ISRO to launch Aditya L1 satellite for the Solar Mission to study the Sun on the 1st week of September.

Aditya L1 India’s First Solar Mission by ISRO: All That You Need To Know

ISRO will launch Aditya L1 satellite with the help of the PSLV XL powerful rocket. 

PSLV XL ROCKET

Aditya L1 mission will observe the solar activities continuously. The spacecraft payloads (instruments) will study the photosphere, chromosphere, and the outermost layers of the Sun (the corona).

  Purpose Of Aditya L1

1. Understand the coupling and dynamics of the solar atmosphere. 2. Study the solar corona, the Sun's outermost layer. This will help to understand coronal heating. 3. Study the solar wind, the stream of charged particles that flows from the Sun. This will help to understand solar wind distribution and temperature anisotropy. 4. Study coronal mass ejections (CMEs), solar flares, and the physics of the solar atmosphere.

  Objectives of Aditya L1

1. Onboard intelligence to detect CMEs and solar flares for optimized observations and data volume. 2. First time spatially resolved 3. solar disk in the near UV band. 3. CME dynamics close to the solar disk (~from 1.05 solar radius) and thereby providing information on the acceleration regime of CME which is not observed consistently. 4. Directional and energy anisotropy of solar wind using multi-direction observations.

 Uniqueness of Aditya L1

Aditya L1 will be placed in a large halo orbit around the Sun-Earth Lagrange Point L1. This is a point in space that is located about 1.5 million kilometres from Earth. The L1 point is a stable location where the gravitational forces of the Sun and Earth balance each other out.

Where will Aditya L1 be placed?

Remote Sensing Payloads 1. Visible Emission Line Coronagraph (VELC) 2. Solar Ultra-violet Imaging Telescope (SUIT) 3. Solar Low Energy X-ray Spectrometer (SoLEXS) 4. High Energy L1 Orbiting X-ray Spectrometer (HEL1OS) In-situ Payloads 1. Aditya Solar wind Particle EXperiment (ASPEX) 2. Plasma Analyser Package for Aditya (PAPA) 3. Advanced Tri-axial High-Resolution Digital Magnetometers

Payloads Carried by Aditya L1.

VELC will Study the solar corona and dynamics of Coronal Mass Ejections.

SUIT will help Imaging the Solar Photosphere and Chromosphere in near Ultra-violet (UV). It also measures the solar irradiance variations in near UV.

Use of (VELC) & (SUIT) Payload

SoLEXS is a Soft X-ray spectrometer; studies the X-ray flares from the Sun over a wide X-ray energy range.

HEL1OS is a Hard X-ray spectrometer; studies the X-ray flares from the Sun over a wide X-ray energy range.

Use of (SoLEXS) & (HEL1OS) Payload

SWIS (Solar Wind Ion Spectrometer) is a low-energy spectrometer that is designed to measure the proton and alpha particles of the solar wind.

STEPS (Suprathermal and Energetic Particle Spectrometer)is a high-energy spectrometer that is designed to measure high-energy ions of the solar wind.

Use of  (ASPEX) Payload

PAPA is designed to understand solar winds and its composition and, do mass analysis of solar wind ions.

Use of (PAPA) Payload

PAPA is designed to understand solar winds and its composition and, do mass analysis of solar wind ions.

Use of (PAPA) Payload

Magnetometer (MAG) onboard Aditya-L1 is meant to measure the low intensity interplanetary magnetic field in space. It has two sets of Magnetic Sensors:one at the tip of a 6 meter deployable boom, and the other in the middle of the boom, 3 meters away from the spacecraft.

Use of Magnetometer (MAG) Payload