Multiple-peaked line profiles from relativistic disks at high inclination angles

Details Multiple-peaked line profiles from relativistic disks at high inclination angles Multiple-peaked line profiles from relativistic disks at high inclination angles

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...267..643m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 267, no. 2, p. 643-650.

Astronomy and Astrophysics

Astronomy

46

Accretion Disks, Black Holes (Astronomy), Photons, Relativity, Schwarzschild Metric, Line Spectra, Particle Trajectories

Scientific paper

The profiles of lines from a flat, relativistic disk around a Schwarzschild black hole are computed with a rigorous treatment of the energy shifts and photon trajectories. It is found that, unless the disk is optically thin, further structures emerge between the two Doppler horns, at high (approximately greater than 80 deg) inclination angles. These structures are due to a geodesics focusing effect on photons emitted from the 'far' side of the disk. Their shape and relative intensity are a function of the radial dependence and angular distribution of the line emissivity. Since these structures are due to a purely general relativistic effect, they could provide an unambiguous signature of a relativistic disk in AGN and in X-ray binaries.

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