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APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 4:10 am
by APOD Robot
A Flag Shaped Aurora over Sweden
Explanation: It appeared, momentarily, like a 50-km tall banded flag. In mid-March, an energetic
Coronal Mass Ejection directed toward a clear magnetic channel to Earth led to one of the more intense
geomagnetic storms of recent years. A
visual result was wide spread
auroras being seen over many countries near
Earth's magnetic poles. Captured over
Kiruna,
Sweden, the image features an unusually straight
auroral curtain with the
green color emitted low in the
Earth's atmosphere, and red many kilometers higher up. It is unclear where the rare
purple aurora originates, but it might involve an unusual
blue aurora at an even lower altitude than the green, seen superposed with a much higher red. As the Sun continues near its
top level of
surface activity, colorful
nights of auroras over Earth are likely to continue.
[/b]
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 9:10 am
by hoohaw
At last! An intergalactic flag for astronomers, physicists, and their friends!
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 9:13 am
by hoohaw
And also, and MUCH better than the auroras on today's Earth Science Picture of the Day -
http://epod.usra.edu/blog/
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 12:33 pm
by Ann
APOD wrote:
It is unclear where the rare
purple aurora originates
It looks quite
blue to me.
Congratulations on a very fine picture, Mia! It's so nice to see an APOD by a woman.
Ann
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 2:39 pm
by starsurfer
Well the EPOD image was taken from a place that normally doesn't experience aurorae.
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 2:40 pm
by geckzilla
I wasn't aware there was a competition between APOD and EPOD.
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 2:43 pm
by henrystar
Ann, over the years (now, many years!) I've seen the number of Astro colloquia presented by women increase dramatically, here at Johns Hopkins, and also at the Space Telescope Science Institute across the street. It is wonderful!
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 2:44 pm
by starsurfer
Ann wrote:APOD wrote:
It is unclear where the rare
purple aurora originates
It looks quite
blue to me.
Congratulations on a very fine picture, Mia! It's so nice to see an APOD by a woman.
Ann
You have a bias towards blue, you can't see the purple?!
There are very few female amateur astrophotographers, I know of
Kerry-Ann Lecky Hepburn and
Tanja Schmitz.
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 3:08 pm
by geckzilla
Here's another.
http://swagastro.weebly.com/
https://www.flickr.com/photos/swag72/
You could also count Astro Samantha who is a prolific photographer on board the ISS. Anyway, I'm sure there are many others. All the "famous" people tend to be men with the exception of entertainers.
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 4:34 pm
by AngryTheInch
Ann wrote:APOD wrote:
It is unclear where the rare
purple aurora originates
It looks quite
blue to me.
Congratulations on a very fine picture, Mia! It's so nice to see an APOD by a woman.
Ann
Thank you!
/Mia
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 4:35 pm
by Ron-Astro Pharmacist
And they are very good at bringing out the "art" in astrophotography. What's left is "
so photography" and I love it! Thanks Geck and your kind – the ladies of astronomy. And those guys too. There's enough talent to go " 'round" the world ".
Edit - I think I'll "second" my own adulation after going through Sara's flickr images such as "The Spider"
https://www.flickr.com/photos/swag72/12819544953/
http://apod.nasa.gov/apod/image/1001/IC417tsounis.jpg
Both quite nice though I would have liked to have found a
real spider (on her site) for comparison.
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Mon Mar 30, 2015 4:37 pm
by AngryTheInch
starsurfer wrote:Ann wrote:APOD wrote:
It is unclear where the rare
purple aurora originates
It looks quite
blue to me.
Congratulations on a very fine picture, Mia! It's so nice to see an APOD by a woman.
Ann
You have a bias towards blue, you can't see the purple?!
There are very few female amateur astrophotographers, I know of
Kerry-Ann Lecky Hepburn and
Tanja Schmitz.
There are quite a few female amateur astrophotographers actually
You'll find a lot of them on Twitter for example.
/Mia Stålnacke
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Tue Mar 31, 2015 1:42 am
by MarkBour
What a fantastic aurora shot! Of course one would think of a flag or curtain, but I'm also struck, for the first time ever on viewing an aurora photo, of the relationship to a rainbow! Although the source of the phenomenon is so totally different, one can definitely see a progression here from purple to red to green, and even at the bottom left, I see a touch of orange.
And here's a crazy question. Has anyone (okay, a group project, unless it's from space) ever observed auroras at both poles simultaneously? Is there any correlation? I would expect a positive correlation as a first guess, just in that we see more auroras when Sol is more active, and I don't see how that would strictly prefer on pole at a time.
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Wed Apr 01, 2015 10:25 am
by starsurfer
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Wed Apr 01, 2015 10:29 am
by starsurfer
AngryTheInch wrote:starsurfer wrote:APOD wrote:
It is unclear where the rare
purple aurora originates
You have a bias towards blue, you can't see the purple?!
There are very few female amateur astrophotographers, I know of
Kerry-Ann Lecky Hepburn and
Tanja Schmitz.
There are quite a few female amateur astrophotographers actually
You'll find a lot of them on Twitter for example.
/Mia Stålnacke
I'm not on any social networking websites, so I wouldn't know. One of my favourite astronomers is Williamina Fleming, discoverer of the
Horsehead Nebula and many other deep sky objects. I also admire Caroline Herschel for all her discoveries, my favourite of which is
NGC 225.
Re: APOD: A Flag Shaped Aurora over Sweden (2015 Mar 30)
Posted: Wed Apr 01, 2015 11:04 pm
by MarkBour
MarkBour wrote:... Has anyone (okay, a group project, unless it's from space) ever observed auroras at both poles simultaneously? Is there any correlation? ...
Here's a bit of an answer I found to my own question:
http://www.aurorasaurus.org/ .
Though currently, they seem focused on the Aurora Borealis, I'm hoping they'll become popular and expand to a world-wide view.