- Conference date: 17-31 June 2002
- Location: Pisa (Italy)
In order to interpret the fluxes of particles accelerated at corotating interaction regions and to forecast the solar energetic particle events, the propagation of energetic particles is investigated numerically. Particle transport is influenced in a strong way by the magnetohydrodynamic turbulence in the solar wind. We carried out a simulation in which ions are injected in a numerical realization of magnetic turbulence superimposed on a background uniform magnetic field. Particle transport is studied as a function of particle energy, pitch angle distribution, turbulence level, and turbulence anisotropy with parameter values appropriate to the solar wind. The ratio of perpendicular to parallel diffusion coefficients is estimated. For strong enough turbulence δB/B 0 ∼ 1, as typical of the solar wind, we find that the particle pitch‐angle distribution is quickly isotropized, and that perpendicular transport grows with the particle energy. Varying the turbulence anisotropy, that is the turbulence correlation lengths l ∥ and l ⊥, we find that in the cases with l ∥ ≫ l ⊥ (i.e., in the limit of 2D turbulence) the particle perpendicular transport is faster than in the cases with l ∥ ≪ l ⊥ (i.e., for the so called slab turbulence).
- Turbulent flows
- Turbulent transport processes
- Solar wind
- Solar energy
- Wind energy
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
Data & Media loading...
Article metrics loading...