Accretion magnetosphere stability. II - Polar CAP 'drip'

Details Accretion magnetosphere stability. II - Polar CAP 'drip' Accretion magnetosphere stability. II - Polar CAP 'drip'

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...216..838m&link_type=abstract

Astrophysical Journal, Part 1, vol. 216, Sept. 15, 1977, p. 838-841.

Astronomy and Astrophysics

Astrophysics

30

Earth Magnetosphere, Magnetohydrodynamic Flow, Magnetohydrodynamic Stability, Stellar Atmospheres, Stellar Mass Accretion, X Ray Sources, Cusps, Magnetic Stars, Magnetopause, Plasma-Electromagnetic Interaction, Polar Regions

Scientific paper

The entry of plasma past the shielding magnetic field of a collapsed object is examined. It is concluded that a plausible entry mode is simply a 'dripping' motion of the polar caps of the magnetopause, owing to radiation of the hot compressed plasma there. The plasma 'drips' would hit the object's surface either near the magnetic poles or in a ring-shaped 'auroral' zone around the poles. Insofar as this entry mode is concerned, no special role is played by finite plasma resistivity since the plasma can reach the stellar object even if the conductivity is infinite.

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