Image Details
Caption: Figure 9.
First PSP encounter as a function of time. Top to bottom: PSP distance from the solar center Sun in solar radii; combined SPAN-E PADs for the passband at 302 eV and normalized by the average flux; the R component of the ambient magnetic field in a heliocentric reference frame in nT; summed energy spectra (SF1) from SPAN-Ae in differential energy flux units; summed energy spectra from SPAN-B in differential energy flux units. During most of the first encounter, the magnetic field is pointed sunward, and hence, the PADs for the 302 eV channel that corresponds to the sense of the electron strahl are found at 180°.
© 2020. The Author(s). Published by the American Astronomical Society.