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Sun, Space Weather, and Solar-Stellar Connection

Jan 20 – 24, 2025 Solar physics Conference
Asia/Kolkata timezone

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Investigations on suprathermal ions observed by ASPEX/STEPS on board Aditya-L1 during its earth-bound orbits

Jan 22, 2025, 4:40 PM
15m

Speaker

Mr Bijoy Dalal (Physical Research Laboratory, Ahmedabad, India)

Description

Suprathermal particles (with energies in the range from 10s of keV to 1-2 MeV) are thought to be the seed populations for solar energetic particles accelerated by shocks associated with interplanetary coronal mass ejections (ICMEs). Origins, energizations, and modulations of suprathermal particles in the interplanetary (IP) medium have been widely debated in the contemporary space era, thanks to numerous particle detectors on board various spacecraft. Recently launched India’s Aditya-L1 includes the SupraThermal Energetic Particle Spectrometer (STEPS), a subsystem of the Aditya Solar wind Particle EXperiment (ASPEX) suite, which can measure suprathermal and high energetic ions from multiple directions. After the launch on 02 September 2023, the Aditya-L1 spacecraft completed several highly elliptical earth-bound orbits before it started cruising towards the halo orbit around the L1 point on 19 September 2023. Two detector units, Parker Spiral (PS) and North Pointed (NP), were the first to start measurements from 10 September 2023 onwards whenever the altitude of the spacecraft crossed ~ 52000 km. During 10 – 18 September 2023, STEPS units sampled suprathermal ions from the Earth’s magnetosphere, magnetosheath, and IP medium. Coincidentally, three ICMEs hit the Earth during the above interval. The results from this interesting observation will be discussed in this presentation.

Contribution Type
Theme Connecting Solar Corona to Heliosphere

Primary author

Mr Bijoy Dalal (Physical Research Laboratory, Ahmedabad, India)

Co-authors

Prof. Dibyendu Chakrabarty (Physical Research Laboratory, Ahmedabad, India) Prof. Santosh V. Vadawale (Physical Research Laboratory, Ahmedabad, India) Dr Shiv Kumar Goyal (Physical Research Laboratory, Ahmedabad, India) Mr Jacob Sebastian (Physical Research Laboratory, Ahmedabad, India) Mr Neeraj Kumar Tiwari (Physical Research Laboratory, Ahmedabad, India) Dr Arpit R. Patel (Physical Research Laboratory, Ahmedabad, India) Dr M. Shanmugam (Physical Research Laboratory, Ahmedabad, India) Mr Piyush Sharma (Physical Research Laboratory, Ahmedabad, India) Dr Aveek Sarkar (Physical Research Laboratory, Ahmedabad, India) Mr Aaditya Sarda (Physical Research Laboratory, Ahmedabad, India) Mr Tinkal Ladiya (Physical Research Laboratory, Ahmedabad, India) Mr Abhishek J. Sharma (Physical Research Laboratory, Ahmedabad, India) Mr Nishant Singh (Physical Research Laboratory, Ahmedabad, India) Mr Sushil Kumar (Physical Research Laboratory, Ahmedabad, India) Mr Deepak Kumar Painkra (Physical Research Laboratory, Ahmedabad, India) Dr Prashant Kumar (Physical Research Laboratory, Ahmedabad, India) Mr Manan S. Shah (Physical Research Laboratory, Ahmedabad, India) Mr Pranav R. Adhyaru (Physical Research Laboratory, Ahmedabad, India) Mr Hiteshkumar L. Adalja (Physical Research Laboratory, Ahmedabad, India) Dr Swaroop B. Banerjee (Physical Research Laboratory, Ahmedabad, India) Dr K. P. Subramanian (Physical Research Laboratory, Ahmedabad, India) Dr Bhas Bapat (Indian Institute of Science Education and Research Pune) Dr Madhavji B. Dadhania (Physical Research Laboratory, Ahmedabad, India) Mr Abhishek Kumar (Physical Research Laboratory, Ahmedabad, India) Dr P. Janardhan (Physical Research Laboratory, Ahmedabad, India) Prof. Anil Bharadwaj (Physical Research Laboratory, Ahmedabad, India)

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