Fast Solar Wind Sparks G1 Solar Storm and Aurora

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Carbon60
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Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Carbon60 » Sun Dec 07, 2014 8:59 am

Hi all,

Earth has just passed through a fast flowing solar wind stream (800km/s) originating from a large coronal hole in the Heliogeographic south. The intensity and southerly magnetic orientation of this flow of protons, electrons and alpha particles sparked a G1 Solar storm here on Earth, resulting in beautiful aurora in high-mid latitude areas.

The storm was captured on my magnetometers, shown here.
20141207_G1 storm.jpg
20141207_G1 storm.jpg (164.64 KiB) Viewed 1819 times
Luckily I had just managed to get my system up and running again the day before, following a minor technical hitch.

Thanks for looking.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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swisswalter
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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by swisswalter » Mon Dec 08, 2014 4:19 am

Hi Stuart

fantastic report, thanks for sharing. I love your plots
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Carbon60 » Mon Dec 08, 2014 7:18 am

Much appreciated, Walter.

Stu
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Montana
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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Montana » Mon Dec 08, 2014 10:30 am

:hamster: :hamster: :hamster: great news and a great plot :)

I was asleep during that storm though ;)

Alexandra

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Derek Klepp » Mon Dec 08, 2014 11:10 am

Thanks Stu

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by highfnum » Mon Dec 08, 2014 4:18 pm

cool

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by marktownley » Mon Dec 08, 2014 5:23 pm

Impressive stuff!
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Carbon60 » Mon Dec 08, 2014 10:29 pm

Thanks everyone.

I've extended the plot to include some additional geomagnetic disturbances occurring yesterday and today from the same coronal hole.
20141208_G1 storm.jpg
20141208_G1 storm_rate of change.jpg
20141208_G1 storm_rate of change.jpg (165.11 KiB) Viewed 1777 times

Cheers

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by grimble_cornet » Mon Dec 08, 2014 10:51 pm

An amazing presentation Stu - that is one cool bit of kit :seesaw
.

.



.


Mike Garbett

Selection of Solar and Deep Sky images on Flickr: https://www.flickr.com/photos/mikegarbett/

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by swisswalter » Tue Dec 09, 2014 5:13 am

Hi Stuart

what a fine extension of that report
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by marktownley » Tue Dec 09, 2014 6:30 am

I like it alot!
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Montana » Tue Dec 09, 2014 10:11 am

Are these disturbances big enough to see aurora where you are? if not, how big does the disturbance have to be (on the plot)?

Many thanks
Alexandra

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Carbon60 » Wed Dec 10, 2014 7:23 am

Many thanks for your supportive comments, everyone.

Alexandra, with interplanetary Kp-index 5 or more it might be possible to see Aurora over mid UK. It really depends on the local conditions and time of year given the oval shape of the auroral zone and our position relative to it. According to NOAA the recent activity was classed as G1 with a Kp index of 4-5, so this is borderline.

A more complete explanation of the Kp-index scale, you might like to check out http://www.spaceweather.com/glossary/kp.html

On my chart I think above about 50 units (approximately 50nT) is a good indicator of a storm with possible viewing opportunities from my location, but I never seem to get good enough sky conditions.

Cheers

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Montana » Wed Dec 10, 2014 10:02 am

Thanks Stu :) is that 50 units including the negative scale? or does it need to reach the 50 line?

Alexandra

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Carbon60 » Wed Dec 10, 2014 8:00 pm

Hi Alexandra,

+50 from the zero axis, but this is not hard and fast.....I don't really have enough data/experience to say for sure and as I say, there are other variables to take into account.

I understand that there was a lovely display over large parts of the UK last night with Kp reported as 4!

Cheers

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Re: Fast Solar Wind Sparks G1 Solar Storm and Aurora

Post by Montana » Thu Dec 11, 2014 9:56 am

Really! pity! it was horizontal rain and a howling gale ;)

Alexandra

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