Abstract Details


Name: Nandita Srivastava
Affiliation: Udaipur Solar Observatory, Physical Research Laboratory
Conference ID: TVS202510333
Title: Unveiling CME dynamics in the heliosphere
Authors and Co-Authors:
Abstract Type: Invited by SOC
Abstract: Coronal mass ejections are subject to changes in their direction of propagation and tilt as they propagate in the heliosphere. Although CME deflection is commonly observed, its rotation is rarely observed in the heliosphere. This is because CMEs interact with the ambient solar wind and other large-scale magnetic field structures. Our study of the propagation characteristics of 15 Earth-impacting CMEs reveals that most of the CMEs undergo self-similar propagation as they propagate in the heliosphere. Some are found to deflect in latitude and longitude. However, evidence of the rotation of a CME is a rather rare phenomenon during its propagation. The observed deflection and rotation can be attributed to the interaction with the ambient solar wind and the influence of the ambient magnetic field. Our study highlights the significance of observations from the Heliospheric Imager (HI1) onboard STEREO, which establish the connection between near-sun observations and in situ measurements at the L1 point. The results have significant implications for our understanding of how CMEs propagate through the heliosphere and their impact on space weather.