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ISRO’s Aditya-L1 mission captures first-ever image of a solar flare ‘kernel’

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(Source – The Hindu, International Edition – Page No. – 3)

Topic: GS3 – Science and Technology

Context

  • Aditya-L1’s SUIT payload captured the first-ever solar flare ‘kernel’ image, providing new insights into solar activity and energy dynamics.

First-Ever Image of Solar Flare Kernel:

  • India’s first space-based solar mission, Aditya-L1, has made a significant breakthrough by capturing the first-ever image of a solar flare ‘kernel.’

  • The Solar Ultraviolet Imaging Telescope (SUIT) payload recorded this image in the Sun’s lower atmosphere, specifically in the photosphere and chromosphere.

  • On February 22, SUIT observed an X6.3-class solar flare, one of the most intense solar eruptions, in the Near Ultraviolet wavelength (200-400 nm), marking a first in solar observations.

What is a Solar Flare ‘Kernel’?

  • A solar flare ‘kernel’ refers to the brightest and most concentrated region of a solar flare, observed in the lower layers of the Sun’s atmosphere, such as the photosphere and chromosphere.

  • It is the initial point of intense energy release during a solar flare, associated with rapid plasma heating and particle acceleration.

  • Studying kernels helps scientists understand the mechanisms behind solar eruptions and space weather effects.

Isro’s Aditya-L1 Mission Captures First-Ever Image Of A Solar Flare ‘Kernel’

Scientific Significance of the Discovery

  • This discovery confirms that flare energy spreads across different solar layers and influences plasma temperature in the corona.

  • The study also revealed that localized brightening in the lower atmosphere corresponds to an increase in plasma temperature in the corona.

  • This confirms the link between flare energy deposition and temperature evolution, providing crucial insights into the physics of solar flares.

Aditya-L1 Mission: Key Information

  • India’s First Solar Mission: Launched by ISRO on September 2, 2023, Aditya-L1 is India’s first dedicated space-based mission to study the Sun.

  • Orbit and Location: On January 6, 2024, it was successfully placed in a halo orbit around the Lagrange Point L1, about 1.5 million km from Earth.

  • Objective: To study solar activity, including solar flares, coronal mass ejections (CMEs), and their impact on space weather.

  • Scientific Payloads: Carries seven payloads, including the Solar Ultraviolet Imaging Telescope (SUIT) for observing the Sun in near-ultraviolet wavelengths.

  • Importance: Enhances India’s solar physics research and contributes to global space weather forecasting.

Practice Question: How does the Aditya-L1 mission contribute to the understanding of solar activity and its impact on space weather? Explain its significance for India’s space research. (250 Words /15 marks)

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