Analysis of the dynamic behavior of the April 2, 2019 Coronal Mass Ejection

L. DI LORENZO; L. BALMACEDA; H. CREMADES; C. R. BRAGA

Conferencia; SHINE Conference 2021; 2021

In this work, we perform the kinematic characterization of the coronal mass ejection (CME) on April 2, 2019, in a range of heliocentric distances of approximately 5 to 46 solar radii. We use observations from: LASCO-C3 onboard the Solar and Heliospheric Observatory (SOHO) spacecraft, SECCHI-COR2 and HI-1 onboard the Solar Terrestrial Relations Observatory Ahead (STEREO-A) spacecraft and WISPR-I onboard the Parker Solar Probe (PSP) spacecraft. The CME was detected by PSP at a distance of 0.2 AU. From simultaneous observations by LASCO-C3 and COR2-A, we deduce the 3D position, velocity and acceleration of the CME. We combine these with measurements from the heliospheric imagers WISPR-I and HI-1 to determine the dynamic evolution of the CME. We analyze the contribution of the intervening internal forces during the CME propagation, in particular the Lorentz force, the thermal force, and the centrifugal force.