dc.contributor.author | Engelbrecht, N. Eugene | |
dc.contributor.author | Strauss, R. Du Toit | |
dc.date.accessioned | 2018-05-08T12:51:14Z | |
dc.date.available | 2018-05-08T12:51:14Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Engelbrecht, N.E. & Strauss, R.D.T. 2018. A tractable estimate for the dissipation range onset wavenumber throughout the heliosphere. Astrophysical journal, 856(2): Article no 159. [https://doi.org/10.3847/1538-4357/aab495] | en_US |
dc.identifier.issn | 0004-637X | |
dc.identifier.issn | 1538-4357 (Online) | |
dc.identifier.uri | http://hdl.handle.net/10394/26832 | |
dc.identifier.uri | https://doi.org/10.3847/1538-4357/aab495 | |
dc.identifier.uri | http://iopscience.iop.org/article/10.3847/1538-4357/aab495/pdf | |
dc.description.abstract | The modulation of low-energy electrons in the heliosphere is extremely sensitive to the behavior of the dissipation
range slab turbulence. The present study derives approximate expressions for the wavenumber at which the
dissipation range on the slab turbulence power spectrum commences, by assuming that this onset occurs when
dispersive waves propagating parallel to the background magnetic field gyroresonate with thermal plasma particles.
This assumption yields results in reasonable agreement with existing spacecraft observations. These expressions
are functions of the solar wind proton and electron temperatures, which are here modeled throughout the region
where the solar wind is supersonic using a two-component turbulence transport model. The results so acquired are
compared with extrapolations of existing models for the dissipation range onset wavenumber, and conclusions are
drawn therefrom | en_US |
dc.language.iso | en | en_US |
dc.publisher | IOP Publishing | en_US |
dc.subject | Solar wind | en_US |
dc.subject | Sun: heliosphere | en_US |
dc.subject | Turbulence | en_US |
dc.subject | Waves | en_US |
dc.title | A tractable estimate for the dissipation range onset wavenumber throughout the heliosphere | en_US |
dc.type | Article | en_US |
dc.contributor.researchID | 12580996 - Engelbrecht, Nicholas Eugene | |
dc.contributor.researchID | 13065440 - Strauss, Roelf Du Toit | |