| Name: Vishwa Vijay Singh |
| Affiliation: Udaipur Solar Observatory, Physical Research Laboratory(PRL) |
| Conference ID: ASI2026_37 |
| Title: On Flare-CME Coupling and Resulting Particle Acceleration: Insights from Aditya-L1, the Udaipur Radio Spectrographs, and the SDO |
| Abstract Type: Poster |
| Abstract Category: Sun, Solar System, Exoplanets, and Astrobiology |
| Author(s) and Co-Author(s) with Affiliation: Vishwa Vijay Singh(Udaipur Solar Observatory, Physical Research Laboratory, Udaipur - 313001, India), Bhuwan Joshi(Udaipur Solar Observatory, Physical Research Laboratory, Udaipur - 313001, India) |
| Abstract: The Three-part CME model successfully provides us with a fundamental framework to understand the early CME morphology and dynamics. However, the relation between non-thermal emission with early flux-rope evolution and dynamics remains poorly understood. To probe this aspect, we present a detailed multi-instrument analysis of an X3.3-class solar flare that occurred on 24 October 2024 in Active Region 13872, located at S16E76. This eruptive flare was associated with a superfast halo coronal mass ejection (CME) exhibiting a speed of approximately 2385 km/s. The analysis is carried out using EUV imaging from AIA/SDO, hard X-ray measurements from HEL1OS/Aditya-L1, and low-frequency dynamic spectra from the Udaipur solar radio spectrographs. The flare onset was marked by type III radio bursts between 03:39 UT and 03:41 UT, indicating the escape of electron beams into the heliosphere. This was followed by a type II radio burst from 03:41 UT to 03:58 UT, associated with the CME-driven shock. Concurrently, HEL1OS recorded a significant hard X-ray peak in the 80–150 keV energy band at approximately 03:50 UT, coinciding with the impulsive phase of energy release and particle acceleration. The close temporal correlation between these signatures supports a scenario in which magnetic reconnection in the corona initiates both the flare and CME, leading to rapid energy release and outward propagation of a shock. This work underscores the importance of multi-wavelength observations in understanding the coupling between solar flares and CMEs, particularly for understanding the association between non-thermal flare-associated parameters with early CME dynamics.
|
