paper

Testing the beamed inverse-Compton model for jet X-ray emission: velocity structure and deceleration?

arXiv:astro-ph/0511511 · doi:10.1111/j.1365-2966.2005.09923.x

Abstract

By considering a small sample of core-dominated radio-loud quasars with X-ray jets, I show, as has been argued previously by others, that the observations require bulk jet deceleration if all of the X-ray emission is to be explained using the widely adopted beamed inverse-Compton model, and argue that jets even in these powerful objects must have velocity structure in order to reconcile their radio and X-ray properties. I then argue that the deceleration model has several serious weaknesses, and discuss the viability of alternative models for the decline in X-ray/radio ratio as a function of position. Although inverse-Compton scattering from the jets is a required process and must come to dominate at high redshifts, adopting an alternative model for the X-ray emission of some nearby, well-studied objects can greatly alleviate some of the problems posed by these observations for the beamed inverse-Compton model.

10 pages, 3 figures. v2 accepted by MNRAS with no changes from v1, but updated to add a citation to a recent paper

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