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Magnetic field generation by Biermann battery and Weibel instability in laboratory shock waves

Published online by Cambridge University Press:  13 February 2013

G. Gregori ,
F. Miniati ,
B. Reville  and
R.P. Drake
G. Gregori
Affiliation:
Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, UK
F. Miniati
Affiliation:
Department of Physics, ETH Zürich, Wolfgang-Pauli-Strasse 27, 8093 Zürich, Switzerland
B. Reville
Affiliation:
Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, UK
R.P. Drake
Affiliation:
Department of Atmospheric, Oceanic, Space Science, University of Michigan, 2455 Hayward St, Ann Arbor, MI 48103, USA

Abstract

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Magnetic field generation in the Universe is still an open problem. Possible mechanisms involve the Weibel instability, due to anisotropic phase-space distributions, as well as the Biermann battery, due to misaligned density and temperature gradients. These mechanisms can be reproduced in scaled laboratory experiments. In this contribution we estimate the relative importance of these two processes and explore the laser-energy requirements for producing Weibel dominated shocks.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 58: ECLA - European Conference on Laboratory Astrophysics , 2012 , pp. 23 - 26
Copyright
© The Author(s) 2013

References

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