The X-ray evidence for distributed acceleration in extragalactic jets

Details The X-ray evidence for distributed acceleration in extragalactic jets The X-ray evidence for distributed acceleration in extragalactic jets

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...1e..32h&link_type=abstract

Cosmic Particle Acceleration, 26th meeting of the IAU, Joint Discussion 1, 16-17 August, 2006, Prague, Czech Republic, JD01, #32

Computer Science

Scientific paper

There is strong evidence that the emission process responsible for the X-ray jets of FRI radio galaxies is synchrotron emission from extremely high energy relativistic electrons (Lorentz factors of order 10,000,000). These electrons typically have loss times of order a year, and thus the observed emitting volumes must also be the sites of acceleration. Although the X-ray jets of powerful radio galaxies and quasars are often interpreted on the basis of an inverse Compton model, there is mounting evidence that some or possibly all are also caused by synchrotron emission. We revisit the question of how to observationally locate strong shocks in jets, and then give a number of examples which supports the contention that a distributive acceleration scenario is required for some parts of some jets.

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