A Shimmering, Simmering Sunspot

This quick animation made by astrophotographer Alan Friedman shows a 30-minute view of sunspot 1520, a large region of magnetic activity on the Sun that’s currently aimed directly at Earth. Although 1520 has been quiet for the past couple of days, it’s loaded with a delta-class magnetic field — just right for launching powerful X-class flares our way. There’s no guarantee that it will, but then there’s no guarantee that it won’t either.

(Click the image to play the animation.)

Alan captured the images from his location in upstate New York using a 10″ Astro-Physics scope and PGR Grasshopper CCD. A master at solar photography — several of his hydrogen alpha images have been featured here on Universe Today as well as other popular astronomy news sites — Alan’s work never fails to impress.

A static, color version of sunspot 1520 can be seen here… what Alan calls “a magnetic beauty.”

Although the sunspots don’t change much over the course of the animation, the surrounding texture on the Sun’s photosphere can be seen to shift and move rapidly. These bright kernels are called granules, and are created by convective currents on the Sun. An individual granule typically lasts anywhere from 8 to 20 minutes and can be over 600 miles (1000 km) across.

The overall wavering effect is caused by distortion from Earth’s atmosphere.

While 1520 is facing Earth we’re subject to any flares or CMEs that may erupt from it, potentially sending a solar storm our way. In another week or so it will have rotated safely around the Sun’s limb and eventually dissipate altogether… but then, it is solar maximum and so there’s likely to be more active regions just like it (or even larger!) coming around the bend.

When they do come, there’s a good chance that Alan will grab some pics of those too.

Check out more of Alan’s photography on his site AvertedImagination.com.

Image © Alan Friedman. All rights reserved.

 

Jason Major

A graphic designer in Rhode Island, Jason writes about space exploration on his blog Lights In The Dark, Discovery News, and, of course, here on Universe Today. Ad astra!

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