118 citations · 210 across the 6 of their papers we have counts for
6 papers
Inference of solar rotation from perturbations of acoustic mode eigenfunctions
Ariane Schad, Markus Roth
Today's picture of the internal solar rotation rate profile results essentially from helioseismic analyses of frequency splittings of resonant acoustic waves. Here we present anoth…
The Direct Effect of Toroidal Magnetic Fields on Stellar Oscillations: An Analytical Expression for the General Matrix Element
René Kiefer, Ariane Schad, Markus Roth
Where is the solar dynamo located and what is its modus operandi? These are still open questions in solar physics. Helio- and asteroseismology can help answer them by enabling us t…
Stellar magnetic activity and variability of oscillation parameters - An investigation of 24 solar-like stars observed by Kepler
René Kiefer, Ariane Schad, Guy Davies +1
Context. The Sun and solar-like stars undergo activity cycles for which the underlying mechanisms are not well understood. The oscillations of the Sun are known to vary with its ac…
Recent Developments in Helioseismic Analysis Methods and Solar Data Assimilation
Ariane Schad, Laurene Jouve, Tom L. Duvall +2
We review recent advances and results in enhancing and developing helioseismic analysis methods and in solar data assimilation. In the first part of this paper we will focus on sel…
Determination of fundamental asteroseismic parameters using the Hilbert transform
René Kiefer, Ariane Schad, Wiebke Herzberg +1
Context. Solar-like oscillations exhibit a regular pattern of frequencies. This pattern is dominated by the small and large frequency separations between modes. The accurate determ…
Global helioseismic evidence for a deeply penetrating Solar meridional flow consisting of multiple flow cells
A. Schad, J. Timmer, M. Roth
We use a novel global helioseismic analysis method to infer the meridional flow in the deep Solar interior. The method is based on the perturbation of eigenfunctions of Solar p mod…