Ep 65: Quasars
ToKCast
00:00
The Origins of the Radio Lobes
Lobes are produced by jets of charged particles ejected from the central nucleus over the active galactic nuclei at relativistic speeds. The jet must be electrically neutral overall but it is not clear whether the ejected material consists of electrons and ions or an electron positron plasma. A thick, hot accretion disk around the black hole could provide natural collimation by funneling the outflowing particles. Because the accreting material retains some angular momentum as it spirals inward through the disk it will tend to pile up at the smallest orbit that is compatible with its angular momentum.
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