Wu, P., Perri, S., Osman, K. T., Wan, M., Matthaeus, W. H., Shay, M. A., Goldstein, M. L., Karimabadi, H. and Chapman, Sandra C. (2013) Intermittent heating in solar wind and kinetic simulations. Astrophysical Journal, Volume 763 (Number 2). L30. doi:10.1088/2041-8205/763/2/L30 ISSN 0004-637X.

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Abstract

Low-density astrophysical plasmas may be described by magnetohydrodynamics at large scales, but require kinetic description at ion scales in order to include dissipative processes that terminate the cascade. Here kinetic plasma simulations and high-resolution spacecraft observations are compared to facilitate the interpretation of signatures of various dissipation mechanisms. Kurtosis of increments indicates that kinetic scale coherent structures are present, with some suggestion of incoherent activity near ion scales. Conditioned proton temperature distributions suggest heating associated with coherent structures. The results reinforce the association of intermittent turbulence, coherent structures, and plasma dissipation.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Astrophysical Journal
Publisher:	IOP Publishing
ISSN:	0004-637X
Official Date:	1 February 2013
Dates:	Date Event 1 February 2013 Published 14 January 2013 Available 28 December 2012 Accepted
Volume:	Volume 763
Number:	Number 2
Article Number:	L30
DOI:	10.1088/2041-8205/763/2/L30
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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