ADITYA-L1 MISSION

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Aditya-L1 India's Solar Mission

• GS3 Science and Technology

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Introduction

• Conceived in January 2008 by the Advisory
  Committee for Space Research
• Will be placed at Lagrange point 1 (L1)
  Positioned 1.5 million kilometers from Earth
• Launched using Polar Satellite Launch Vehicle
  (PSLV) XL
• Will take Approx. 109 Earth days to reach L1
  orbit

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Payloads on Aditya-L1

• Visible Line Emission Coronagraph (VLEC) For
  Imaging and spectroscopy of the corona.
• Solar Ultraviolet Imaging Telescope (SUIT)
  Captures images of the photosphere and
  chromosphere in both narrow and broadband
  ultraviolet.
• Solar Low Energy X-ray Spectrometer (SoLEXS)
  Performs soft X-ray spectroscopy, observing the
  Sun as a star.
• Aditya Solar wind Particle Experiment (ASPEX)
  Analyzes solar wind and particles, including
  protons and heavier ions, with directional
  capabilities.

• High Energy L1 Orbiting X-ray Spectrometer
  (HEL1OS) Conducts hard X-ray spectroscopy to
  observe the Sun as a star.
• Plasma Analyser Package for Aditya (PAPA)
  Studies solar wind and particles, including
  electrons and heavier ions, with directional
  measurements.
• Advanced Tri-axial High-Resolution Digital
  Magnetometers Measures the in-situ magnetic
  field in three dimensions (Bx, By, and Bz).

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Objectives of Aditya-L1

• Investigate the dynamics of the upper solar
  atmosphere, with a focus on the chromosphere and
  corona.
• Research the processes associated with
  chromospheric and coronal heating, as well as the
  physics of partially ionized plasma. This
  includes the study of phenomena like coronal mass
  ejections (CMEs) and solar flares.
• Gather in-situ data on particles and plasma in
  the solar environment to enhance our
  understanding of particle dynamics originating
  from the Sun.
• Map the magnetic field topology and collect
  magnetic field measurements within the solar
  corona.
• Examine the drivers for space weather,
  encompassing the origin, composition, and
  dynamics of the solar wind.

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Lagrange Points

• Lagrange Points, also known as L-points, are
  locations in space where gravitational forces
  create equilibrium.
• The concept was developed by Italian - French
  mathematician Joseph-Louis Lagrange in the late
  18th century.
• There are 5 such points from L1 to L5

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Other Solar Missions

• DSCOVR (2015) - NOAA (USA)
• Objective Monitor solar wind, coronal mass
  ejections, and Earth's climate.
• Parker Solar Probe (2018-2025) - NASA
• Objective Close-range study of the solar corona,
  gather data on the Sun's outer atmosphere, and
  study the solar wind.
• Solar Orbiter (2020) - ESA
• Objective Study solar and heliospheric physics,
  providing insights into the Sun's behavior and
  its effects on the solar system.
• CuSP (2022) - NASA
• Objective Study particles and magnetic fields in
  the solar environment, deepening our
  understanding of the Sun's magnetic dynamics and
  solar wind interactions.