Coronal Seismology by MHD Autowaves

Details Coronal Seismology by MHD Autowaves Coronal Seismology by MHD Autowaves

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.547..483k&link_type=abstract

Proceedings of 'SOHO 13 - Waves, Oscillations and Small-Scale Transient Events in the Solar Atmosphere: A Joint View from SOHO a

Computer Science

1

Scientific paper

Slow magnetoacoustic waves are routinely observed in solar coronal structures. These waves can be strongly affected by non-adiabatic effects leading to self-organising compressible propagating disturbances -- magnetoacoustic autowaves. Autowaves are propagating disturbances which have parameters independent of the excitation that are determined by the parameters of the medium only and, consequently, are potentially an ideal tool for coronal seismology. The influence of non-adiabatic effects is studied and magnetoacoustic autowaves are modelled with the extended Burgers equation. A numerical code is developed to study the evolution of such waves and a parametric study is carried out. Observable parameters of coronal magnetoacoustic autowaves could provide a tool for the determination of heat deposition mechanisms in the corona.

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