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Modeling, observing and understanding flows and magnetic fields in the Earth's core and in the Sun


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30th November 2020 to 4th December 2020
Matthew Browning
Peter Davidson
Chris Finlay
Laurene Jouve
Travis Metcalfe
Nathanael Schaeffer

**Following the outbreak of COVID19, the start date of this workshop has been deferred to 2022. Please visit the new workshop webpage here**


Workshop theme:

Like many other stars and planets, the Earth and the Sun possess magnetic fields built by dynamo action. Unlike the magnetism of most other astrophysical objects, though, the Solar and terrestrial fields have been closely studied for generations, yielding a wide variety of observational constraints that continue to challenge theory and defy prediction.  Both analytical theory and numerical simulations have cumulatively yielded significant insight into how both objects build their magnetism, but a comprehensive understanding of this process has remained elusive.  

This meeting will aim to scrutinise and assess the results of such modelling efforts by comparison to the vast and ongoing array of observations of both the Earth and the Sun.  By studying the detailed constraints provided by these two objects, we aim to gain insight into the dynamo process in stars and planets more generally. One aim of the meeting will be to examine the complementary constraints provided by direct numerical simulation and by other methods — e.g., reduced systems of equations valid in an appropriate asymptotic limit.  We may aim to identify future targets for numerical simulation, seeking both to identify tractable problems that could test mathematical dynamo theories, and to determine routes by which numerical models could be made more realistic. Another topic of interest is the role played by waves (influenced by rotation, magnetism, and buoyancy) in the dynamo process, and the prospects for using any observable signatures of such waves to infer information.  We will also discuss methods (including data assimilation techniques) that aim to turn dynamo models intro predictive tools, and assess the ultimate limits of such predictability.


Cancelled On: 
Wednesday 24th June 2020 - 17:06
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons