The Propagation of Sound Waves in a Randomly Magnetized Medium. II. The Interaction of an Unsteady Wave Packet with an Ensemble of Magnetic Flux Tubes

Abstract

view Abstract Citations (20) References (5) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Propagation of Sound Waves in a Randomly Magnetized Medium. II. The Interaction of an Unsteady Wave Packet with an Ensemble of Magnetic Flux Tubes Ryutova, M. P. ; Priest, E. R. Abstract The interaction of an unsteady wave packet of acoustic waves with plasma containing ensembles of random magnetic flux tubes and the physical mechanisms of energy transfer to the plasma are described. It is shown that the propagation of an acoustic wave-packet in the randomly magnetized solar atmosphere is accompanied by clear morphological effects which include the spreading of the energy absorption region over scales much larger than the size of the initial wave packet, and which, in principle, can be observed. The regions of an efficient energy input and their localization crucially depend on the distribution of magnetic flux tubes in space and over their physical parameters (including noncollinearity). The very existence of these effects is determined by the fact that the solar atmosphere is randomly magnetized, and magnetic flux tubes are essentially nonidentical. The results may be useful for the diagnostics of the visible layers of the solar atmosphere and magnetic helioseismology. Publication: The Astrophysical Journal Pub Date: December 1993 DOI: 10.1086/173490 Bibcode: 1993ApJ...419..371R Keywords: MAGNETOHYDRODYNAMICS: MHD; PLASMAS; SUN: MAGNETIC FIELDS full text sources ADS | Related Materials (1) Part 1: 1993ApJ...419..349R