A new classification and a two-parameter unification of BL Lacertae objects

Details A new classification and a two-parameter unification of BL Lacertae objects A new classification and a two-parameter unification of BL Lacertae objects

1997-02-21

arxiv.org/abs/astro-ph/9702197v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures. Presented at the workshop on 'Blazars, black holes and jets' (Girona, Spain, 9-12 September 1996); paper t

Scientific paper

A new continuous classification system for BL Lacertae (BL Lac) objects is proposed. The peak frequency of the synchrotron component in the $\nu L_{\nu}$ spectrum is used as a classifying parameter. The application of the accelerating inner jet model to complete BL Lac samples suggests that the range of the observed properties may be explained by adopting a description based on two parameters: the jet angle to the line of sight, and the relativistic electron kinetic luminosity.

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