The Forward Problem in Sunspot Seismology

Details The Forward Problem in Sunspot Seismology The Forward Problem in Sunspot Seismology

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spd....28.0208r&link_type=abstract

American Astronomical Society, SPD meeting #28, #02.08; Bulletin of the American Astronomical Society, Vol. 29, p.894

Astronomy and Astrophysics

Astronomy

Scientific paper

Observations of the interaction of p -modes with sunspots show strong absorption and scattering which each show a systematic pattern of variation as a function of frequency and wavenumber. Our goal of inferring the sub-surface structure of sunspots from such data has been difficult to achieve because of the many complexities involved in the wave/spot interaction. However, the basic wave-transformation processes involved are now relatively well understood. We have therefore proceeded to the next step of constructing a fully two-dimensional numerical model of the interaction of solar oscillations with a sunspot. In a simple slab geometry, in which the field is everywhere vertical, we find that modes confined to the region close to the surface show absorption and scattering profiles comparable to those measured on the Sun. However, deeper modes pass through our model sunspot virtually unaffected. We conclude that our basic mode-transformation mechanism can adequately explain the properties of real sunspots, but that the actual structure of a sunspot must involve a magnetic field which increases substantially with depth below the photosphere if it is to explain the strength of the observed interaction.

Affiliated with

Also associated with

No associations

Rating

The Forward Problem in Sunspot Seismology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Forward Problem in Sunspot Seismology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Forward Problem in Sunspot Seismology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1146650