Tag: Aditya-L1

Aditya-L1

Aditya-L1 Enters Final Orbit; India Creates Another Landmark: Modi

By LokMarg

In a significant scientific milestone, Indian Space Research Organisation (ISRO) on Saturday injected Aditya-L1 spacecraft – the first dedicated solar mission – into its final destination orbit.

Prime Minister Narenendra Modi and Minister of State for Science and Technology Jitendra Singh were among leaders who hailed the achievement.

Aditya-L1 has reached Lagrange Point L1, about 1.5 million km from earth.

The PSLV-C57.1 rocket carrying the Aditya-L1 orbiter lifted off successfully from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh, in September.

The successful launch of the maiden solar mission of the Indian Space Research Organisation (ISRO) came on the heels of the historic lunar landing mission — Chandrayaan-3.

Prime Minister Narendra Modi said India will continue to pursue new frontiers of science for the benefit of humanity.

“India creates yet another landmark. India’s first solar observatory Aditya-L1 reaches it’s destination. It is a testament to the relentless dedication of our scientists in realising among the most complex and intricate space missions. I join the nation in applauding this extraordinary feat. We will continue to pursue new frontiers of science for the benefit of humanity,” he said in post on X.

Jitendra Singh said Aditya L1 will discover the mysteries of sun-earth connection

“From Moon walk to Sun Dance! What a glorious turn of year for Bharat! Under the visionary leadership of PM @narendramodi, yet another success story scripted by Team #ISRO. #AdityaL1 reaches its final orbit to discover the mysteries of Sun-Earth connection,” he said in a post on X.

Commerce and Industry Minister Piyush Goyal also congratulated the scientists and said India’s space journey is unstoppable.

“Wings of Fire! Congratulations to the dedicated scientists at @ISRO for successfully inserting Bharat’s first solar observatory #AdityaL1 into its intended destination. First the moon, now the sun… our space journey is unstoppable!

Aditya L1 has seven different payloads on board, to conduct a detailed study of the sun, four of which will observe the light from the sun and the other three will measure in-situ parameters of the plasma and magnetic fields.

The largest and technically most challenging payload on Aditya-L1 is the Visible Emission Line Coronagraph or VELC. VELC was integrated, tested, and calibrated at the Indian Institute of Astrophysics’ CREST (Centre for Research and Education in Science Technology) campus in Hosakote in collaboration with ISRO.

This strategic location will enable Aditya-L1 to continuously observe the sun without being hindered by eclipses or occultation, allowing scientists to study solar activities and their impact on space weather in real-time.

Also, the spacecraft’s data will help identify the sequence of processes that lead to solar eruptive events and contribute to a deeper understanding of space weather drivers.

Major objectives of India’s solar mission include the study of the physics of solar corona and its heating mechanism, the solar wind acceleration, coupling and dynamics of the solar atmosphere, solar wind distribution and temperature anisotropy, and origin of Coronal Mass Ejections (CME) and flares and near-earth space weather. (ANI)

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Aditya-L1 ISRO

Aditya-L1 Captures First High-Energy X-Ray Glimpse Of Solar Flares

By LokMarg

The X-ray spectrometer, HEL1OS, attached to Aditya-L1 spacecraft by ISRO for its maiden solar mission, captured the first high-energy X-ray glimpse of solar flares.

In its update, ISRO on Tuesday noted that the spectrometer on board Aditya-L1 has recorded the impulsive phase of solar flares, during its first observation period from approximately October 29, 2023.

A solar flare is a sudden brightening of the solar atmosphere. Flares produce enhanced emission in all wavelengths across the electromagnetic spectrum – radio, optical, UV, soft X-rays, hard X-rays and gamma-rays.

Commissioned on October 27, 2023, the HEL1OS X-ray spectrometer is currently undergoing fine-tuning of thresholds and calibration operations. It has been monitoring the Sun for hard X-ray activities ever since.

“The instrument is set to monitor the sun’s high-energy X-ray activity with fast timing and high-resolution spectra,” ISRO wrote on its X timeline. HEL1OS data enables researchers to study explosive energy release and electron acceleration during impulsive phases of solar flares.

HEL1OS was developed by the Space Astronomy Group of the UR Rao Satellite Centre of ISRO in Bengaluru.

In early October, the Aditya-L1 spacecraft which is carrying out India’s first solar mission performed a trajectory correction manoeuvre (TCM), for about 16 seconds.

ISRO had then noted that the manoeuvre was needed to correct the trajectory evaluated after tracking the Trans-Lagrangean Point 1 Insertion (TL1I) manoeuvre performed on September 19.

So far in its journey, the spacecraft has undergone a few earth-bound manoeuvres and a Trans-Lagrangean Point 1 Insertion (TL1I) manoeuvres, all successfully. In the process, the spacecraft successfully escaped the sphere of Earth’s influence.

