Abstract Details

Name: Vijayalakshmi P
Affiliation: Madurai kamaraj university
Conference ID: ASI2020_211
Title : Comparison of coronal and interplanetary activities of geo-effective Halo CMEs
Authors and Co-Authors : Vijayalakshmi, P. and Shanmugaraju, A
Abstract Type : Poster
Abstract Category : Sun and the Solar System
Abstract : The Coronal Mass Ejections (CMEs) from the Sun, consist of high magnetic field and energetic particles, can disrupt the Earth’s magnetic field. It is reported by many authors that the disc-centered and Halo (360˚) CMEs are found to be more geo effective. In this work, three such disc-centered Halo CMEs from the 24th Solar Cycle are taken in to account to understand the dynamics and their associated activities from near Sun to Earth. These CMEs are considered because of their different speeds (fast for event #1, medium for event #2 and slow for event #3) near the Sun. However, the speed of these events in the near Earth space called as Interplanetary Coronal Mass Ejections (ICME’s) are found to be similar ∼ 500-600 km s-1 and the transit time of these events is found to be similar ∼ 50-60 hrs. These events also produced radio bursts and moderate to strong geomagnetic storms. The dynamics of these events and their associated activities from the near Sun to Earth will also be presented.