On the generation of magnetic fields in active star atmospheres

Details On the generation of magnetic fields in active star atmospheres On the generation of magnetic fields in active star atmospheres

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.311..279h&link_type=abstract

In ESA, Plasma Astrophysics p 279-281 (SEE N91-15046 06-90)

Astronomy and Astrophysics

Astrophysics

Active Galaxies, Astronomical Models, Magnetic Fields, Mathematical Models, Pinch Effect, Plasma Compression, Stellar Atmospheres, Thermonuclear Reactions, Magnetic Flux, Stellar Flares

Scientific paper

A simple model of magnetic flux tube emergence is used to show the sharp decrease of plasma beta in the chromosphere of active stars and of the Sun as the heigth increases. This free magnetic field is unstable in relation to compression. It leads to impulsive magnetic energy transformation into thermal and kinetic plasma energy by pinch effect, which can manifest as a flare phenomenon.

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