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First science result from Aditya L1, ISRO’s sun mission

Context:

The first science result from the Aditya-L1 mission is out.

 

More on News:

Aditya-L1 mission has achieved its first scientific milestone by using its primary payload, the Visible Emission Line Coronagraph (VELC), to precisely estimate the onset time of a coronal mass ejection from the Sun on July 16.

Key Observations of the mission:

  • Close-range CME Observation: VELC’s unique spectroscopic data allows scientists to study CMEs near the Sun’s surface, which is usually challenging with visible-light observations alone.
  • Thermodynamic Insights: VELC helps scientists understand the thermodynamic properties of CMEs close to their source regions on the Sun, offering valuable insights into solar eruptions.
  • Solar Cycle Monitoring: The Sun is currently approaching the peak of its solar cycle (Cycle No. 25), suggesting an increase in CME activity.
    • VELC’s continuous monitoring can yield extensive scientific data about these eruptions.

Coronal Mass Ejection (CME) 

  • Definition: A Coronal Mass Ejection (CME) is a massive release of plasma and magnetic field from the Sun’s corona into space.
  • Cause: CMEs are caused by the sudden reconfiguration of the Sun’s magnetic fields, which leads to an explosive release of energy.
    • Frequency: CMEs are more frequent during the peak of the Sun’s 11-year solar cycle.
  • Characteristics: They consist of billions of tons of charged particles (plasma) that travel at speeds of hundreds to thousands of kilometers per second.
  • Impact on Earth:
  • Satellite Disruption: CMEs can damage satellite electronics and impact GPS and communication systems.
  • Geomagnetic Storms: When CMEs interact with Earth’s magnetic field, they can cause geomagnetic storms, potentially disrupting power grids and radio communications.
  • Auroras: CMEs can intensify auroras, creating spectacular light displays near the poles.

 

About Aditya L1 Mission

  • Launch Date: The Indian Space Research Organisation (ISRO) launched the Aditya-L1 mission on September 2, 2023, from the Satish Dhawan Space Centre in Sriharikota.
  • Mission Goal: Aditya-L1 is India’s first dedicated scientific mission to study the Sun.
  • Payload: The mission’s primary payload, the Visible Emission Line Coronagraph (VELC), was developed by the Indian Institute of Astrophysics (IIAp), Bengaluru.
  • Current Orbit: Aditya-L1 was placed in a halo orbit around the Earth-Sun Lagrange point (L1) on January 6, 2024.
  • Mission Lifespan: Aditya-L1 is designed to operate for five years, continuously observing and gathering data on solar phenomena.

News Source: The Hindu

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 Final Result – CIVIL SERVICES EXAMINATION, 2023.   Udaan-Prelims Wallah ( Static ) booklets 2024 released both in english and hindi : Download from Here!     Download UPSC Mains 2023 Question Papers PDF  Free Initiative links -1) Download Prahaar 3.0 for Mains Current Affairs PDF both in English and Hindi 2) Daily Main Answer Writing  , 3) Daily Current Affairs , Editorial Analysis and quiz ,  4) PDF Downloads  UPSC Prelims 2023 Trend Analysis cut-off and answer key

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