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Collisionless model of the solar wind in a spiral magnetic field

dc.contributor.authorPierrard, V.
dc.contributor.authorIssautier, K.
dc.contributor.authorMeyer-Vernet, N.
dc.contributor.authorLemaire, J.
dc.date2001
dc.date.accessioned2017-05-04T09:31:05Z
dc.date.available2017-05-04T09:31:05Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/5254
dc.descriptionWe present a kinetic collisionless model of the solar wind generalized to take into account the spiral structure of the interplanetary magnetic field. This model, which also includes Kappa velocity distributions, calculates self-consistently the electric potential profile and derives the solar wind speed and the temperatures of the medium. We study how the inclusion of the spiral geometry changes the plasma parameters compared to the case of a radial magnetic field. Whereas the interplanetary electric potential, the wind density and bulk speed are not significantly changed, we show that the electron and proton temperatures are modified; in particular, we find a decrease of the proton temperature and of its anisotropy, and an increase of the electron temperature. We discuss these results and the validity of the model.
dc.languageeng
dc.titleCollisionless model of the solar wind in a spiral magnetic field
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeCalculations
dc.subject.freeElectric potential
dc.subject.freeElectrons
dc.subject.freeKinetic theory
dc.subject.freeMagnetic anisotropy
dc.subject.freeMagnetic fields
dc.subject.freeMathematical models
dc.subject.freeProtons
dc.subject.freeTemperature
dc.subject.freeVelocity
dc.subject.freeWind
dc.subject.freeElectric potential
dc.subject.freeMagnetic fields
dc.subject.freeMagnetism
dc.subject.freeSolar wind
dc.subject.freeWind
dc.subject.freeCollisionless model
dc.subject.freeKappa velocity distribution
dc.subject.freeSolar wind
dc.subject.freeGeomagnetism
dc.subject.freeMagnetoplasma
dc.subject.freeCollisionless
dc.subject.freeInterplanetary magnetic fields
dc.subject.freePlasma parameter
dc.subject.freeProton temperatures
dc.subject.freeRadial magnetic field
dc.subject.freeSolar wind speed
dc.subject.freeSpiral geometries
dc.subject.freeSpiral structures
dc.subject.freemagnetic field
dc.subject.freesolar wind
dc.source.titleGeophysical Research Letters
dc.source.volume28
dc.source.issue2
dc.source.page223-226
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/2000GL011888
dc.identifier.scopus2-s2.0-0035862083


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