ISRO gearing up for mission to study Sun, satellite arrives at Sriharikota for launch
Bengaluru (PTI): Aditya-L1, the first space-based Indian observatory to study the Sun, is getting ready for its launch soon, ISRO said on Monday.
The satellite, realised at U R Rao Satellite Centre here, has arrived at the ISRO's spaceport in Sriharikota in Andhra Pradesh, the Bengaluru-headquartered national space agency said in an update on the mission.
"Mostly September first week," an ISRO official told PTI when asked about the date of the launch.
The spacecraft is expected to be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system, which is about 1.5 million kilometres from the Earth.
A satellite placed in the halo orbit around the L1 point has a 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.
The spacecraft carries seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun (the corona) using electromagnetic and particle and magnetic field detectors.
Using the special vantage point L1, four payloads will directly view the Sun and the remaining three payloads would 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 information 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; 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 coronal mass ejections; 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, while the in-situ instruments will observe the local environment at L1.
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Karnataka School Edu Dept prohibits children from being made to dance to obscene songs
Bengaluru (PTI): The Karnataka School Education Department has issued a circular strictly prohibiting children from being made to dance to obscene songs in educational and cultural programmes.
It stated that such dances would negatively impact students' mental health and moral values. It will create indiscipline and harm the sanctity of education.
"All the Deputy Directors (Administration) of the state's School Education Department have been asked to take strict measures to prevent children or students from dancing to obscene songs in all government, aided and unaided schools in the state," the office of the commissioner of the School Education Department said in a recent circular.
"If it is found that children are being made to dance to obscene songs, appropriate action will be taken against the headmaster or management of such school," it added.
The department also listed certain measures in this regard, which include: strictly prohibiting children from being made to dance to obscene songs during educational and cultural programmes; selecting songs that are inspiring, positive, instilling national pride in children and reflecting the greatness, dignity, values, culture, and morality of the state.
Stating that the school headmaster and management are responsible for selecting songs and dances for cultural programmes, it said, they should also ensure that students wear decent clothes in dance or cultural programmes.
