Auroral activity captured at Hanle by IIA’s all-sky camera
GS3Economy · S&T · Environment · Security· Space technology (ISRO, missions)· Prelims·
Why in news
Indian Institute of Astrophysics (IIA) scientists captured intense red auroral activity at the Hanle observatory due to a G4-level geomagnetic storm.
Background
The aurora was triggered by a coronal mass ejection (CME) from Active Region 14341 near the sun's center. NASA confirmed the CME reached Earth approximately 28 hours after originating on January 18, resulting in an S4 radiation level.
Facts for Prelims
- S&THanle observatory is used by the Indian Institute of Astrophysics (IIA) for observing auroral activity.
- FactThe geomagnetic storm was classified as G4-level with an S4 radiation level.
- S&TCoronal Mass Ejections (CMEs) from Active Regions are primary drivers of geomagnetic storms.
- FactThe aurora captured at Hanle marked the sixth occurrence during the current solar cycle.
For Mains
Q. Discuss the implications of intense geomagnetic storms on satellite communications and power grids, and the importance of space weather monitoring for India.
Dimensions to cover in your answer
- Infrastructure vulnerability: Potential for induced currents to damage high-voltage power grids and undersea cables
- Communication disruption: Ionospheric disturbances affecting GPS accuracy and HF radio propagation
- Space situational awareness: Need for robust early warning systems to mitigate risks to orbital assets
Keywords: Space Weather · Coronal Mass Ejection · Geomagnetic Storm · Ionospheric Physics · Solar Cycle
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