ISRO's Aditya-L1, Chandrayaan-2 Capture Recent Solar Eruption Behind Aurora Borealis
The Indian Space Research Organisation (ISRO) has captured signatures of the recent solar eruptive events from Earth, Sun-Earth?L1?Point, and the Moon. According to the ISRO, both?Aditya-L1?and Chandrayaan-2 have made observations and signatures have been?analysed.
Aditya-L1 observes?Solar Eruption from L1
The X-ray payloads?on-board?Aditya-L1?(SoLEXS and HEL1OS) have observed the multiple X- and M-class flares from these regions during the last few days while the in-situ magnetometer (MAG) payload has also observed the events as it passed by the?L1?point.
What Chandrayaan-2 captured
While the?Aditya-L1?observes the Sun from the first Sun-Earth Lagrange point, the Chandrayaan-2 orbiter has also captured the signatures of these solar eruptive events from the lunar polar orbit. XSM has observed many interesting phenomena associated with this geomagnetic storm.
Also read:?ISRO's Aditya-L1 To Track The Sun During The Celestial Event
The large solar flares (> M5 class), manifested as spikes, are autonomously identified by the onboard logic of?XSM,?when the internal mechanism was activated to reduce the incident X-ray flux by bringing a filter in front of the detector,?so as to?prevent its saturation.
While the XSM primarily monitors solar X-rays, it has also provided information about the local?high energy?particle environment?by means of?counting the events when the?upper level?discriminator (ULD) threshold is crossed.
Biggest solar storm since 2003
A powerful solar storm impacted Earth in early May 2024, triggered by the highly active region AR13664. This region unleashed a series of X-class flares and coronal mass ejections (CMEs) directed at Earth.
The resulting geomagnetic storm was the most intense since 2003 (Dst index -412 nT), causing disruptions to communication and GPS systems.
Also read:?Ladakh Witnesses Rare Spectacle As Aurora Borealis Illuminates Sky
This is the biggest Geomagnetic storm since 2003 in terms of its strength, as the flaring region on the Sun was as big as the historically important Carrington event that took place in 1859. Multiple X-class flares and CMEs have hit the earth in the past few days.
Impact of solar storm
The Master Control Facility (MCF) team in ISRO was on alert and watchful of any Geomagnetic activity experienced by geo?spacecrafts.?With respect to?disturbances on?spacecrafts, the magnetic?torquer?duty cycle changes due to increased accumulation of disturbances resulting in frequent momentum dumps.
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