India's Aditya-L1 solar mission spacecraft commences collecting scientific data
Bengaluru (PTI): India's Aditya-L1 solar mission spacecraft has commenced collecting scientific data to help scientists analyse particles surrounding Earth, ISRO said on Monday.
The sensors on board India's first solar observatory have begun measuring ions and electrons at distances greater than 50,000 km from Earth, ISRO announced in a post on X.
The national space agency said that the sensors on STEPS or the Supra Thermal & Energetic Particle Spectrometer instrument began measuring supra-thermal and energetic ions and electrons at distances greater than 50,000 km from Earth.
The instrument is a part of the Aditya Solar Wind Particle EXperiment (ASPEX) payload of Aditya L1.
STEPS comprises six sensors, each observing in different directions and measuring supra-thermal and energetic ions ranging from 20 keV/nucleon to 5 MeV/nucleon, in addition to electrons exceeding 1 MeV. These measurements are conducted using low and high-energy particle spectrometers.
The data collected during Earth's orbits helps scientists to analyse the behaviour of particles surrounding the Earth, especially in the presence of its magnetic field.
STEPS was activated on September 10 at a distance greater than 50,000 km from Earth. This distance is equivalent to more than eight times the Earth's radius, placing it well beyond Earth's radiation belt region.
After completing the necessary instrument health checks, data collection continued until the spacecraft had moved farther than 50,000 km from Earth.
These STEPS measurements will persist during the cruise phase of the Aditya-L1 mission as it progresses toward the Sun-Earth L1 point. They will continue once the spacecraft is positioned in its intended orbit.
Data collected around L1 would provide insights into the origin, acceleration, and anisotropy of solar wind and space weather phenomena.
STEPS was developed by the Physical Research Laboratory with support from the Space Application Centre in Ahmedabad.
Aditya-L1 was launched by ISRO on September 2.
The spacecraft carries seven different payloads to study the Sun, four of which will observe the light from the Sun and the remaining three will measure in situ parameters of the plasma and magnetic fields.
Aditya-L1 will be placed in a halo orbit around the Lagrangian Point 1 (L1), which is 1.5 million km from the Earth in the direction of the Sun. It will revolve around the Sun with the same relative position and hence can see the Sun continuously.
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Banker who attended Kunal Kamra's show summoned as witness, says Mumbai police
Mumbai (PTI): A banker who had attended Kunal Kamra's controversial show in the city was summoned as a witness after a case was registered against the comedian over his alleged jibes against Maharashtra deputy Chief Minister Eknath Shinde, police said on Wednesday.
While the police later told the Navi Mumbai-based man that his presence was not needed immediately, Kamra took to social media to express regret over the inconvenience caused to him, and offered to "schedule your next vacation anywhere you'd like in India."
The comedian also shared a media report which said the banker had to cut short his vacation following the police summons.
On Tuesday, police had denied reports that members of the audience who had attended Kunal Kamra's show had been summoned to record their statements.
A summons was sent to the banker, who had booked a ticket for Kamra's show through the BookMyShow app, on his mobile phone on March 29, a senior police official said.
An FIR was registered against Kamra for alleged defamation at the Khar police station on March 28 on a complaint lodged by Shiv Sena MLA Murji Patel.
The banker was asked to be present as the police wanted to record statements of witnesses, the official said.
Before sending him a notice, the investigating officer had called the banker and asked him to visit the Khar police station, the official added.
But later, after certain developments in the case, the police called the banker again and told him that his appearance was not required immediately, the officer said, adding he could be called whenever his statement is necessary.
Kamra, on the other hand, seized on media reports about the banker having to cancel his vacation due to the police summons.
"I am deeply sorry for the inconvenience that attending my show has caused to you. Please email me so that I can schedule your next vacation anywhere you'd like in India," Kamra posted on X.
According to the reports, the man, who was to return from vacation on April 6, had to come back to Mumbai on Monday.
The case stems from a parody song performed by Kamra at a show in Mumbai which appeared to target Shinde, who heads the Shiv Sena following his rebellion against Uddhav Thackeray, and call him a traitor. The song, though, did not name Shinde.
Angry Shiv Sena activists last month vandalised the studio where the show had been recorded.
On March 28, the Madras High Court granted interim anticipatory bail to the comedian. Justice Sunder Mohan also issued a notice to Khar police, and posted the matter to April 7 for further hearing.
