner region of the disk is some K, the X-ray and bolometric images are rather contrasty, while the brightness of the disk in the optical image gradually decreases from the inner region toward the fringe. X-ray lightcurves when the relativistic accretion disk is eclipsed by its companion are calculated. It is demonstrated that light curves exhibit asymmetric profiles due to the relativistic Doppler effect by the disk rotation. This light curve asymmetry inherent in the relativistic disk provides an alternative strategy to search for and detect the accretion disk around a compact object. Such an observation will verify the disk model and bring the space-time information near the compact object.
- Astronomical Society of Japanの論文
Astronomical Society of Japan | 論文
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