Inverse Compton Analysis of the X-ray Jet in Quasar 4C 19.44

Details Inverse Compton Analysis of the X-ray Jet in Quasar 4C 19.44 Inverse Compton Analysis of the X-ray Jet in Quasar 4C 19.44

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21460308s&link_type=abstract

American Astronomical Society, AAS Meeting #214, #603.08

Astronomy and Astrophysics

Astronomy

Scientific paper

We have obtained a deep Chandra X-ray image of the z=0.72 quasar 4C 19.44 (PKS 1354+195). Our objectives included measuring the magnetic field and relativistic bulk velocity at many independent spatial elements along the jet. We assume minimum energy in the jet rest frame, and that the X-rays are produced by inverse Compton scattering on the cosmic microwave background. This approach is problematic because there are only two relations among the three relevant quantities: bulk Lorentz factor Γ the Doppler factor δ=1/(Γ (1-β cos (θ))), and the angle θ to the line of sight. Generally authors have assumed either Γ = δ or given a fixed fiducial value to Γ . We explore the consequences of a different assumption: that the kinetic energy flux carried along the jet is constant. For our calculation this lowers the kinetic energy flux about a factor of two, to 1047 ergs per s, while defining a mean angle to the line of sight of 6 degrees, within +/- 1 degree.

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