ОКО ПЛАНЕТЫ > Новости погоды и стихий > На Солнце произошла первая в 2012 году вспышка высшего балла X2
На Солнце произошла первая в 2012 году вспышка высшего балла X230-01-2012, 08:05. Разместил: VP |
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RADIATION STORM: Accelerated by Friday's X-flare, energetic protons from the sun are still swarming around Earth on Jan. 29th. The radiation storm ranks S2 on NOAA scales, which means it is not a severe storm. Nevertheless, it can still affect spacecraft and satellites at the nuisance level. Click on the image for an animated demonstration: That was a coronagraph image from the Solar and Heliospheric Observatory (SOHO). The many speckles and streaks are energetic protons striking SOHO's onboard digital camera. Stronger radiation storms (S4 to S5) can fill images like these with "snow," rendering them useless for normal operations. The current storm will probably subside later today and restore SOHO's clear view of the sun. FRIDAY X-FLARE: Departing sunspot 1402 unleashed an X2-class solar flare on Jan. 27th at 18:37 UT. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash: Sunspot 1402 is rotating onto the far side of the sun, so the blast site was not facing Earth at the time of the explosion. Nevertheless, energetic protons accelerated by the blast are now surrounding our planet, and an S2-class radiation storm is in progress. The explosion also produced a spectacular coronal mass ejection (CME). A movie from the Solar and Heliospheric Observatory shows the cloud racing away from the sun at 2500 km/s or 5.6 million mph. Work by analysts at the Goddard Space Weather Lab shows that the CME will just miss Earth when its edge passes by our planet on Jan. 30-31. Click to view an animated forecast track: The cloud will deliver a glancing blow to Mars on Feb 1st and a nearly-direct hit to NASA's STEREO-Ahead spacecraft on Jan. 29th. Solar flare alerts: text, Вернуться назад |