67 citations · 184 across the 13 of their papers we have counts for
13 papers
Astronomical observatory publications: information exchange before the Internet era
O. Ellegaard, S. B. F. Dorch
For decades, perhaps even centuries, the exchange of publications between observatories was the most important source of information on new astronomical results, either in the form…
The history of the observatory library at Østervold in Copenhagen, Denmark
S. B. F. Dorch, J. O. Petersen
About fifty years after the work that astronomer Tycho Brahe carried out while living on the island of Hven had made him world famous, King Christian IV of Denmark built the Trinit…
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…