solar flare

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flare, solar:

see chromospherechromosphere
[Gr.,=color sphere], layer of rarefied, transparent gases in the solar atmosphere; it measures 6,000 mi (9,700 km) in thickness and lies between the photosphere (the sun's visible surface) and the corona (its outer atmosphere).
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solar flare

[′sō·lər ′fler]
(astrophysics)
An abrupt increase in the intensity of the H-α and other emission near a sunspot region; the brightness may be many times that of the associated plage.
References in periodicals archive ?
In the second study, scientists investigated a connection between solar flares and activity in Earth's atmosphere.
Solar flares are categorized by the amount of their energy.
Unlike other space weather events, solar flares travel at the speed of light, meaning we get no warning that theyre coming.
In this communication the stochastic models of solar flare duration as solar activity have been investigated.
The largest solar flare in modern history happened only 12 years ago.
It's amazing to see all these news stories on something that, at the time I wrote it, seemed more like an infrequent anomaly.” To commemorate all this recent solar flare activity, the movie is being offered free for a limited time.
Earlier this week a solar flare occurred and started Thursday's geomagnetic storm, which sparked the bright aurora.
It will be described how GNSS can provide a useful and accurate way of monitoring solar flares and EUV flux rate by detecting and measuring with GNSS the spatial pattern of the sudden ionospheric overionization, which is associated to the corresponding prompt EUV solar flux increase (basically summarizing the method and results obtained in Hemandez-Pajares et al.
This year, the solar flares should be particularly intense because the peak 11-year Solar Maximum also coincides with a longer solar cycle.
Three solar flares of the strongest type were recorded on one day May 12, 2013.
Solar flares are classified using the letters B, C, M and X with the B class being relatively mild and quite common during times of high solar activity.
WASHINGTON -- The Sun has unleashed three potent solar flares in just under 24 hours, marking the most intense activity yet this year and causing limited interruptions to high-frequency radio communications.