The Properties of Parsec-Scale Blazar Jets. (arXiv:1811.04999v1 [astro-ph.GA])

The Properties of Parsec-Scale Blazar Jets. (arXiv:1811.04999v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Finke_J/0/1/0/all/0/1">Justin D. Finke</a>

I show that by assuming a standard Blandford-Konigl jet, it is possible to
determine the bulk Lorentz factor and angle to the line of sight of
self-similar parsec-scale blazar jets by using five measured quantities:
redshift, core radio flux, extended radio flux, the magnitude of the core shift
between two frequencies, and apparent jet opening angle. From the bulk Lorentz
factor and angle computed with this method, one can compute other jet
properties such as the Doppler factor, magnetic field strength, and intrinsic
jet opening angle. I use data taken from the literature and marginalize over
nuisance parameters associated with the electron distribution and equipartition
to compute these quantities, although the errors are large. Results are
generally consistent with constraints from other methods. Primary sources of
uncertainty are the errors on the core shift measurements and the uncertainty
in the electron spectral index.

I show that by assuming a standard Blandford-Konigl jet, it is possible to
determine the bulk Lorentz factor and angle to the line of sight of
self-similar parsec-scale blazar jets by using five measured quantities:
redshift, core radio flux, extended radio flux, the magnitude of the core shift
between two frequencies, and apparent jet opening angle. From the bulk Lorentz
factor and angle computed with this method, one can compute other jet
properties such as the Doppler factor, magnetic field strength, and intrinsic
jet opening angle. I use data taken from the literature and marginalize over
nuisance parameters associated with the electron distribution and equipartition
to compute these quantities, although the errors are large. Results are
generally consistent with constraints from other methods. Primary sources of
uncertainty are the errors on the core shift measurements and the uncertainty
in the electron spectral index.

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