Determination of several parameters of BL Lacertae objects and relativistic beaming

Details Determination of several parameters of BL Lacertae objects and relativistic beaming Determination of several parameters of BL Lacertae objects and relativistic beaming

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...220...89x&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 220, no. 1-2, Aug. 1989, p. 89-91. Research supported by the National Natural

Astronomy and Astrophysics

Astronomy

26

Bl Lacertae Objects, Luminosity, Relativistic Particles, Accretion Disks, Black Holes (Astronomy), Secular Variations

Scientific paper

Analysis of the variability timescale-bolometric luminosity relation for seven BL Lacertae objects shows that the inferred efficiency of conversion of accreted matter into energy is larger that 0.1. Their parameters, including the bulk relativistic Doppler factor delta, the mass M of the central black hole, and the dimensionless parameter lambda have been estimated. Evidence for relativistic beaming in these BL Lac objects is discussed.

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