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We propose a transport theory for the kinetic evolution of solar-wind electrons in the heliosphere. We derive a gyro-averaged kinetic transport equation that accounts for the spherical expansion of the solar wind and the geometry of the Parker spiral magnetic field. To solve our three-dimensional kinetic equation, we develop a mathematical approach that combines the Crank-Nicolson scheme in velocity space and a finite-difference Euler scheme in configuration space. We initialize our model with isotropic electron distribution ...
Jeong, Seong-Yeop; Verscharen, Daniel; Vocks, Christian; Abraham, Joel; Owen, Christopher; Wicks, Robert; Fazakerley, Andrew; Stansby, David; Ber\vci\vc, Laura; Nicolaou, Georgios; Rueda, Jeffersson; Bakrania, Mayur;
Published by: \apj Published on: mar
YEAR: 2022   DOI: 10.3847/1538-4357/ac4805
This paper reports the first possible evidence for the development of the Kelvin-Helmholtz (KH) instability at the border of coronal holes separating the associated fast wind from the slower wind originating from adjacent streamer regions. Based on a statistical data set of spectroscopic measurements of the UV corona acquired with the UltraViolet Coronagraph Spectrometer on board the SOlar and Heliospheric Observatory during the minimum activity of solar cycle 22, high temperature-velocity correlations are found along the fa ...
Published by: \apj Published on: apr
YEAR: 2022   DOI: 10.3847/1538-4357/ac5cc3
Parker Data Used; Magnetohydrodynamics; Theoretical models; Time series analysis; Solar corona; Solar coronal heating; Solar coronal holes; Solar coronal streamers; Solar oscillations; Solar ultraviolet emission; 1964; 2107; 1916; 1483; 1989; 1484; 1486; 1515; 1533