Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.311..341s&link_type=abstract
Astrophysics and Space Science, Volume 311, Issue 1-3, pp. 341-345
Astronomy and Astrophysics
Astrophysics
5
(Galaxies:) Quasars: Individual (4C 19.44, Pks 1354+135), Galaxies: Jets, X-Rays: Individual (4C 19.44, Pks 1354+135), Radio Continuum: General, Magnetic Fields
Scientific paper
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.
Birkinshaw Mark
Cheung Charlotte
Gelbord Jonathan Mark
Georganopoulos Markos
Harris Daniel E.
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