·

Coronal holes on the farside of the Sun

solar-coronal-holes-on-the-farside-of-the-sun

For the past week, all eyes have been on the Earth-side of the sun, where sunspots 1158 and 1161-1162 have unleashed some of the strongest flares in years.

Meanwhile, the farside of the Sun has been busy, too.

Here is the movie from NASA's STEREO-B probe covering the first 20 hours of Feb. 19th. 

A huge active region is transiting the farside and crackling with flares; it will turn toward Earth in about a week.In this 3-D simulation of the rotating Sun, we can see a large coronal hole on the side of the Sun that is not facing Earth. Regions of coronal holes on the Sun can be 100 times less dense than surrounding material. For this reason, magnetic field lines in coronal holes allow dense streams of proton particles to propagate away from the Sun into surrounding space. We could be looking at some more energetic bursts of solar activity during this period when the Sun rotates.

 

If you value what we do here, open your ad-free account and support our journalism.

Share:

Producing content you read on this website takes a lot of time, effort, and hard work. If you value what we do here, select the level of your support and register your account.

Your support makes this project fully self-sustainable and keeps us independent and focused on the content we love to create and share.

All our supporters can browse the website without ads, allowing much faster speeds and a clean interface. Your comments will be instantly approved and you’ll have a direct line of communication with us from within your account dashboard. You can suggest new features and apps and you’ll be able to use them before they go live.

You can choose the level of your support.

Stay kind, vigilant and ready!

$5 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$50 /year

$10 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$100 /year

$25 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$200 /year

You can also support us by sending us a one-off payment using PayPal:

Leave a reply

Your email address will not be published.