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Alfven's Theorem and a Neutron Star Core



 
 
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Old June 19th 11, 09:31 AM posted to sci.astro.research
Frisbieinstein
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Default Alfven's Theorem and a Neutron Star Core

Hannes Alfven (1943) wrote: “In view of the infinite conductivity,
every motion(perpendicular to the field) of the liquid in relation to
the lines of force is forbidden because it would give infinite eddy
currents. Thus the matter of the liquid is fastened to the lines of
force, constituting a series of strings.” In other words, the field
lines move as though they are frozen into the plasma.

In the superfluid, superconducting core of a neutron star this would
seem to lead to a contradiction. The superfluid is rotating as an
array of quantum vortices. It is believed that the core is a Type II
superconductor and so is permeated by a large number of tiny quantum
flux tubes. These flux tubes are believed to be pinned to the crust
and cannot pass through the core of a vortex, so I don’t understand
how they can be rotating with the vortices.

What have I missed?
 




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