Eddington ratios as a constraint on the activity patterns of the active galactic nuclei

Details Eddington ratios as a constraint on the activity patterns of the active galactic nuclei Eddington ratios as a constraint on the activity patterns of the active galactic nuclei

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...333l..33c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 333, Oct. 15, 1988, p. L33-L36.

Astronomy and Astrophysics

Astronomy

53

Active Galactic Nuclei, Black Holes (Astronomy), Galactic Evolution, Quasars, Seyfert Galaxies, Stellar Luminosity, Accretion Disks, Gravitational Effects, Statistical Analysis

Scientific paper

If the activity in galactic nuclei derives from accretion onto a massive black hole, the Eddington ratio - i.e., the adimensional L/M - constitutes a good indicator for the effective duration of the activity in each single object; its average value is related to the numbers of galaxies involved. The authors discuss how the forthcoming measurements of nuclear masses in active and inactive galaxies can tell apart the three basic activity patterns.

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