HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Topics » Science » Science (Group) » Amateur Photographers Hav...

Wed Jan 29, 2020, 02:46 AM

Amateur Photographers Have Discovered a New Form of the Northern Lights


By UNIVERSITY OF HELSINKI JANUARY 28, 2020



The auroral dunes appear as a green-tinged and even pattern of waves resembling a striped veil of clouds or dunes on a sandy beach. Credit: Kari Saari

Working together with space researchers, Finnish amateur photographers have discovered a new auroral form. Named ‘dunes’ by the hobbyists, the phenomenon is believed to be caused by waves of oxygen atoms glowing due to a stream of particles released from the Sun.

In the recently published study, the origins of the dunes were tracked to a wave guide formed within the mesosphere and its boundary, the mesopause. The study also posits that this new auroral form provides researchers with a novel way to investigate conditions in the upper atmosphere.

The study was published in the first issue of the high-impact journal AGU Advances.

An unknown fingerprint appears in the sky
Minna Palmroth, Professor of Computational Space Physics at the University of Helsinki, heads a research group developing the world’s most accurate simulation of the near-Earth space and space weather that cause auroral emissions.

The sun releases a steady flow of charged particles, known as the solar wind. Reaching the Earth’s ionized upper atmosphere, the ionosphere, they create auroral emissions by exciting atmospheric oxygen and nitrogen atoms. The excitation state is released as auroral light.

More:
https://scitechdaily.com/amateur-photographers-have-discovered-a-new-form-of-the-northern-lights/

5 replies, 2337 views

Reply to this thread

Back to top Alert abuse

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 5 replies Author Time Post
Reply Amateur Photographers Have Discovered a New Form of the Northern Lights (Original post)
Judi Lynn Jan 2020 OP
CaliforniaPeggy Jan 2020 #1
Judi Lynn Jan 2020 #3
Judi Lynn Jan 2020 #2
AllaN01Bear Jan 2020 #5
OxQQme Jan 2020 #4

Response to Judi Lynn (Original post)

Wed Jan 29, 2020, 03:09 AM

1. Fascinating!

There's a video in the link that was mesmerizing.

Thanks for posting!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to CaliforniaPeggy (Reply #1)

Wed Jan 29, 2020, 06:40 AM

3. It was the first time I'd ever seen anything like that. Thanks for your comment.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Judi Lynn (Original post)

Wed Jan 29, 2020, 06:21 AM

2. Amateur stargazers capture new form of northern lights


Nicola Davis 5 hrs ago

A new form of the northern lights has been captured by amateur enthusiasts, researchers have revealed.



© Lucas Jackson/REUTERS The Northern Lights are seen above the ash plume of a volcano in Eyjafjallajokull, Iceland, April 22, 2010. Picture taken April 22, 2010. REUTERS/Lucas Jackson/File Photo


The phenomenon of glowing green lights rippling across the night sky, also known as the aurora borealis, have long captivated the public and experts alike.

Some have suggested the lights are depicted in prehistoric cave paintings, while the Latin term is said to have been coined by the astronomer Galileo Galilei.

Auroras are produced when charged particles, such as electrons, are ejected by the sun and funnelled towards the Earth’s poles by our planet’s magnetic field. There they interact with gases in the atmosphere, including oxygen and nitrogen, increasing the energy of these gases – energy which is subsequently released as light.

“This is the same as neon lamps,” said Minna Palmroth, a professor of computational space physics at the University of Helsinki. “Basically we can say the auroras are celestial neon lamps.”

More:
https://www.msn.com/en-us/news/technology/amateur-stargazers-capture-new-form-of-northern-lights/ar-BBZqoQh?li=BBnbfcL

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Judi Lynn (Reply #2)

Thu Jan 30, 2020, 07:56 PM

5. science is cool

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Judi Lynn (Original post)

Thu Jan 30, 2020, 07:53 AM

4. Halo

?resize=865,452&quality=65

Reply to this post

Back to top Alert abuse Link here Permalink

Reply to this thread