Feeds

Sun spits out tiny squirt of plasma

Smallest ever coronal mass ejection

  • alert
  • submit to reddit

Next gen security for virtualised datacentres

The smallest coronal mass ejection ever observed has caught solar physicists totally by surprise, and reveals just how limited our understanding is of how these eruptions of solar material are generated.

A coronal mass ejection is an explosion inside the sun that ejects a huge quantity of plasma into space. The plasma, composed of highly energetic particles, streams outwards, sometime striking Earth, where it can create stunning Aurorae, interfere with satellites in orbit, and in severe cases, can even knock out electricity supplies.

A miniature coronal mass ejection

Normally, these ejections are enormous events, thought to begin in areas of the sun where the magnetic field lines are destabilised into twisted loops which contain a lot of energy. Typically, these areas span millions of square miles of the sun's surface. But researchers have now seen an ejection emerge from an area just 10,000 miles across.

Although the ejection was small, it was energetic enough to reach earth. The international team of astronomers responsible for the discovery says that the magnetic field lines in its area of origin were ten times more twisted than is usually seen in larger areas.

"Previously coronal mass ejections were thought to be huge, involving massive portions of the Sun's magnetic field and all the theoretical models are based around this assumption," commented Mullard Space Science Laboratory's Dr Lucie Green.

"However, this one was amazing in that it came from a tiny magnetic region on the Sun which would normally have been overlooked in the search for CME source regions. This will be an exciting area for further study."

Gaining a decent understanding of how coronal mass ejections are formed is vital to space scientists because they form the basis of space weather. The particles launched into space can wreak havoc, and cause serious harm to astronauts in orbit when they hit, so we need to e able to make good predictions of when they will occur.

Existing models for coronal mass ejections are all based on the large scale event normally observed, and scientists don't know for sure how much of an effect smaller events like this one actually have on space weather. Future missions, such as the planned joint US-UK-Japanese mission Solar B, should shed more light on this area. ®

Related stories

Astronomers spot fun-sized solar system
Green light for tests on really big telescope designs
Heat treatment straightens out MARSIS boom

Secure remote control for conventional and virtual desktops

More from The Register

next story
Our LOHAN spaceplane ballocket Kickstarter climbs through £8000
Through 25 per cent but more is needed: Get your UNIQUE rewards!
LOHAN tunes into ultra long range radio
And verily, Vultures shall speak status unto distant receivers
NASA to reformat Opportunity rover's memory from 125 million miles away
Interplanetary admins will back up data and get to work
SpaceX prototype rocket EXPLODES over Texas. 'Tricky' biz, says Elon Musk
No injuries or near injuries. Flight stayed in designated area
EOS, Lockheed to track space junk from Oz
WA facility gets laser-eyes out of the fog
Volcanic eruption in Iceland triggers CODE RED aviation warning
Lava-spitting Bárðarbunga prompts action from Met Office
LOHAN Kickstarter push breaks TWELVE THOUSAND POUNDS
That's right, folks, you've stumped up OVER 9,000 beer tokens - and counting
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.