Abstract Details
| Name: SATABDWA MAJUMDAR Affiliation: IIA, Bengaluru Conference ID: ASI2019_475 Title : CONNECTING CMEs TO THEIR SOURCE REGIONS, AND UNDERSTANDING THEIR 3-D EVOLUTION: A PREPARATORY STUDY FOR THE ADITYA L1 MISSION Authors and Co-Authors : Satabdwa Majumdar, Vaibhav Pant, Ritesh Patel, Dipankar Banerjee Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : Coronal Mass Ejections (CMEs) are the main drivers of space weather and therefore it is important to understand their kinematics in the solar corona. We are yet to have a good understanding of the kinematics of CMEs in the lower corona (1 R_sun to 3 R_sun). The properties of CMEs such as width, tilt angle, aspect ratio also varies rapidly in the lower corona. In this work, we back propagate the CMEs on to the solar disk and associate them to their source regions. We segregate the CMEs based on their speeds (as fast and slow CMEs) and on their associated source regions (Active Regions, Quiescent Prominences and Active Prominences) and try to understand the distribution of fast and slow CMEs with different source regions and how do the source regions affect their kinematical properties. With the help of the Graduated Cylindrical Shell (GCS) model, we try to understand the 3-D evolution of CMEs, the variation of width, tilt angle by stereoscopic observations with the data from STEREO A and STEREO B. We also try to understand how the solar wind interacts with fast and slow CMEs and how CMEs get deflected as it propagates through the corona to the outer space. We finally aim to come up with a complete 3-D kinematical profile of CMEs from the Sun to the Earth, which will help in arrival time prediction of CMEs on Earth. This study will provide valuable inputs for the observation plan of the ADITYA mission which has the VELC on board. |