IPB

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
The Continuing Adventures Of Sunspot 798...
Palomar
post Sep 14 2005, 01:33 PM
Post #1


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.
Go to the top of the page
 
+Quote Post
um3k
post Sep 14 2005, 03:06 PM
Post #2


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. mad.gif
Go to the top of the page
 
+Quote Post
Palomar
post Sep 14 2005, 03:24 PM
Post #3


Junior Member
**

Group: Members
Posts: 48
Joined: 11-August 05
Member No.: 463



QUOTE (um3k @ Sep 14 2005, 03:06 PM)
And, of course, today is the first cloudy day in a week or so. mad.gif
*


*Sorry to know that's your current weather situation. sad.gif 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.
Go to the top of the page
 
+Quote Post
deglr6328
post Sep 14 2005, 05:16 PM
Post #4


Member
***

Group: Members
Posts: 356
Joined: 12-March 05
Member No.: 190



Too bad FUV WIC is never updated anymore.
Go to the top of the page
 
+Quote Post
ilbasso
post Sep 14 2005, 09:20 PM
Post #5


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
Go to the top of the page
 
+Quote Post
Jeff7
post Sep 14 2005, 10:19 PM
Post #6


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. smile.gif
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.
Go to the top of the page
 
+Quote Post
Guest_Sunspot_*
post Sep 15 2005, 09:23 PM
Post #7





Guests






Good article at science@NASA

http://science.nasa.gov/headlines/y2005/15...minexplodes.htm
Go to the top of the page
 
+Quote Post
Palomar
post Sep 17 2005, 11:37 AM
Post #8


Junior Member
**

Group: Members
Posts: 48
Joined: 11-August 05
Member No.: 463



"Light bridges" across 'Spot 798

*Nice. smile.gif 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.
Go to the top of the page
 
+Quote Post
Palomar
post Sep 20 2005, 03:21 PM
Post #9


Junior Member
**

Group: Members
Posts: 48
Joined: 11-August 05
Member No.: 463



Adios, Sunspot 798

*It's been a doozy. blink.gif

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. tongue.gif

[The solar animation shows days of Sept. 7 through the 18th. Info and animation courtesy spaceweather.com]
Go to the top of the page
 
+Quote Post
Guest_Sunspot_*
post Sep 20 2005, 03:28 PM
Post #10





Guests






And what a shame SOHO was in the middle of one of it's "CCD Bakeouts" It missed the whole show lol
Go to the top of the page
 
+Quote Post

Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 29th March 2024 - 04:43 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.