Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...227l.117a&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 227, Feb. 1, 1979, p. L117-L120.
Astronomy and Astrophysics
Astronomy
9
Bl Lacertae Objects, Flux Density, Linear Polarization, Radio Sources (Astronomy), Long Term Effects, Particle Production, Relativistic Particles, Synchrotron Radiation
Scientific paper
Polarization and flux density data for BL Lac during a peculiar outburst in 1975 are presented. The variations of the flux density were quite different at 8.0 and 14.5 GHz, respectively. The behavior is inconsistent with simple homogeneous source models, but could have been produced in an inhomogeneous emitting region which was partially opaque due to synchrotron self-absorption. The type of behavior reported has occurred at least twice in this source. The data support the hypothesis that relativistic particle generation in extragalactic variable sources takes place continuously in a restricted region of the source over an extended time period.
Aller Hugh D.
Ledden J. E.
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