174 citations · 1.1k across the 41 of their papers we have counts for
41 papers
Construction of adaptive exponential multi-operator splitting methods
Othmar Koch, Koray Acar, Winfried Auzinger +3
We construct splitting methods suitable for the solution of the equations of magnetohydrodynamics (MHD). Due to the physical significance of the involved operators, splittings into…
Stellar evolution models with overshooting based on 3-equation non-local theories, II. Main-sequence models of A- and B-type stars
Felix Ahlborn, Friedrich Kupka, Achim Weiss +1
Convective overshoot mixing is a critical ingredient of stellar structure models, but is treated in most cases by ad hoc extensions of the mixing-length theory for convection. Adva…
Stellar evolution models with overshooting based on 3-equation non-local theories I. Physical basis and the computation of the dissipation rate
F. Kupka, F. Ahlborn, A. Weiss
Context. Mixing by convective overshooting has long been suggested to play an important role for the amount of hydrogen available to nuclear burning in convective cores of stars. T…
Stellar evolution models with entropy-calibrated mixing-length parameter: application to red giants
Federico Spada, Pierre Demarque, Friedrich Kupka
We present evolutionary models for solar-like stars with an improved treatment of convection that results in a more accurate estimate of the radius and effective temperature. This…
Surface effects and turbulent pressure. Assessing the Gas- and Reduced- empirical models
K. Belkacem, F. Kupka, J. Philidet +1
The use of the full potential of stellar seismology is made difficult by the improper modeling of the upper-most layers of solar-like stars and their influence on the modeled frequ…
Shine BRITE: shedding light on stellar variability through advanced models
D. Fabbian, F. Kupka, D. Krueger +2
The correct interpretation of the large amount of complex data from next-generation (in particular, space-based) observational facilities requires a very strong theoretical underpi…