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The 4 August flare was among the largest since records began. [10] It saturated the Solrad 9 X-ray sensor at approximately X5.3 but was estimated to be in the vicinity of X20, [11] the threshold of the very rarely reached R5 on the NOAA radio blackout space weather scale. [12] A radio burst of 76,000 sfu was measured at 1 GHz. [8]
Since 1996, geomagnetic storms and solar flares have been monitored from the Solar and Heliospheric Observatory (SOHO) satellite, a joint project of NASA and the European Space Agency (ESA). Extreme geomagnetic storms were registered in 2003 and 2024 , both sparking northern lights as far south as Florida.
A solar flare is a relatively intense, localized emission of electromagnetic radiation in the Sun's atmosphere. Flares occur in active regions and are often, but not always, accompanied by coronal mass ejections, solar particle events, and other eruptive solar phenomena. The occurrence of solar flares varies with the 11-year solar cycle.
Flares lead to brief radio blackouts for about 30 minutes in western US Powerful ‘X-class’ solar flare from rapidly growing sunspot triggers radio blackout in US Skip to main content
May 2024 solar storms: X1.2(X1.3)-class flares [93] and X4.5-class flare. [94] The flares with a magnitude of 6–7 occurred between 30 April and 4 May 2024. On 5 May the strength of the solar storm reached 5 points, which is considered strong according to the K-index. The rapidly growing sunspot AR3663 became the most active spot of the 25th ...
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Most types of solar radio bursts are produced by the plasma emission mechanism operating in different contexts, although some are caused by (gyro)synchrotron and/or electron-cyclotron maser emission. Solar radio bursts of Types I, II, and III as seen in dynamic spectrum observations from the Learmonth Solar radiospectrograph.
Our life-giving death star is experiencing its "solar maximum," which sounds like the name of a Christian rock band and is defined as the peak activity period within the sun's 11-year solar cycle.