Article

The X-ray jet and lobes of PKS 1354+195 (=4C 19.44)

University of Maryland, Baltimore County Baltimore MD USA; University of Bristol Department of Physics Bristol UK; Department of Physics, University of Durham Durham UK; Florida Institute of Technology Melbourne FL USA; GSFC Greenbelt MD USA; NRAO Charlottesville VA USA
Astrophysics and Space Science (impact factor: 1.69). 09/2007; 311(1):341-345. DOI:10.1007/s10509-007-9548-y

ABSTRACT We present a Chandra image of the quasar, jet, and lobes of PKS 1354+195 (=4C 19.44). The radio jet is 18 arcsec long, and appears to be very
straight. The length gives many independent spatial resolution elements in the Chandra image while the straightness implies that the geometrical factors are constant along the jet although their values are uncertain.
We also have 4 frequency radio images with half to one arcsecond angular resolution, and use HST and Spitzer data to study
the broad band spectral energy distributions. The X-ray and radio spectra are both consistent with a spectrum f

ν

∝
ν
−0.7 for the integrated jet. Using that spectral index, the model of inverse Compton scattering of electrons on the cosmic microwave
background (IC/CMB) gives magnetic field strengths and Doppler factors that are relatively constant along the jet. Extended
X-ray emission is evident in the direction of the otherwise unseen counter-jet. X-ray emission continues past the radio jet
to the South, and is detected within both the southern and northern radio lobes.

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Keywords

arcsecond angular resolution
 
broad band spectral energy distributions
 
Chandra image
 
consistent
 
Doppler factors
 
electrons
 
independent spatial resolution elements
 
integrated jet
 
inverse Compton scattering
 
magnetic field strengths
 
northern radio lobes
 
radio jet
 
radio spectra
 
Spitzer data
 
unseen counter-jet
 
values
 
X-ray
 
X-ray emission