Aditya-L1 mission: IIA scientists report observations of a flareless coronal mass ejection from the solar atmosphere
The Hindu
Indian scientists report flareless coronal mass ejection observations from the Sun using VELC instrument on Aditya-L1 mission.
Scientists from the Indian Institute of Astrophysics (IIA) have reported observations of a flareless coronal mass ejection (CME) from the solar atmosphere with the Visible Emission Line Coronagraph (VELC) instrument onboard Aditya-L1 mission.
The Aditya-L1 mission is India’s first scientific mission dedicated to studying the Sun and the VELC payload was developed by the Bengaluru-based IIA.
Scientists associated with the IIA said that using the VELC payload, it was possible to observe the corona not only closer to where its base is located in the solar atmosphere, but also obtain data at shorter time intervals compared to other existing coronagraphs in orbit.
The VELC team observed the onset of a CME that erupted from the Sun on July 5, 2024, with no association to any flare.
They said that the data obtained provides valuable clues to understand and differentiate the magnetic instabilities on the Sun that causes the flares and the CMEs.
The results of the study will be appearing soon in the Astrophysical Journal, an international peer-reviewed scientific journal.
“Observation of CMEs as and when they originate on the Sun and understanding their association with flares is one of the major science goals for VELC, and we are happy that the instrument is doing that,” said R. Ramesh, senior professor at the IIA and the principal investigator for the VELC.
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