The Indian Institute of Astrophysics (IIA), based in Bangalore, is the lead laboratory for the development of Visible Line Coronagraph (VELC) payloads, while the Interuniversity Center for Astronomy and Astrophysics, Pune, is the Solar Ultraviolet Imaging Telescope. (SUIT) payload developed. for a mission.
According to ISRO, the VELC is intended to collect data to understand how temperatures in the corona reach about 1 million degrees, while the surface of the sun itself remains just over 6,000 degrees Celsius. .
Aditya-L1 can observe the corona and solar chromosphere using UV payloads and flares using X-ray payloads. Particle detector and magnetometer payloads can provide information about charged particles and magnetic fields reaching halo orbits around L1.
The satellite, developed by the local UR Lao Satellite Center, arrived at ISRO’s Sriharikota Space Port in Andhra Pradesh earlier this month.
It is planned to be placed in a halo orbit around the L1 point in the Sun-Earth system.
A satellite placed in a halo orbit around the L1 point would have the great advantage of being able to observe the sun continuously without planets blocking the view or causing an eclipse, ISRO said. “This would have the great advantage of real-time observation of solar activity and its effect on space weather,” the researchers said.
With special vantage point L1, four payloads are expected to observe the Sun directly, and the remaining three payloads are expected to perform in situ particle and magnetic field studies at the L1 point, which will allow the Sun Significant scientific research on the propagation effects of dynamics will be provided. interplanetary medium.
“The Aditya L1 payload’s SUIT provides the most important information for understanding issues of coronal heating, coronal mass ejection (CME), pre-flare and flare activity and their characteristics, space weather dynamics, and particle and field propagation. It is expected to do so,” said ISRO.
The main scientific objectives of the Aditya-L1 mission are: Study of the dynamics of the upper solar atmosphere (chromosphere and corona). Study of chromospheric and coronal heating, partially ionized plasma physics, coronal mass ejection initiation, and flares. Observe in situ particle and plasma environments that provide data for the study of particle dynamics from the Sun. Physics of the solar corona and its heating mechanism.
In addition, the mission aims to study diagnostics such as temperature, velocity, and density of plasma in the corona and coronal loops. Development, dynamics and origins of CME. Identify a series of processes occurring in multiple layers (chromosphere, basal corona, extended corona) that ultimately lead to solar eruption phenomena. Magnetic field topology and field measurements in the solar corona. Space weather driving forces (origin, composition and dynamics of the solar wind).
The Aditya-L1 instruments are tuned to observe the solar atmosphere, primarily the chromosphere and corona. Field instruments observe the local environment of his L1 point.