Return to the Cloudy Nights Telescope Reviews home page


Observing >> Solar Observing and Imaging

Pages: 1 | 2 | (show all)
ValeryD
Vendor (Aries)
*****

Reged: 11/26/05

Loc: Kherson, Ukraine.
Re: Absolutely incredible event on the sun's surface ! new [Re: SpaceConqueror3]
      #6110486 - 10/01/13 01:39 AM

Excellent work! Thanks, Andre!

Post Extras: Print Post   Remind Me!   Notify Moderator  
David Knisely
Postmaster
*****

Reged: 04/19/04

Loc: southeastern Nebraska
Re: Absolutely incredible event on the sun's surface ! new [Re: Andrev]
      #6110498 - 10/01/13 01:52 AM

Quote:

David.

Me too and how come it disappeared in a so violent way. Its like an explosion. Did you pay attention to the smaller filament vortex caused by the shock wave ? What a powerful energy. Any planet would have been destroyed in second with a such energy.

More I watch it, more I find it incredible... ! So much details captured. Thanks GONG.

Andre.




It isn't really an explosion. It is a type of filament event known as a "disparition brusque" (sudden vanishing), and occurs when a large filament breaks its anchor points and floats upwards and away from the sun, slowly breaking up in the process. Filaments are "magnetically buoyant", like a child's helium filled balloon. They are held down in the sun's overall diverging magnetic field by localized magnetic "footpoints" near the surface. Once these footpoints change or decay (or the filament grows to a height of at least 50,000 km above the surface), the filament can break loose from the sun and float up and away, usually breaking up and vanishing. This kind of event can also occasionally produce a coronal mass ejection. With this sudden change in local surface magnetic fields that occurred as the filament broke away, small areas of plage can briefly appear on either side of the area near the surface beneath where the filament once was (the former "Filament channel"), which was seen after the filament had broken loose and gotten pretty close to vanishing. Occasionally, another filament will occasionally re-form in a location similar to that of the previously disrupted filament, so the area might be worth watching for another day or two. Clear skies to you.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Andrev
Post Laureate
*****

Reged: 02/08/11

Loc: Montreal, Quebec, Canada
Re: Absolutely incredible event on the sun's surface ! new [Re: David Knisely]
      #6110668 - 10/01/13 07:18 AM

David, I said its like an explosion shock wave effect, I know its not an explosion.

Andre


Post Extras: Print Post   Remind Me!   Notify Moderator  
David Knisely
Postmaster
*****

Reged: 04/19/04

Loc: southeastern Nebraska
Re: Absolutely incredible event on the sun's surface ! new [Re: Andrev]
      #6110756 - 10/01/13 08:50 AM

Quote:

David, I said its like an explosion shock wave effect, I know its not an explosion.

Andre




As solar events go, it was very impressive visually, but the energy released actually wasn't all that high. Indeed, the X-ray emission following the filament's departure barely hit a C-level. Seeing one this big go is maybe slightly rare, but it isn't terribly uncommon. It is nice to get to see the CME from the filament's disappearance go up so high, and it will be interesting to see if the geometry of the CME would make the material from the event encounter Earth's magnetic field in the next couple of days. So far, the SEC hasn't said much about the event's potential impact, although the proton flux is up somewhat. Clear skies to you.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Chuck Hards
Post Laureate
*****

Reged: 05/03/10

Loc: The Great Basin
Re: Absolutely incredible event on the sun's surface ! new [Re: steveward53]
      #6110827 - 10/01/13 09:30 AM

Quote:

Maybe this will bring on a soiling then ...






That almost did it! Thanks!


Post Extras: Print Post   Remind Me!   Notify Moderator  
REC
Post Laureate
*****

Reged: 10/20/10

Loc: NC
Re: Absolutely incredible event on the sun's surface ! new [Re: Andrev]
      #6110908 - 10/01/13 10:19 AM

Wow, thank you so much for sharing that. I had seen that large filament the other day and when it wasn't there yesterday, I just figured it had rotated to the other side of the Sun!

Bob


Post Extras: Print Post   Remind Me!   Notify Moderator  
sullij1
Carpal Tunnel


Reged: 11/08/08

Re: Absolutely incredible event on the sun's surface ! new [Re: REC]
      #6111387 - 10/01/13 02:57 PM

oo00oo - Ahhhh! Thanks for the post!

Post Extras: Print Post   Remind Me!   Notify Moderator  
David Knisely
Postmaster
*****

Reged: 04/19/04

Loc: southeastern Nebraska
Re: Absolutely incredible event on the sun's surface ! new [Re: David Knisely]
      #6114518 - 10/03/13 02:55 AM

Looks like that disparition brusque eruption did manage to get us an Earthward-bound CME. We had a nice Aurora late Tuesday evening which we saw while observing here in southeastern Nebraska. Nice to see such a "quiet" event put on a nice show, both on the sun and in the Earth's upper atmosphere. Clear skies to you.

Post Extras: Print Post   Remind Me!   Notify Moderator  
rockethead26
Post Laureate
*****

Reged: 10/21/09

Loc: Arizona, USA
Re: Absolutely incredible event on the sun's surface ! new [Re: David Knisely]
      #6115705 - 10/03/13 05:21 PM

Very, very cool...

Post Extras: Print Post   Remind Me!   Notify Moderator  
raylal
Carpal Tunnel


Reged: 04/19/10

Loc: Cornwall, Ont., Canada
Re: Absolutely incredible event on the sun's surface ! new [Re: rockethead26]
      #6116869 - 10/04/13 09:49 AM

WOW !!!!!

Ray


Post Extras: Print Post   Remind Me!   Notify Moderator  
BRCoz
professor emeritus
*****

Reged: 10/21/05

Loc: Moreno Valley, CA
Re: Absolutely incredible event on the sun's surface ! new [Re: raylal]
      #6118037 - 10/04/13 09:35 PM

All I can say is WOW. I looked at that filament last Sunday.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | (show all)


Extra information
5 registered and 12 anonymous users are browsing this forum.

Moderator:  Scott in NC, Phillip Creed 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 1095

Jump to

CN Forums Home




Cloudy Nights Sponsor: Astronomics