Multi-scale Hall-MHD turbulence in the solar wind

Details Multi-scale Hall-MHD turbulence in the solar wind Multi-scale Hall-MHD turbulence in the solar wind

2006-10-25

arxiv.org/abs/astro-ph/0610759v2

Astrophys.J.656:560-566,2007

Astronomy and Astrophysics

Astrophysics

7 pages, 4 figures

Scientific paper

10.1086/510423

Solar wind magnetic fluctuation spectra exhibit a significant power law steepening at frequencies f>1Hz. The origin of this multi-scaling is investigated through dispersive Hall magnetohydrodynamics. We perform three-dimensional numerical simulations in the framework of a highly turbulent shell model and show that the large-scale magnetic fluctuations are characterized by a k^-5/3-type spectrum which steepens at scales smaller than the ion inertial length d_i, to k^-7/3 if the magnetic energy overtakes the kinetic energy, or to k^-11/3 in the opposite case. These results are in agreement both with a heuristic description a la Kolmogorov, and with the range of power law indices found in the solar wind.

Affiliated with

Also associated with

No associations

Rating

Multi-scale Hall-MHD turbulence in the solar wind does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multi-scale Hall-MHD turbulence in the solar wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-scale Hall-MHD turbulence in the solar wind will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-378062