Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301...50h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 1, 1986, p. 50-56.
Astronomy and Astrophysics
Astronomy
35
Astronomical Models, Bl Lacertae Objects, Extragalactic Radio Sources, Radio Jets (Astronomy), Relativistic Particles, Astronomical Spectroscopy, Compton Effect, Interstellar Magnetic Fields, Nonthermal Radiation, Particle Acceleration, Synchrotron Radiation
Scientific paper
The development of a relativistic jet model and its use in fitting coordinated observations of the BL Lacertae objects Mrk 180, Mrk 421, and Mrk 501 are described. This model is a modified version of one by Koenigl (1981). The present model fits show that the properties of the jets in all three objects are similar. The variation in the angle between the jet axis and the observer's line of sight accounts for the differing degrees of variability of the sources. For the case where the jet is seen close to the line of sight (Mrk 421), the Doppler enhanced nonthermal radiation dominates the optical flux. The variation of particle density and magnetic field strength along the jets is similar in all three sources, and suggests that the energy flux is dominated by the magnetic field in the inner regions and by the particle energy at large distances from the jet apex. This result is consistent with models of jets in which the Poynting flux drives particle acceleration at large jet radii.
Hutter Donald J.
Mufson Stuart Lee
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