16 citations · 34 across the 9 of their papers we have counts for
9 papers
First snapshot of a magnetosphere around a Herbig Ae/Be star
S. P. Järvinen, S. Hubrig, M. Küker +6
The Herbig Ae/Be star HD190073 is one of the very few magnetic Herbig Ae/Be stars for which close low-mass companions have been reported. Previously published magnetic field measur…
Characterizing the dynamical magnetosphere of the extremely slowly rotating magnetic O9.7 V star HD 54879 using rotational modulation of the H profile
Manfred Küker, Silva Järvinen, Swetlana Hubrig +2
The magnetic field in the O9.7 V star HD54879 has been monitored for almost a decade. Spectropolarimetric observations reveal a rather strong mean longitudinal magnetic field that…
Numerical simulation of convection in K dwarfs
Manfred Küker
We have carried out numerical simulations of the convection zone in a K dwarf of 0.7 solar masses rotating at the solar rotation period. We study the convection pattern, the differ…
Angular momentum transport by magnetoconvection and the magnetic modulation of the solar differential rotation
Günther Rüdiger, Manfred Küker
In order to explain the variance of the solar rotation law during the activity minima and maxima, the angular momentum transport by rotating magnetoconvection is simulated in a con…
The turbulent pressure of magnetoconvection for slow and rapid rotation
M. Küker, G. Rüdiger
Motivated by recent simulations of sunspot formation, we extend the theory of the pressure difference between magnetized and non-magnetized gas by Dicke to include rotating turbule…
Mass loss and magnetospheres of massive stars
Manfred Küker
About ten percent of all OB stars show strong, large-scale surface magnetic fields. The interaction of the magnetic field and the wind is believed to be the cause for the X-ray emi…
Differential rotation and meridional flow of Arcturus
Manfred Küker, Günther Rüdiger
The spectroscopic variability of Arcturus hints at cyclic activity cycle and differential rotation. This could provide a test of current theoretical models of solar and stellar dyn…
Angular momentum transport in the solar supergranulation layer
G. Rüdiger, M. Küker
The eddy viscosity in the solar supergranulation layer is derived from the observed rotational shear by computing theoretical rotation laws for the outermost parts of the solar con…
Meridional flow and differential rotation by gravity darkening in fast rotating solar-type stars
G. Rüdiger, M. Küker
An explanation is presented for the rather strong total surface differential rotation of the observed very young solar-type stars like AB Dor and PZ Tel. Due to its rapid rotation…