67 citations · 184 across the 13 of their papers we have counts for
11 papers · 1 filter
Buoyant magnetic flux ropes in a magnetized stellar envelope: Idealized numerical 2.5-D MHD simulations
S. B. F. Dorch
Context: The context of this paper is buoyant toroidal magnetic flux ropes, which is a part of flux tube dynamo theory and the framework of solar-like magnetic activity. Aims: The…
Dynamo action in M-dwarfs
S. B. F. Dorch, B. V. Gudiksen, H. -G. Ludwig
Magnetic activity in M-dwarfs present enigmatic questions: On the one hand they have higher field strengths and larger filling factors than the magnetic field on the Sun, on the ot…
On the Saturation of Astrophysical Dynamos: Numerical Experiments with the No-cosines flow
S. B. F. Dorch, V. D. Archontis
In the context of astrophysical dynamos we illustrate that the no-cosines flow, with zero mean helicity, can drive fast dynamo action and study the dynamo's mode of operation durin…
Dynamo action in late-type giants
S. B. F. Dorch
Recent numerical MHD simulations suggest that magnetic activity may occur in late-type giants. A entire red supergiant with stellar parameters equal to Betelgeuse was modelled in 3…
Magnetic activity in late-type giant stars: Numerical MHD simulations of non-linear dynamo action in Betelgeuse
S. B. F. Dorch
Evidence is presented from numerical magneto-hydrodynamical simulations for the existence of magnetic activity in late-type giant stars. A red supergiant with stellar parameters si…
A Magnetic Betelgeuse? Numerical Simulations of Non-linear Dynamo Action
S. B. F. Dorch
Betelgeuse is an example of a cool super-giant displaying brightness fluctuations and irregular surface structures. Simulations by Freytag et al. (2002) of the convective envelope…