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 stargazer1000
Joined: 1/16/2008
Msg: 1
Comets and the sunPage 1 of 1    
Spaceweather.com has an interesting piece today about a possible link between coronal mass ejections and impacting comets.

Understand - this is not a definitive thing. However, for the second time in a short while, the Solar and Heliospheric Observatory (SOHO) observed this: http://www.spaceweather.com/images2011/03oct11/cometandcme.gif?PHPSESSID=9b8ml3h552k2ierjg4skoi2qq7

Kreutz sungrazing comets are destroyed by the sun on a regular basis. However, there seems to be a possibility that some comets carry enough of a wallop that they can cause a cascade effect that launches a coronal mass ejection.

It's going to be interesting, now that they're looking for it, to see if they do find a connection. Either that or we've been able to see a remarkable coincidence in action - two comets impacting the sun's inner corona and a CME launched at the same time!

Gotta love this stuff!!!!
 stargazer1000
Joined: 1/16/2008
Msg: 2
Comets and the sun
Posted: 10/3/2011 11:31:32 AM

can someone please explain what the other object is moving what looks like away from the sun ?


That's Mercury. The two "lines" on either side of it are actually something called "blooming" that occurs with CCD chips when it images a bright object.
 swingarm1966
Joined: 3/27/2011
Msg: 3
Comets and the sun
Posted: 10/3/2011 4:39:41 PM
Comet smashes into the sun; massive explosion ensues (VIDEO)
http://www.wjla.com/blogs/weather/2011/10/comet-smashes-into-the-sun-massive-explosion-ensues-video--13044.html

here is a near miss with ejection

http://www.youtube.com/watch?v=qsF3BrigQFM&NR=1

here is a near miss with no ejection (note the apparent size relative to the sun)

http://www.youtube.com/watch?v=_ptgM7XbuEo&feature=related

 swingarm1966
Joined: 3/27/2011
Msg: 4
Comets and the sun
Posted: 10/3/2011 6:16:47 PM
another with ejection
http://www.youtube.com/watch?v=xAETdqWf7AE&feature=related
 stargazer1000
Joined: 1/16/2008
Msg: 5
Comets and the sun
Posted: 10/3/2011 8:45:27 PM

another with ejection


There is a possibility that there is at least a couple of instances of correlation not necessarily equaling. After all, Kreutz sungrazers have been spotted numerous times disppearing into the glare of the sun without a subsequent CME.

It's a question of having a verifiable and observable mechanism that would link comet impacts to the solar corona with CMEs. That could be challenging, to say the least.
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