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Intermittent dissipation at kinetic scales in collisionless plasma turbulence
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Wan, M., Matthaeus, W. H., Karimabadi, H., Roytershteyn, V., Shay, M., Wu, P., Daughton, W., Loring, B. and Chapman, Sandra C. (2012) Intermittent dissipation at kinetic scales in collisionless plasma turbulence. Physical Review Letters, Volume 109 (Number 19). Article no. 195001. doi:10.1103/PhysRevLett.109.195001 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.109.195001
Abstract
High resolution kinetic simulations of collisionless plasma driven by shear show the development of turbulence characterized by dynamic coherent sheetlike current density structures spanning a range of scales down to electron scales. We present evidence that these structures are sites for heating and dissipation, and that stronger current structures signify higher dissipation rates. Evidently, kinetic scale plasma, like magnetohydrodynamics, becomes intermittent due to current sheet formation, leading to the expectation that heating and dissipation in astrophysical and space plasmas may be highly nonuniform and patchy.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 2012 | ||||
| Dates: |
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| Volume: | Volume 109 | ||||
| Number: | Number 19 | ||||
| Page Range: | Article no. 195001 | ||||
| DOI: | 10.1103/PhysRevLett.109.195001 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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