Magnetic Topology
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In
plasma physics Plasma () is a state of matter characterized by the presence of a significant portion of charged particles in any combination of ions or electrons. It is the most abundant form of ordinary matter in the universe, mostly in stars (including th ...
, the magnetic topology of a plasma is the structure and linkage of its
magnetic field A magnetic field (sometimes called B-field) is a physical field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular ...
. The magnetic topology of a plasma can be changed through
magnetic diffusion Magnetic diffusion refers to the motion of magnetic fields, typically in the presence of a conducting solid or fluid such as a plasma. The motion of magnetic fields is described by the magnetic diffusion equation and is due primarily to induction ...
and
reconnection Magnetic reconnection is a physical process occurring in electrically conducting Plasma (physics), plasmas, in which the magnetic topology is rearranged and magnetic energy is converted to kinetic energy, thermal energy, and particle accelerati ...
. In the limit of a large magnetic Reynolds number, however, diffusion and reconnection of the magnetic field cannot occur, and the magnetic topology is preserved.


See also

* Helmet streamer#Pseudostreamers


References

{{Plasma-stub Plasma theory and modeling