- Conference date: 5-9 Oct 1998
- Location: Nantucket, Massachusetts (USA)
The transport of energetic particles in the heliosphere is strongly influenced by the magnetohydrodynamic turbulence found in the solar wind. The analysis of the variance matrix of the magnetic perturbations observed in the solar wind shows that magnetic turbulence can be well represented by anisotropic power law spectra for the Alfvénic and magnetosonic polarizations. The random walk of magnetic field lines is studied by means of a numerical realization of such turbulence, by varying the level of magnetic fluctuations and the degree of anisotropy. For high fluctuation levels, transport is faster in the direction where the correlation length is larger. In the solar wind, the largest correlation length appears to be in the direction normal to the plane, thus allowing fast latitudinal transport. The implications for energetic particle transport are discussed and compared to the observation of energetic particle events at high solar latitudes by the Ulysses spacecraft.
- Turbulent flows
- Solar wind
- Magnetic anisotropy
- Magnetic fields
- Solar magnetic fields
Daniel Baumann, Mark G. Jackson, Peter Adshead, Alexandre Amblard, Amjad Ashoorioon, Nicola Bartolo, Rachel Bean, Maria Beltrán, Francesco de Bernardis, Simeon Bird, Xingang Chen, Daniel J. H. Chung, Loris Colombo, Asantha Cooray, Paolo Creminelli, Scott Dodelson, Joanna Dunkley, Cora Dvorkin, Richard Easther, Fabio Finelli, Raphael Flauger, Mark P. Hertzberg, Katherine Jones‐Smith, Shamit Kachru, Kenji Kadota, Justin Khoury, William H. Kinney, Eiichiro Komatsu, Lawrence M. Krauss, Julien Lesgourgues, Andrew Liddle, Michele Liguori, Eugene Lim, Andrei Linde, Sabino Matarrese, Harsh Mathur, Liam McAllister, Alessandro Melchiorri, Alberto Nicolis, Luca Pagano, Hiranya V. Peiris, Marco Peloso, Levon Pogosian, Elena Pierpaoli, Antonio Riotto, Uroš Seljak, Leonardo Senatore, Sarah Shandera, Eva Silverstein, Tristan Smith, Pascal Vaudrevange, Licia Verde, Ben Wandelt, David Wands, Scott Watson, Mark Wyman, Amit Yadav, Wessel Valkenburg and Matias Zaldarriaga
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