Sun Nov 09 05:51:18 UTC 2025: Here’s a summary of the text followed by a rewritten news article:
Summary:
Scientists from the Indian Institute of Astrophysics (IIA), in collaboration with NASA, have successfully estimated crucial parameters of a coronal mass ejection (CME) very close to the Sun, thanks to the Visible Emission Line Coronagraph (VELC) onboard India’s Aditya-L1 solar mission. These are the first-ever spectroscopic observations of a CME in the visible wavelength range so close to the Sun, allowing researchers to determine its electron density, energy, mass, temperature, and speed. The data provides crucial insight into the amount of material lost from the Sun during such events, particularly important as the Sun approaches its maximum activity phase.
News Article:
Aditya-L1 Delivers First-of-its-Kind CME Observations, Reveals Startling Solar Dynamics
Bengaluru, November 9, 2025 – India’s Aditya-L1 solar mission has achieved a groundbreaking milestone, providing the closest-ever spectroscopic observations of a coronal mass ejection (CME) in the visible wavelength range. Scientists at the Indian Institute of Astrophysics (IIA), in collaboration with NASA, used the mission’s Visible Emission Line Coronagraph (VELC) to analyze a CME in unprecedented detail, revealing crucial information about its composition and dynamics near its origin.
The VELC’s unique vantage point at the Sun-Earth Lagrangian L1 point, offering continuous 24-hour observation, allowed researchers to estimate the electron density, energy, mass, temperature, and speed of the CME. Dr. V. Muthupriyal, VELC Project Scientist, and her team calculated the CME’s electron density at a staggering 370 million electrons per cubic centimeter, significantly higher than the surrounding corona.
Prof. R. Ramesh, Senior Professor at IIA and principal investigator of the VELC project, explained the significance of the findings. “These observations are by far the closest to the Sun where spectroscopic observations of a CME have been obtained with a space coronagraph.” The team determined the CME’s energy to be approximately 9.4 * 10^21 joules, its mass nearly 270 million tons, its initial speed 264 km/sec, and its temperature a scorching 1.8 million degrees Kelvin.
Researchers emphasize that understanding these parameters near the Sun is crucial for determining the amount of material ejected during a CME. As the Sun approaches the peak of its current sunspot cycle 25, the VELC is expected to witness and analyze more frequent and powerful eruptions, providing invaluable data for predicting space weather and its potential impact on Earth.
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