3 citations · 3 across the 2 of their papers we have counts for
4 papers · 1 filter
The shock-patterned solar chromosphere in the light of ALMA
S. Wedemeyer-Boehm, H. -G. Ludwig, M. Steffen +2
Recent three-dimensional radiation hydrodynamic simulations by Wedemeyer et al. (2004) suggest that the solar chromosphere is highly structured in space and time on scales of only…
3D Simulation of Convection and Spectral Line Formation in A-type Stars
M. Steffen, B. Freytag, H. -G. Ludwig
We present first realistic numerical simulations of 3D radiative convection in the surface layers of main sequence A-type stars with Teff = 8000 K and 8500 K, log g = 4.4 and 4.0,…
A calibration of the mixing-length for solar-type stars based on hydrodynamical simulations - I. Methodical aspects and results for solar metallicity
H. -G. Ludwig, B. Freytag, M. Steffen
Based on detailed 2D numerical radiation hydrodynamics (RHD) calculations of time-dependent compressible convection, we have studied the dynamics and thermal structure of the conve…
Overtures to the pulsational instability of ZZ Ceti variables
Alfred Gautschy, Hans-Günter Ludwig, Bernd Freytag
Results of nonradial, nonadiabatic pulsation calculations on hydrogen-rich white dwarf models are presented. In contrast to earlier attempts, the modeling builds on hydrodynamicall…