Mathematics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.5604l&link_type=abstract
American Astronomical Society, 194th AAS Meeting, #56.04; Bulletin of the American Astronomical Society, Vol. 31, p.912
Mathematics
Scientific paper
Inversions of rotational frequency splittings derived from helioseismic data obtained by the MDI instrument and the GONG network have given a detailed picture of the differential rotation in the convection zone (Schou et al. 1998). However, features associated with sharp gradients of the rotation rate such as jets, near surface shear layers (torsional oscillations) as well as the transition layer to the radiative interior (the "tachocline") are usually not well resolved. This is due to the smoothing applied by traditional inversion methods such as Regularized Least Squares (RLS) and Optimally Localized Averages (OLA). In this work we show how a generalized version of the method proposed by Thompson (1990) can used be to study these features by inverting directly for the radial or latitudinal derivative of the rotation rate. This research is supported by the SOI-MDI NASA grant NAG5-3077 at Stanford University. References: G.I. Marchuk, Methods of Numerical Mathematics, New York, Springer-Verlag, 1975. Schou, J. et al., 1998, Astrophys J., 505, 390. Thompson, M. J., 1990, Sol. Phys., 125, 1.
Kosovichev Aleksandr G.
Larsen Rasmus M.
Schou Jepser
No associations
LandOfFree
A New Technique for Inversion of Helioseismic Data 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 A New Technique for Inversion of Helioseismic Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A New Technique for Inversion of Helioseismic Data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1120767