Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...20925101s&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #251.01; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
The jet in 4C 19.44 (=PKS 1354+195) provides an excellent test case to apply the model wherein the X-rays are inverse Compton scattered photons of the cosmic microwave background. We present a 220 ks Chandra image of this system. This target was chosen because the jet is 18 arcsec long, giving up to 23 independent resolution elements, and because it appears to be straight. The latter implies that the geometrical factors are constant along the jet, although their values are uncertain. We also have 4 frequency radio images with half arcsecond angular resolution. We will report on detailed comparison of the X-ray and radio spectral indices as a function of position along the jet. We find that the magnetic field strengths and Doppler factors are relatively constant along the jet, that the X-ray jet structure to the S extends beyond the prominent radio jet and connects to the southern radio lobe, and that there is extended X-ray emission from the southern and northern radio lobes. IC/CMB and alternate mechanisms for the production of the X-radiation are critically examined based on these results.
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