Doppler Tomography of Relativistic Accretion Disks | Zendy

V. Karas | Zendy; Pavel Kraus | Zendy

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Doppler Tomography of Relativistic Accretion Disks

Author(s) -

V. Karas,

Pavel Kraus

Publication year - 1996

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/48.5.771

Subject(s) - physics , astrophysics , gravitational lens , doppler effect , angular momentum , gravitational field , astronomy , accretion (finance) , black hole (networking) , compact star , galaxy , angular resolution (graph drawing) , position angle , supermassive black hole , stars , classical mechanics , computer science , link state routing protocol , computer network , routing protocol , routing (electronic design automation) , mathematics , redshift , combinatorics

Spectral lines from a source orbiting around a compact object are studied.Time variations of observed frequency and count rate due to motion of thesource and gravitational lensing are considered. Gravitational field of thecentral object is described by the Kerr metric. It is shown that: (i)simultaneous temporal and frequency resolution enables us to restrictparameters of the model (inclination angle, position of the source, angularmomentum of the black hole); (ii) techniques of image restoration, familiarfrom other fields of astronomy, can be applied to study inner regions of activegalactic nuclei. This contribution is relevant for extremely variable X-raysources with high parameter of efficiency, such as Seyfert 1 galaxy PHL 1092observed by ROSAT.

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