Post-CME spectroscopic observations during the 2020 total solar eclipse

High-resolution spectral diagnostic data gathered from the total solar eclipse in Neuquen, Argentina provided a rare glimpse of Fe X, XI, XIV ions approximately ~110 minues after the initial plasma eruption that led to a near side coronal mass ejection (CME). The iron ion spectral data represents equilibrium temperatures from 0.9 to 1.9 MK and lower Mg I prominences were also observed. We present a well constrained temperature map of both sides of the corona, where the CME occurred and opposite side which is relatively unperturbed.

A geometric simulation based upon Doppler mapping from our spectrometer, perpendicular motion from other cameras, and LASCO velocity estimates is utilized to find critical CME propagation parameters that extend from the low corona until secondary detection at several solar radii. This data fills the gap of spectral measurements from other space telescopes.