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विज्ञान आणि तंत्रज्ञानGS3
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Solar Flare Precursors and Space Weather Forecasting Advancements

Source:The Hindu ↗

हे का महत्त्वाचे आहे

Solar flares and space weather events pose direct, severe threats to modern high-tech infrastructure, including communication satellites, navigation (GPS) networks, power grids, and aviation radio frequencies. Improved early-warning mechanisms are crucial for disaster preparedness and safeguarding national technological assets.

सारांश

A recent study highlights the identification of early warning signs and precursor signatures on the Sun prior to the eruption of solar flares. This advancement holds significant promise for space weather forecasting, enabling better preparation and protection for critical Earth-orbiting satellites, navigation systems, and power grid networks against extreme solar storms.

मुख्य मुद्दे

  • A new scientific study has captured early warning signs and pre-flare activity in the Sun's atmosphere before powerful solar flares occur.
  • Detecting these precursors helps improve space weather forecasting, mitigating risks to satellite communications, power grids, and GPS systems on Earth.
  • Understanding solar dynamics is critical for space missions and protecting vital technological infrastructure from geomagnetic disruptions.

महत्त्वाच्या संज्ञा

NASA

An independent agency of the U.S. government responsible for civilian space program and aeronautics research, frequently providing foundational observational data for global solar physics and space weather studies.

UPSC context

UPSC GS Paper III (Science and Technology - Space Technology); important international space agency frequently linked with space exploration, solar missions, and astronomy.

Source

पूर्वपरीक्षा सापळा

Solar flares are physical ejections of high-speed solar plasma and charged protons traveling directly through interplanetary space towards Earth.

Aspirants often confuse solar flares (electromagnetic radiation bursts) with coronal mass ejections (CMEs, plasma ejections), though both are driven by solar magnetic activity.

संबंधित स्थिर संकल्पना

Science and Technology - Space Technology

What are the primary layers of the Sun's atmosphere and the origins of solar flares?

  • Photosphere & Corona: Photosphere is the visible surface radiating light, underlying the chromosphere and the corona where extreme heating occurs.
  • Magnetic Reconnection: Solar flares originate from sudden magnetic reconnection events releasing massive energy stored in twisted solar magnetic fields.

आंतर-विषय नमुने

  • Solar Flares + National Power Grid Resilience

    Geomagnetic induced currents from solar flares directly test the resilience of national power transmission grids and critical energy infrastructure.

  • Space Weather + Disaster Communication Disruption

    Changes in solar irradiance and ionospheric electron density directly affect radio propagation, impacting military communications and disaster management networks.

Expect a statement-based prelims question linking solar flare precursors, ionospheric modification, and GIC impacts on LEO satellites.

संबंधित PYQ · 2

संबंधित PYQ · 2

  • 2022PrelimsGS1

    If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth? 1. GPS and navigation systems could fail. 2. Tsunamis could occur at equatorial regions. 3. Power grids could be damaged. 4. Intense auroras could occur over much of the Earth. 5. Forest fires could take place over much of the planet. 6. Orbits of the satellites could be disturbed. 7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted. Select the correct answer using the code given below:

  • 2025PrelimsGS1

    Consider the following statements : Statement I: Scientific studies suggest that a shift is taking place in the Earth's rotation and axis. Statement II: Solar flares and associated coronal mass ejections bombarded the Earth's outermost atmosphere with tremendous amount of energy. Statement III : As the Earth's polar ice melts, the water tends to move towards the equator. Which one of the following is correct in respect of the above statements?