19 citations · 107 across the 10 of their papers we have counts for
10 papers
Validating Forward Modeling and Inversions of Helioseismic Holography Measurements
K. DeGrave, D. C. Braun, A. C. Birch +2
Here we use synthetic data to explore the performance of forward models and inverse methods for helioseismic holography. Specifically, this work presents the first comprehensive te…
Helioseismic holography of simulated sunspots: magnetic and thermal contributions to travel times
T. Felipe, D. C. Braun, A. D. Crouch +1
Wave propagation through sunspots involves conversion between waves of acoustic and magnetic character. In addition, the thermal structure of sunspots is very different than that o…
Resolving the Azimuthal Ambiguity in Vector Magnetogram Data with the Divergence-Free Condition: Implementations for Disambiguating Each Height Independently
Ashley D. Crouch
We continue the investigation of how to use the divergence-free condition to resolve the azimuthal ambiguity present in vector magnetogram data. In previous articles, by Crouch, Ba…
Evaluation of the capability of local helioseismology to discern between monolithic and spaghetti sunspot models
T. Felipe, A. D. Crouch, A. C. Birch
The helioseismic properties of the wave scattering generated by monolithic and spaghetti sunspots are analyzed by means of numerical simulations. In these computations, an incident…
Numerical simulations of multiple scattering of the mode by flux tubes
T. Felipe, A. D. Crouch, A. C. Birch
We use numerial simulations to study the absorption and phase shift of surface-gravity waves caused by groups of magnetic flux tubes. The dependence of the scattering coefficients…
Least-Squares Fitting Methods for Estimating the Winding Rate in Twisted Magnetic-Flux Tubes
Ashley D. Crouch
We investigate least-squares fitting methods for estimating the winding rate of field lines about the axis of twisted magnetic-flux tubes. These methods estimate the winding rate b…