Physics – Plasma Physics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..dppkp1068i&link_type=abstract
American Physical Society, 43rd Annual Meeting of the APS Division of Plasma Physics October 29 - November 2, 2001 Long Beach, C
Physics
Plasma Physics
Scientific paper
A Hall plasma consists of a ``light'' electron fluid frozen into the magnetic field and a ``heavy'' ion fluid unaffected by the magnetic field. Over the past 15 years, the phenomenon of magnetic field penetration in a Hall collisional plasma, or shock wave magnetic penetration in a collisionless Hall plasma, has been investigated in theory, in numerical simulations, and in experiment. This research may be applied to astrophysical phenomena such as, for example, accreting stellar disks, in which temperatures are low enough that the Hall approximation (``fixed'' charged dust and an electron fluid) may be made. Here, axisymmetric magnetic structures transporting current (but not matter) along Hall jets are analyzed analytically and numerically, in the relevant physical regimes of astrophysical Hall plasmas. The results are then compared to the semi-periodic travelling structures recently observed in the jet of T Tauri object HH30.
Islam Tanim
Rudakov Leonid
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