Numerical simulations of kinematic dynamo action in steady and three-dimensional ABC flows are presented with special focus on the difference in growth rates...
Numerical simulations of large-amplitude oscillations in flux rope solar prominences
Context. Large-amplitude oscillations (LAOs) of solar prominences are a very spectacular, but poorly understood, phenomena. These motions have amplitudes larger...
Numerical simulations of linear magnetohydrodynamic waves in two-dimensional force-free magnetic fields
High resolution observations of the solar corona made with instruments onboard the SOHO and TRACE spacecrafts have provided new evidence for the presence of...
Numerical simulations of prominence oscillations triggered by external perturbations
Context. Several energetic disturbances have been identified as triggers of large-amplitude oscillations (LAOs) in prominences. Observations show that Moreton...
Numerical simulations of quiet Sun magnetic fields seeded by the Biermann battery
The magnetic fields of the quiet Sun cover at any time more than 90% of its surface and their magnetic energy budget is crucial to explain the thermal structure...
Numerical simulations of the pulsating DB white dwarf GD 358
The numerical simulation method for variable white dwarfs of Ising & Koester (2001) is extended to variable DB stars (DBVs or V777 Herculis stars). We find the...
O-star mass-loss and wind momentum rates in the Galaxy and the Magellanic Clouds Observations and theoretical predictions.
A new, very fast approximate method is presented to determine mass-loss rates of O-stars from Halpha_ line profiles. The method uses H and HeII departure...
OB stars at the lowest Local Group metallicity. GTC-OSIRIS observations of Sextans A
Context. Massive stars play an important role in the chemical and dynamical evolution of the Universe. The first metal-poor stars may have started the...
Obliquity measurement and atmospheric characterisation of the WASP-74 planetary system
We present new transit observations of the hot Jupiter WASP-74 b (T eq ~ 1860 K) using the high-resolution spectrograph HARPS-N and the multi-colour...