Begin typing your search above and press return to search.
proflie-avatar
Login
exit_to_app
DEEP READ
Schools breeding hatred
access_time 14 Sep 2023 10:37 AM GMT
Ukraine
access_time 16 Aug 2023 5:46 AM GMT
When ‘Jai Sree Ram’ becomes a death call
access_time 15 Feb 2024 9:54 AM GMT
Strengthening the Indian Republic
access_time 26 Jan 2024 4:43 AM GMT
When the US and UK fight Houthis
access_time 17 Jan 2024 6:08 AM GMT
exit_to_app
Homechevron_rightIndiachevron_rightAditya-L1's solar wind...

Aditya-L1's solar wind particle experiment payload starts operation: ISRO

text_fields
bookmark_border
Aditya-L1s solar wind particle experiment payload starts operation: ISRO
cancel

Bengaluru: India's Aditya-L1 satellite's Aditya Solar Wind Particle Experiment payload has started operating and is operating as intended, the Indian Space Research Organisation (ISRO) announced on Saturday.

On September 2, the Aditya-L1 spacecraft was successfully launched by ISRO's Polar Satellite Launch Vehicle (PSLV-C57) from the second launch pad of the Satish Dhawan Space Centre in Sriharikota.

Aditya-L1 is the first Indian space-based observatory to study the Sun from a halo orbit around the first Sun-earth Lagrangian point (L1), which is located roughly 1.5 million km from Earth.

In a statement, ISRO said the Aditya Solar Wind Particle Experiment (ASPEX) comprises two cutting-edge instruments 'the Solar Wind Ion Spectrometer (SWIS) and the SupraThermal and Energetic Particle Spectrometer (STEPS).

The STEPS instrument was operational on September 10, 2023.

The SWIS instrument was activated on November 2, 2023, and has exhibited optimal performance.

"SWIS, utilising two sensor units with a remarkable 360° field of view each, operates in planes perpendicular to one another," the statement read.

According to ISRO, the instrument has successfully measured solar wind ions, primarily protons and alpha particles.

A sample energy histogram acquired from one of the sensors over two days in November 2023 illustrates variations in proton and alpha particle (doubly ionized helium, He2+) counts, the agency said.

"These variations were recorded with nominal integration time, providing a comprehensive snapshot of solar wind behaviour," ISRO said.

The directional capabilities of SWIS enable precise measurements of solar wind protons and alphas, contributing significantly to addressing longstanding questions about solar wind properties, underlying processes, and their impact on Earth, the space agency explained.

"The change in the proton and alpha particle number ratio, as observed by SWIS, holds the potential to provide indirect information about the arrival of Coronal Mass Ejections (CMEs) at the Sun-Earth Lagrange Point L1," ISRO said.

The enhanced alpha-to-proton ratio is often regarded as one of the sensitive markers of the passage of interplanetary coronal mass ejections (ICMEs) at the L1 and is hence considered crucial for space weather studies.


With PTI inputs

Show Full Article
TAGS:ISROAditya L1Solar mission
Next Story