IIA team makes key solar observation using radio telescope and Aditya-L1 satellite payload

Why in news

The Indian Institute of Astrophysics (IIA) team successfully observed shocks driven by coronal mass ejections (CMEs) using the Gauribidanur radio telescope and Aditya-L1's VELC payload.

Background

The team led by Prof. R. Ramesh estimated the onset distance of a CME shock (from May 27, 2024) to be approximately 130,000 km from the Sun. The study utilized the Visible Emission Line Coronagraph (VELC) payload on the Aditya-L1 satellite.

Facts for Prelims

• S&TVELC: Visible Emission Line Coronagraph is a payload on the Aditya-L1 satellite.
• BodyIIA: Indian Institute of Astrophysics operates the Gauribidanur radio telescope.
• FactThe estimated onset distance of the observed CME shock was approximately 130,000 km from the Sun.

For Mains

Q. Discuss the significance of solar observation missions like Aditya-L1 in understanding space weather and its impact on terrestrial infrastructure.

Dimensions to cover in your answer

• Space weather mitigation: Predicting CME-induced geomagnetic storms to protect satellite communications and power grids
• Technological sovereignty: Advancing indigenous high-resolution solar coronagraphy to reduce reliance on international space agencies

Keywords: Coronal Mass Ejections · Space Weather · Solar Corona · Aditya-L1 · Radio Astronomy

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