Please use this identifier to cite or link to this item:
http://library.iigm.res.in:8080/xmlui/handle/123456789/659
Title: | Ion temperature anisotropy instabilities in planetary magnetosheaths |
Authors: | Remya, B. Reddy, R.V. Tsurutani, B.T. Lakhina, G.S. Echer, E. |
Keywords: | Planetary magnetosheaths Ion cyclotron Ion temperature Electron-proton plasma |
Issue Date: | 2013 |
Citation: | JGR, v.118/2, p.785–793, 2013, doi: 10.1002/jgra.50091 |
Abstract: | There has been a lack of understanding why mirror modes are present in planetary magnetosheaths, at comets, and in the heliosheath. Linear theory indicates that the ion cyclotron instability should dominate over the mirror mode instability in electron-proton plasma. In this paper, we take a new approach. We examine the role of plasma electron temperature anisotropy on the ion cyclotron and mirror mode instabilities. It will be shown that an inclusion of anisotropic electrons with T⊥ e/T∥ e ≥ 1.2 reduces the ion cyclotron growth rate substantially and increases the mirror mode growth rate. The minimum plasma beta for mirror instability dominance (over the ion cyclotron instability) is βp = 0.5. |
URI: | http://localhost:8080/xmlui/handle/123456789/659 |
Appears in Collections: | UAS_Reprints |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
RemyaB_ReddyRV_JGR_2013.pdf | 732.29 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.