Speaker
Ephrem Tesfaye Desta
(Centre for Space Research, North-West University)
Description
Anisotropy is a property of turbulence in solar wind plasma in which velocity and magnetic fields
fluctuate along and perpendicular to the ambient magnetic field. Recent in situ measurements
confirmed that the solar wind in the inner heliosphere exhibits a temperature anisotropy. The
presence of this anisotropy results in magnetohydrodynamic (MHD) waves and instabilities. In
this report, we analyze the proton temperature anisotropy using data from the Ulysses spacecraft
during its first latitude scan. Radial and latitudinal variations of temperature anisotropy for Firehose
and Mirror instabilities are discussed.
