Propagation of compressive waves through fibril magnetic fields

Details Propagation of compressive waves through fibril magnetic fields Propagation of compressive waves through fibril magnetic fields

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...312..444b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 312, Jan. 1, 1987, p. 444-456.

Astronomy and Astrophysics

Astrophysics

41

Compression Waves, Solar Magnetic Field, Sunspots, Wave Propagation, Acoustic Scattering, P Waves, Plane Waves, Solar Oscillations, Stellar Models

Scientific paper

The surface effects of interactions between the solar 5-min p-modes and the large-scale fibril magnetic field are discussed using a multiple scattering approach. Attention is given to the propagation of linear disturbances in a two-dimensional, highly conducting magnetized plasma with many parallel flux tubes in pressure equilibrium with a surrounding stationary field-free plasma. Multiple scattering in the fibril half-space is shown to generate acoustic waves that cascade to ever-smaller length scales. The scale reduction, proportional to the depth into the fibril magnetic field, is responsible for the damping of p-mode oscillations observed in plages.

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