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Dependence of the Characteristics of Solar Wind Discontinuities and Shocks with Heliolatitude and Radial Distance
Dickson Benjamin, A.; Prabhakaran Nayar, S. R.
The distribution of the shocks in the heliosphere and their characteristic variations are investigated using Ulysses observations. The jumps in solar wind velocity, IMF magnitude, and proton density across the shocks and discontinuities are evaluated and used to characterize them. The distribution of these discontinuities with respect to heliolati…
Global Effects of Local Sound-Speed Perturbations in the Sun: A Theoretical Study
Larson, T. P.; Hanasoge, S. M.
We study the effect of localized sound-speed perturbations on global mode frequencies by applying techniques of global helioseismology to numerical simulations of the solar acoustic wave field. Extending the method of realization-noise subtraction (e.g., Hanasoge, Duvall, and Couvidat, Astrophys. J.664, 1234, 2007) to global modes and exploiting t…