The flare (seen in different wavelengths on the left and right) has already caused radio blackouts on Earth and a minor geomagnetic storm could occur tomorrow. Nasa’s Solar Dynamics Observatory (SDO), illustration shown, was launched on 11 February 2010 and has observed the sun ever since. In the red zone of this map, ham radio operators and mariners may have noticed brief but complete blackout conditions at frequencies below 10 MHz. It was an M-class flare, and it might have produced a brief communications blackout on Monday night.
Giant magnetic loops dance on the sun’s horizon as a solar flare erupts on January 12-13, 2015.
Solar flares are powerful bursts of radiation from the sun, which release potentially harmful radiation. This solar flare caused a pulse of extreme UV radiation, which ionized Earth’s upper atmosphere over Australia and the Indian Ocean and may have caused a brief communications blackout at frequencies below about 10 MHz.
Mariners and ham radio operators may have noticed a brief communications blackout at frequencies below about 10 MHz, on the night of January 12, 2015, over Australia and the Indian Ocean. A flare erupts from the right side of the sun in this image from shortly before midnight EST on January 12, 2015. Bottom line: The first notable solar flare of 2015 was an M-class flare that took place during the night of January 12, according to clocks in North America. An observation of the sun -- at a wavelength of 304A -- made by NASA's Solar Dynamics Observatory shortly after Wednesday's X-class flare. The X4.9 flare was caught through the range of SDO fliters, including this dramatic view as seen through the 131A filter.
In the case of AR1990, a large sunspot can be seen at the base of the coronal loops that erupted to generate the powerful flare.


Approximately an hour after the flare, the CME grew and continued to barrel into interplanetary space.
The sun has erupted with its first X-class solar flare of 2015, a not-so-subtle reminder that it can still muster the energy required to generate the most powerful class of solar explosion.
Based in New Mexico, Ashcraft reports that the blackout was most obvious in the frequency range of 15 MHz to 26 MHz.
During solar flares, which are triggered when intense activity in the sun’s corona cause rapid magnetic reconfiguration events (known as ‘reconnection’), the intense X-ray and extreme-ultraviolet (EUV) radiation generated can have near immediate impacts on our planet. In addition to the solar flare and consequent radio blackout, the flaring region also created a coronal mass ejection — a magnetized bubble of energized solar plasma — that solar astronomers will be keeping an eye on. The flare was located at active region (AR) 2297 that has been crackling with mid-level flare activity all week. An intense solar flare took out low-frequency radio communications over South America and the Atlantic Ocean earlier today (Sept.
NASA's Solar Dynamics Observatory spacecraft captured an amazing video of the solar flare from space.
That M7-class flare was strong enough that the extra atmospheric charge interfered with low-frequency radio communications over South America and the Atlantic Ocean, with weaker effects farther out.
However, regardless of its importance and close proximity, our nearest star holds many mysteries that continue to fox solar physicists after decades of modern studies with cutting-edge observatories.
ET (16:22 UT), lighting up a huge area in the lower solar corona (the sun’s magnetically dominated ‘atmosphere’). As the X2 flare was approximately Earth-directed, there’s the possibility that the CME may also be headed in our direction. The science gathered from looking at our geomagnetic field will no doubt aid space weather models and will help explain how the extreme magnetic activity in the sun’s corona triggers energetic flaring events.


EDT (1453 GMT), the medium-size M7-class solar flareburst from the sunspot called Active Region 2422 (AR2422). At the time of this writing, there was a 40-percent chance of another, similarly sized solar flare and a 5 percent chance of a powerful X-class flare during the next 24 hours. 28) burst from an active sunspot and caused radio blackouts over South America and the Atlantic Ocean. One of the biggest mysteries surrounding the sun is the underlying mechanisms that drive solar flares and coronal mass ejections (CMEs). As can be seen from Ashcraft’s radio observations, the strong radio blackout lasted around 15 minutes. 28, a solar flare caused a blackout in low-frequency radio communications over South America and the Atlantic Ocean, with weaker effects farther out. X-class flares can cause planet-wide radio blackouts and radiation storms, and are 10 times more powerful than M-class flares. Monday evening (EST), the sun reminded us that it hasn't quite finished with the current solar maximum (of solar cycle 24), unleashing a powerful X4.9 solar flare -- the biggest of 2014.
Then, as magnetic field lines from the sun's interior forced together and through the solar photosphere, large-scale reconnection events occurred. An armada of space telescopes witnessed the event, including NASA's Solar Dynamics Observatory that can spy the sun's temper tantrums in astounding high definition.



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