Measuring black hole mass through variable line profiles from accretion disks

Details Measuring black hole mass through variable line profiles from accretion disks Measuring black hole mass through variable line profiles from accretion disks

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.344..747s&link_type=abstract

Nature (ISSN 0028-0836), vol. 344, April 19, 1990, p. 747-749.

Astronomy and Astrophysics

Astronomy

82

Accretion Disks, Black Holes (Astronomy), Line Shape, Stellar Mass, Stellar Spectra, X Ray Spectra, Active Galactic Nuclei, Compton Effect, Emission Spectra, Red Shift, Schwarzschild Metric

Scientific paper

Detailed calculations are presented of the response of a line from a relativistic Keplerian disk to flux variations in the central regions. Two characteristic features form on opposite sides of the line, which, due to light travel-time effects, gradually drift from the line wings, corresponding to the innermost disk regions, to the blue and red horns. Observations of these line-profile changes could provide the first direct measurement of the mass of the central black hole in AGNs.

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