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astro-ph2005
Planetesimal growth in turbulent discs before the onset of gravitational instability
Alexander Hubbard, Eric G. Blackman
It is difficult to imagine a planet formation model that does not at some stage include a gravitationally unstable disc. Initially unstable gas-dust discs may form planets directly…
astro-ph2003
How magnetic helicity ejection helps large scale dynamos
A. Brandenburg, E. G. Blackman, G. R. Sarson
There is mounting evidence that the ejection of magnetic helicity from the solar surface is important for the solar dynamo. Observations suggest that in the northern hemisphere the…