Radiation from arbitrarily shaped objects in the vicinity of Kerr black holes

Details Radiation from arbitrarily shaped objects in the vicinity of Kerr black holes Radiation from arbitrarily shaped objects in the vicinity of Kerr black holes

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.205..155v&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 205, no. 1, p. 155-161.

Astronomy and Astrophysics

Astronomy

6

Active Galactic Nuclei, Black Holes (Astronomy), Galactic Radiation, Accretion Disks, Angular Momentum, Kerr Effects

Scientific paper

The properties of images of rings in Kerr geometry in each order are examined, showing that there are two principally different image types, depending on whether the extended emitting object has surface elements with larger declination relative to the equatorial plane than does the observer. In this case, the assumption of infinitesimal thinness of the emitting object as used for the general relaltivistic flux transformation until now is an invalid approximation. Local images of a vertically extended accretion disk as seen by different observers are presented. They demonstrate the importance of taking into account the first indirect image as well.

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