Aditya-L1 has also commenced collecting scientific data. The sensors of the STEPS (Supra Thermal and Energetic Particle Spectrometer) instrument have begun measuring supra-thermal and energetic ions and electrons at distances greater than 50,000 km from Earth.

This data would help scientists analyze the behaviour of particles surrounding Earth. The figure below displays variations in the energetic particle environment, collected by one of the units.

After the successful soft landing of Chandrayaan-3 near the South pole of the moon, the ISRO launched the country’s maiden solar mission — Aditya-L1 from the Satish Dhawan Space Centre in Sriharikota on September 2.

It carried seven different payloads to have a detailed study of the sun, four of which will observe the light from the sun and the other three will measure in-situ parameters of the plasma and magnetic fields.

Aditya-L1 will be placed in a halo orbit around Lagrangian Point 1 (or L1), which is 1.5 million km away from the Earth in the direction of the sun. It is expected to cover the distance in four months’ time.Aditya-L1 will stay approximately 1.5 million km away from Earth, directed towards the Sun, which is about 1 per cent of the Earth-Sun distance. The Sun is a giant sphere of gas and Aditya-L1 would study the outer atmosphere of the Sun.

ISRO had said Aditya-L1 will neither land on the sun nor approach the sun any closer.

This strategic location will enable Aditya-L1 to continuously observe the sun without being hindered by eclipses or occultation, allowing scientists to study solar activities and their impact on space weather in real-time. Also, the spacecraft’s data will help identify the sequence of processes that lead to solar eruptive events and contribute to a deeper understanding of space weather drivers. (ANI)

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Chandrayaan-3

Aditya-L1: Countdown For India’s First Mission To Sun Begins

By LokMarg

Shifting focus to its next space odyssey after successfully placing a lander on the moon’s uncharted South Pole region, the Indian Space Research Organisation (ISRO) is all set for the country’s maiden solar mission — Aditya-L1.

The launch of the sun mission is scheduled for Saturday at 1150 IST from the launch pad at Sriharikota, with the launch rehearsal and vehicle internal checks all being completed.

Aditya-L1 is India’s first solar space observatory and will be launched by the PSLV-C57. It will carry seven different payloads to have a detailed study of the sun, four of which will observe the light from the sun and the other three will measure in-situ parameters of the plasma and magnetic fields.

The largest and technically most challenging payload on Aditya-L1 is the Visible Emission Line Coronagraph or VELC. VELC was integrated, tested, and calibrated at the Indian Institute of Astrophysics’ CREST (Centre for Research and Education in Science Technology) campus in Hosakote in collaboration with ISRO.

Aditya-L1 will be placed in a halo orbit around Lagrangian Point 1 (or L1), which is 1.5 million km away from the Earth in the direction of the sun. It is expected to cover the distance in four months’ time.

This strategic location will enable Aditya-L1 to continuously observe the sun without being hindered by eclipses or occultation, allowing scientists to study solar activities and their impact on space weather in real-time. Also, the spacecraft’s data will help identify the sequence of processes that lead to solar eruptive events and contribute to a deeper understanding of space weather drivers.

Major objectives of India’s solar mission include the study of the physics of solar corona and its heating mechanism, the solar wind acceleration, coupling and dynamics of the solar atmosphere, solar wind distribution and temperature anisotropy, and origin of Coronal Mass Ejections (CME) and flares and near-earth space weather.

The atmosphere of the sun, the corona, is what we see during a total solar eclipse. A coronagraph like the VELC is an instrument that cuts out the light from the disk of the sun, and can thus image the much fainter corona at all times, the Bengaluru-based Indian Institute of Astrophysics said.

On August 23, India took a giant leap as the Chandrayaan-3 lander module successfully landed on the moon’s South Pole, making it the first country to have achieved the historic feat and bringing to an end the disappointment over the crash landing of the Chandrayaan-2, four years ago. Overall, India became the fourth country – after the US, China, and Russia – to have successfully landed on the moon’s surface.

After having landed, the Vikram lander and the Pragyan rover performed different set tasks on the lunar surface, including finding the presence of sulphur and recording relative temperature.

Upon landing, the lander and the rover were to operate for one lunar day. One day on the Moon is equal to 14 days on Earth.

The stated objectives of Chandrayaan-3, India’s third lunar mission, were a safe and soft landing on the lunar surface, the rover moving on the moon’s surface, and in-situ scientific experiments.

Chandrayaan-3 is the ISRO’s follow-up attempt after the Chandrayaan-2 mission faced challenges during its soft landing on the lunar surface in 2019 and was eventually deemed to have failed its core mission objectives. (ANI)

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