The Continuing Adventures Of Sunspot 798... |
The Continuing Adventures Of Sunspot 798... |
Sep 14 2005, 01:33 PM
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#1
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Junior Member Group: Members Posts: 48 Joined: 11-August 05 Member No.: 463 |
Sunspot 798 has unleashed yet another coronal mass ejection -- yesterday, Sept. 13. Spaceweather.com predicting a "severe geomagnetic storm" as a result, which might hit tonight or tomorrow.
The rundown on 'Spot 798: QUOTE This remarkable 'spot has produced nine X-flares since Sept. 7th including a record-setting X17-monster. All by itself, sunspot 798 has made Sept. 2005 the most active month on the sun since March 1991. Wow. You can still listen to audio (radio bursts) hosted at spaceweather.com. They're predicting aurorae in places as far south as southern California, Arizona and Texas (New Mexico always excluded...sheesh) if the incoming CME does wallop our magnetic field as strongly as predicted. SOHO movie of Sept. 13 CME Photo of 'Spot 798 taken by A. Friedman on Sept. 11: http://www.spaceweather.com/swpod2005/12sep05/friedman.jpg The caption to the photo was "Into the Maelstrom." I'd say that's apt. Terrific photo. |
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Sep 14 2005, 03:06 PM
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#2
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Member Group: Members Posts: 345 Joined: 2-May 05 Member No.: 372 |
And, of course, today is the first cloudy day in a week or so.
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Sep 14 2005, 03:24 PM
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#3
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Junior Member Group: Members Posts: 48 Joined: 11-August 05 Member No.: 463 |
QUOTE (um3k @ Sep 14 2005, 03:06 PM) *Sorry to know that's your current weather situation. Figures, huh? (It's always that way for me with occultations...) I live in a very sunny clime and will get my 'scope and solar screen out later today. Hopefully your weather situation will become more favorable ASAP. |
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Sep 14 2005, 05:16 PM
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#4
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Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
Too bad FUV WIC is never updated anymore.
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Sep 14 2005, 09:20 PM
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#5
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Member Group: Members Posts: 753 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
Check out the "live" auroracam at space.com - Aurora_cam
-------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
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Sep 14 2005, 10:19 PM
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#6
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Member Group: Members Posts: 477 Joined: 2-March 05 Member No.: 180 |
I guess I'll actually have to have a look outside every night now, since there's a big spat of solar activity suddenly. Pennsylvania isn't known for great amounts of auroras.
Cloudy right now unfortunately. First time in awhile - the remnants of Katrina passing over were the last sources of rain. I have yet to see any auroras in my lifetime. |
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Guest_Sunspot_* |
Sep 15 2005, 09:23 PM
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Guests |
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Sep 17 2005, 11:37 AM
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#8
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Junior Member Group: Members Posts: 48 Joined: 11-August 05 Member No.: 463 |
"Light bridges" across 'Spot 798
*Nice. Photo taken Sept. 14 by J. Grenier of France. Sunspot 798 currently Neptune-sized. QUOTE The bright gash splitting this sunspot down the middle is called a "light bridge." The bridge, explains solar physicist David Hathaway, separates positive and negative magnetic polarities in the spot. It's a sign of explosiveness, because opposite polarities bumping together can spark solar flares. 9 X-class flares since Sept. 7. Info and photo are hosted by spaceweather.com. Another example of "light bridges" on Sol, from Astropix archives. |
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Sep 20 2005, 03:21 PM
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#9
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Junior Member Group: Members Posts: 48 Joined: 11-August 05 Member No.: 463 |
Adios, Sunspot 798
*It's been a doozy. Is currently disappearing over Sol's western limb and also dissolving. QUOTE By the time the sun's 27-day rotation swings it back around to face Earth, sunspot 798 should have dispersed. There are no further chances of Earth-directed flares from the 'Spot. Thanks for the excitement. [The solar animation shows days of Sept. 7 through the 18th. Info and animation courtesy spaceweather.com] |
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Guest_Sunspot_* |
Sep 20 2005, 03:28 PM
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#10
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Guests |
And what a shame SOHO was in the middle of one of it's "CCD Bakeouts" It missed the whole show lol
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