activity
19972024
most citedSeismic evidence for a rapidly rotating core in a lower-giant-branch star observed with Kepler

402 citations · 5k across the 157 of their papers we have counts for

collaborators

157 papers

astro-ph.SR2024

Inferring solar differential rotation and viscosity via passive imaging with inertial waves

Tram Thi Ngoc Nguyen, Thorsten Hohage, Damien Fournier +1

The recent discovery of inertial waves on the surface of the Sun offers new possibilities to learn about the solar interior. These waves are long-lived with a period on the order o…

astro-ph.SR2024★ 1 cited

Learned infinite elements for helioseismology -- Learning transparent boundary conditions for the solar atmosphere

Damien Fournier, Janosch Preuss, Thorsten Hohage +1

Context. Acoustic waves in the Sun are affected by the atmospheric layers, but this region is often ignored in forward models due to the increase in computational cost. Aims. The p…

astro-ph.SR2024

Assembling algorithm for Green's tensors and absorbing boundary conditions for Galbrun's equation in radial symmetry

Ha Pham, Florian Faucher, Damien Fournier +2

Solar oscillations can be modeled by Galbrun's equation which describes Lagrangian wave displacement in a self-gravitating stratified medium. For spherically symmetric backgrounds,…

math.NA2023★ 4 cited

Quantitative passive imaging by iterative holography: The example of helioseismic holography

Björn Müller, Thorsten Hohage, Damien Fournier +1

In passive imaging, one attempts to reconstruct some coefficients in a wave equation from correlations of observed randomly excited solutions to this wave equation. Many methods pr…

astro-ph.SR2023★ 4 cited

A Babcock-Leighton dynamo model of the Sun incorporating toroidal flux loss and the helioseismically-inferred meridional flow

S. Cloutier, R. H. Cameron, L. Gizon

We investigate whether the Babcock-Leighton flux-transport dynamo model remains in agreement with observations if the meridional flow profile is taken from helioseismic inversions.…

astro-ph.SR2023★ 5 cited

Detecting active latitudes of Sun-like stars using asteroseismic a-coefficients

Othman Benomar, Masao Takata, Michael Bazot +3

We introduce a framework to measure the asphericity of Sun-like stars using , and coefficients, and constrain their latitudes of magnetic activity. Systematic erro…