Line profiles from a disk around a rotating black hole

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170257· OSTI ID:5225707

Laor, A ^[1]

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1. Institute for Advanced Study, Princeton, NJ (United States)

The present calculations of line profiles emitted from an accretion disk around a rotating black hole were conducted for a number of line emissivity laws and with emphasis on cases where most of the flux has its origin in the inner regions of the disk. Most emissivity laws produce a broad, single-peaked line; the line is significantly asymmetric in most cases, with a deep blue wing and an extended red wing. The line peak is in most cases blueshifted, and such strong relativistic effects as a blueshift of over 30 percent are uniquely associated with rotating black holes. Since extant observations show no such effects, most of the observed line is generated outside the innermost disk. 22 refs.

• OSTI ID: 5225707
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 376; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCRETION DISKS
BLACK HOLES
ELEMENTS
EMISSIVITY
GALAXIES
GALAXY NUCLEI
IRON
METALS
MILKY WAY
MOTION
OPTICAL PROPERTIES
ORIGIN
PHYSICAL PROPERTIES
ROTATION
SPECTRA
SURFACE PROPERTIES
TRANSITION ELEMENTS
X-RAY SPECTRA