Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..386..203g&link_type=abstract
Extragalactic Jets: Theory and Observation from Radio to Gamma Ray ASP Conference Series, Vol. 386, proceedings of the conferenc
Astronomy and Astrophysics
Astronomy
Scientific paper
We report the latest results from our Chandra quasar jet survey, the largest such survey yet conducted.
X-ray emission is detected from over 60% of the jets. This emission is interpreted through a model in which X-rays are produced by inverse Compton scattering of the cosmic microwave background (IC-CMB). The IC-CMB model indicates that the jets are aligned within 5--15° of the observed line of sight. To test this model we consider the distribution of the ratio of the X-ray and radio fluxes, R, with redshift. IC-CMB predicts that R should scale with redshift as (1+z)^a with a = 1.5--2.0. A fit to the distribution of R values in our survey gives a = 0.8 ± 1.7 at 90% confidence, consistent with the IC-CMB model. However, the scatter in R is large, even within a narrow redshift range, suggesting that there is considerable scatter in the intrinsic properties of the jets.
Birkinshaw Mark
Gelbord Jonathan Mark
Georganopoulos Markos
Godfrey L.
Jauncey David L.
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