Friday, October 5, 2012

Papers: Buoyant Magnetic Loops in a Global Dynamo Simulation of a Young Sun

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  • Nelson, Nicholas J., Brown, Benjamin P., Brun, Allan Sacha, Miesch, Mark S., & Toomre, Juri. 2011. "Buoyant Magnetic Loops in a Global Dynamo Simulation of a Young Sun", The Astrophysical Journal Letters, Volume 739, Issue 2, L38

Longitudinal magnetic field as a function of radius and latitude at successive times. Two buoyant magnetic structures are captured here,
 This letter introduced a dynamo simulation of a sun-like star which produced buoyant magnetic loops.  The simulation, which we call case S3, uses an improved treatment of diffusion which allowing the simulation to be much more turbulent than was previously possible.

Papers: Global magnetic cycles in rapidly rotating younger suns

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  • Nelson, Nicholas J., Brown, Benjamin P., Browning, Matthew K., Brun, Allan Sacha, Miesch, Mark S., & Toomre, Juri. 2011, "Global magnetic cycles in rapidly rotating younger suns", The Physics of Sun and Star Spots, Proceedings of the International Astronomical Union, IAU Symposium, Volume 273, p. 272-275
This paper was based on a conference talk given at the IAU Symposium #273: The Physics of Sun and Star Spots in Ventura, California in August 2010. I ran and analysed all but one of the simulations here.  Ben Brown was instrumental in developing many of the analysis techniques used. Mark, Sacha, and Juri played key roles in the formulation and analysis of the simulations. This was the first presentation of buoyant magnetic loops in ASH simulations.

Papers: Strong Dynamo Action in Rapidly Rotating Suns

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  • Brown, Benjamin P., Browning, Matthew K., Brun, Allan Sacha, Miesch, Mark S., Nelson, Nicholas J., & Toomre, Juri, 2007, "Strong Dynamo Action in Rapidly Rotating Suns", in UNSOLVED PROBLEMS IN STELLAR PHYSICS: A Conference in Honor of Douglas Gough. AIP Conference Proceedings, Volume 948, pp. 271-27
My contribution was in running and analysing one of the three simulations presented here.