After moon landing venture, ISRO eyes Sept 2 for launch of Aditya-L1 solar mission
Bengaluru, Aug 26: After the successful moon lander venture, ISRO is now gearing up for the launch of a solar mission in a week's time, likely on September 2, to study the Sun.
Aditya-L1 spacecraft is designed for providing remote observations of the solar corona and in situ observations of the solar wind at L1 (Sun-Earth Lagrangian point), which is about 1.5 million kilometres from the earth.
It will be the first dedicated Indian space mission for observations of the Sun to be launched by the Bengaluru-headquartered space agency.
The Aditya-L1 mission, aimed at studying the Sun from an orbit around the L1, would carry seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun, the corona, in different wavebands.
Aditya-L1 is a fully indigenous effort with the participation of national institutions, an ISRO official said.
The Bengaluru-based Indian Institute of Astrophysics (IIA) is the lead institute for the development of Visible Emission Line Coronagraph payload. While Inter-University Centre for Astronomy and Astrophysics, Pune, has developed the Solar Ultraviolet Imager payload for the mission.
Aditya-L1 can provide observations on the corona, and on the solar Chromosphere using the UV payload and on the flares using the X-ray payloads. The particle detectors and the magnetometer payload can provide information on charged particles and the magnetic field reaching the halo orbit around L1.
The satellite, realised at U R Rao Satellite Centre here, arrived at the ISRO's spaceport of Sriharikota in Andhra Pradesh, two weeks ago.
"Most likely the launch will take place on September 2 ", an ISRO official said.
The spacecraft is planned to be placed in a halo orbit around the L1 of the Sun-Earth system.
A satellite placed in the halo orbit around the L1 point has the major advantage of continuously viewing the Sun without any occultation/eclipses, ISRO noted.
"This will provide a greater advantage of observing the solar activities and its effect on space weather in real time," it said.
Using the special vantage point L1, four payloads directly view the Sun and the remaining three payloads carry out in-situ studies of particles and fields at the L1, thus providing important scientific studies of the propagatory effect of solar dynamics in the interplanetary medium.
"The suits of Aditya L1 payloads are expected to provide most crucial informations to understand the problem of coronal heating, coronal mass ejection, pre-flare and flare activities and their characteristics, dynamics of space weather, propagation of particle and fields etc", ISRO said.
The major science objectives of the Aditya-L1 mission are: Study of Solar upper atmospheric (chromosphere and corona) dynamics; Study of chromospheric and coronal heating, physics of the partially ionised 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.
They also include 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.
The instruments of Aditya-L1 are tuned to observe the solar atmosphere, mainly the chromosphere and corona. In-situ instruments will observe the local environment at L1.
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Cong govt ended ‘darkness’ in 11 months of rule in T’gana: CM Revanth Reddy rebuts PM Modi's remark
Hyderabad (PTI): During the last 11 months, the Congress government in Telangana has reversed an air of gloom and despair under the previous BRS regime and ended the "darkness", Chief Minister A Revanth Reddy said on Saturday.
He was responding to a post by Prime Minister Narendra Modi that under Congress rule developmental trajectory and fiscal health is turning from bad to worse in Himachal Pradesh, Karnataka and Telangana.
“I am happy to clarify several misconceptions and factual errors in your statements about my state and our government," Reddy said in his post.
Prime Minister Narendra Modi Friday in a series of posts said the Congress stands "badly exposed" in front of people for promising to them what the party knows it will never be able to deliver.
“Every promise made by us to people is a sacred commitment for us. In the last 11 months, we have reversed an air of gloom & despair under BRS, and ended the darkness. Like a morning sun, Telangana is now Rising,” Reddy said in the post addressed to Modi.
Within two days of taking charge, the Telangana government fulfilled its first and second promise - free bus travel for women across all government buses, and a healthcare and hospitalisation cover of 10 lakhs under Rajiv Aarogyasree, the CM pointed out.
Even before completion of first year of rule, the Congress government has implemented India's largest ever, state-level farmer loan waiver of Rs 18,000 crore covering over 22 lakh farmers, he said responding to PM’s comments that in Telangana, farmers are awaiting the (loan) waiver they were promised.
Women get free electricity, with no domestic power charge for their homes up to 200 units, Reddy noted.
The CM also claimed that his government has held the largest recruitment drive and is regularly holding exams of all levels and provided jobs to over 50,000 eligible youth, a record “unmatched by any BJP state government.”
The CM said the government is rejuvenating River Musi, which was allegedly neglected by the previous government and protecting lakes and other precious water bodies, encroached upon and destroyed wantonly with abandon in the last 10 years.
