What can we learn about extragalactic radio jets from X-ray data?

Details What can we learn about extragalactic radio jets from X-ray data? What can we learn about extragalactic radio jets from X-ray data?

2003-02-05

arxiv.org/abs/astro-ph/0302097v2

Astronomy and Astrophysics

Astrophysics

8 pages with 2 embedded b/w figures. To be published in "Radio Astronomy at the Fringe", ASP Conference Series, Zensus, Cohen,

Scientific paper

We review the current status of resolved X-ray emission associated with extragalactic radio jets and hotspots. The primary question for any particular jet is to decide if the X-rays come from the synchrotron process or from inverse Compton scattering. There is considerable evidence supporting synchrotron emission for knots in the jets of FRI galaxies. For FRII terminal hotspots detected in the X-ray band, synchrotron self-Compton emission continues to provide viable models with one possible exception (so far). Inverse Compton scattering on photons of the cosmic microwave background is indicated for a few powerful jets, and is expected to be an important contributor if not the dominating mechanism for higher redshift objects. The application of a model generally yields physical parameters and in many cases, these include the Doppler boosting factor.

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