Solar Cinco de Mayo

The entire universe in blog form
May 8 2012 10:25 AM

Solar Cinco de Mayo

Alan Friedman is a photographer who takes amazing pictures of the Sun. While others were out celebrating Cinco de Mayo this past weekend, he was outside taking another jaw-dropping image of the nearest star in the Universe:

Phil Plait Phil Plait

Phil Plait writes Slate’s Bad Astronomy blog and is an astronomer, public speaker, science evangelizer, and author of Death From the Skies!  

Advertisement

Yegads! Click to ensolarnate, and he has a greyscale version, too.

I love the detail and texture of his images. He has an excellent telescopic setup which yields the superb resolution, and he employs an old trick to get the texture: he inverts the image of the Sun's disk, making black stuff look white and vice-versa. This is a technique that's been used by astronomers for decades to enhance images; our eyes see details better that way. When Alan does it, I swear it makes the Sun look like a 1.4 million-kilometer-wide shag rug.

All the way on the left, just on the Sun's edge, you can see a group of sunspots just rotating into view. That's Active Region 1476, and Alan provided me with a clear picture of them (no tom-foolery) which I've put here. That monster group is about 100,000 kilometers (60,000 miles) across, so when I saw them I immediately suspected trouble.

… and sure enough, they had a medium-sized eruption just this morning. At 13:00 UTC they blasted off an M1.4 class flare; big enough to potentially cause some radio disruption and maybe some aurorae. NASA's Solar Dynamics Observatory got a dramatic view of the eruption:


Flares this size are relatively common; there was one in late March for example. Bigger ones happen less frequently, though again we did see one 50 times this powerful in March as well! We'll have to see if today's eruption will cause any aurorae, and either way, we should keep our eyes on AR1476.

Image credit: Alan Friedman, used by permission. Tip o' the Sun visor to Camilla Corona SDO on Google+ for the video.



Related Posts:


TODAY IN SLATE

Foreigners

More Than Scottish Pride

Scotland’s referendum isn’t about nationalism. It’s about a system that failed, and a new generation looking to take a chance on itself. 

iOS 8 Comes Out Today. Do Not Put It on Your iPhone 4S.

Why Greenland’s “Dark Snow” Should Worry You

Three Talented Actresses in Three Terrible New Shows

The Human Need to Find Connections in Everything

It’s the source of creativity and delusions. It can harm us more than it helps us.

Jurisprudence

Happy Constitution Day!

Too bad it’s almost certainly unconstitutional.

The Ungodly Horror of Having a Bug Crawl Into Your Ear and Scratch Away at Your Eardrum

My Father Was James Brown. I Watched Him Beat My Mother. Then I Married Someone Like Him.

  News & Politics
Weigel
Sept. 17 2014 12:02 PM Here It Is: The Flimsiest Campaign Attack Ad of 2014, Which Won’t Stop Running
  Business
Business Insider
Sept. 17 2014 1:36 PM Nate Silver Versus Princeton Professor: Who Has the Right Models?
  Life
Outward
Sept. 17 2014 1:59 PM Ask a Homo: Secret Ally Codes 
  Double X
The XX Factor
Sept. 17 2014 1:26 PM Hey CBS, Rihanna Is Exactly Who I Want to See on My TV Before NFL Games
  Slate Plus
Slate Fare
Sept. 17 2014 9:37 AM Is Slate Too Liberal?  A members-only open thread.
  Arts
Brow Beat
Sept. 17 2014 1:01 PM A Rare, Very Unusual Interview With Michael Jackson, Animated
  Technology
Future Tense
Sept. 17 2014 12:35 PM IOS 8 Comes Out Today. Do Not Put It on Your iPhone 4S.
  Health & Science
Bad Astronomy
Sept. 17 2014 11:18 AM A Bridge Across the Sky
  Sports
Sports Nut
Sept. 15 2014 9:05 PM Giving Up on Goodell How the NFL lost the trust of its most loyal reporters.