Sun Shoots Brilliant Solar Flare [April 16, 2012]

maestro

Magnetic fields on the sun erupted around 17:45 UT on April 16th, producing one of the most visually-spectacular explosions in years. NASA's Solar Dynamics Observatory recorded the blast at extreme ultraviolet wavelengths:

The explosion, which registered M1.7 on the Richter Scale of solar flares, was not Earth-directed. A CME produced by the blast is likely to hit NASA's STEREO-B spacecraft, but probably no planets.

This event confirms suspicions that an active region of significance is rotating onto the Earth-facing side of the sun

Using data from SDO, Steele Hill of NASA's Goddard Space Flight Center has assembled a must-see movie of the event. The movie shows the explosion unfolding at 304 Angstroms, a wavelength which traces plasma with a temperature around 80,000 K.

以上影片乃youtube提供,與本站無關; 若無法觀看,可查看原網址。

以上影片乃youtube提供,與本站無關; 若無法觀看,可查看原網址。

The Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory is a series of devices set up to take images of the Sun every few seconds and through a variety of filters. This video is a 12 hour series of data gathered by the 304Å and 171Å filters. The 304Å filter is designed to see areas of cooler dense filaments and prominences of plasma above the visible surface of the Sun, while the 171Å filter is especially good at showing loops and arcs, activity mostly in the upper transition region and corona. The video shows a large flare and CME on the eastern limb on 2012-04-16. There are almost 2400 images used to make the frames for the video, 1200 of each wavelength. What you're seeing here is actual time sped up by almost 1000 times.

Narhhy

very pretty!