Aditya L-1 Mission

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Aditya L-1 is India’s first space-based mission to study the Sun.Launched today from the Satish Dhawan Space Centre in Sriharikota at 11:50 am.
The total journey time for ISRO’s Aditya-L1 solar mission from Earth to L1 is estimated to be about four months.

PSLV C57 Aditya L1 Mission

Carrying the seven payloads Satellite will cover around 1.5 Million Km to reach the destination L1.
After the earth orbital round it will exit the earth SOI and will enter in Cruise phase.
The spacecraft, , will send data to Earth, with the Visible Emission Line Coronagraph (VELC) being the most significant payload
Aditya L1 Mission
Credit:ISRO
Aditya L1
Credit:ISRO
After Sucessfully clearing the Cruise phase it will enter in halo orbit.
Trajectory Of Aditya L1 on halo orbit as shown in image.

A satellite placed in the halo orbit around the L1 point has the major advantage of continuously viewing the Sun without any occultation/eclipses.
 
Credit:ISRO

The major science objectives of Aditya-L1 mission

  • Study of Solar upper atmospheric (chromosphere and corona) dynamics.
  • Study of chromospheric and coronal heating, physics of the partially ionized plasma, initiation of the coronal mass ejections, and flares
  • Observe the in-situ particle and plasma environment providing data for the study of particle dynamics from the Sun.
  • Physics of solar corona and its heating mechanism.
  • Diagnostics of the coronal and coronal loops plasma: Temperature, velocity and density.
  • Development, dynamics and origin of CMEs.
  • Identify the sequence of processes that occur at multiple layers (chromosphere, base and extended corona) which eventually leads to solar eruptive events.
  • Magnetic field topology and magnetic field measurements in the solar corona .
  • Drivers for space weather (origin, composition and dynamics of solar wind .

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