Radial evolution of the solar wind electron heat flux in the inner heliosphere

The electron heat flux plays a important role in the expansion of the solar corona and solar wind. The electron heat flux of the solar wind is fully described by the electron velocity distribution function as it evolves with heliocentric distance. We investigate the characteristics of the radial evolution of the electron heat flux in the inner heliosphere from 0.2 to 2.2 au. The electron Fokker-Planck form of the kinetic transport equation is solved numerically in the presence of the magnetic fi