Incoming: SOHO observes a halo CME heading our way., page 1
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Topic started on 14-3-2010 @ 01:40 AM by pazcat
INCOMING: This morning, the Solar and Heliospheric Observatory recorded a halo CME emerging from the vicinity of sunspot 1054: movie. The cloud appears to be heading toward Earth and it could spark geomagnetic storms when it arrives on or about March 17th. High-latitude sky watchers should be alert for auroras.


spaceweather.com...



The sun is still putting on a show for us after SOHO has witnessed another CME.
And again this should make conditions good for creating auroras putting many sky watchers on alert.
I also imagine it will give plenty an opportunity to monitor the data that comes in from this as well.

CMEs aimed at Earth are called "halo events" because of the way they look in coronagraph images. As the expanding cloud of an Earth-directed CME looms larger and larger it appears to envelop the Sun, forming a halo around our star

spaceweather.com...
solarscience.msfc.nasa.gov...


[edit on 14-3-2010 by pazcat]


reply posted on 14-3-2010 @ 03:50 AM by Chadwickus
reply to post by Common Good



Have a look at the Space weather site that Pazcat linked to.

Down the left side you'll see some tables where it shows the forecasts for geomagnetic storms and flare activity.

the current 24 hour forecast is showing 10% chance of a class M flare and 5% for a minor storm.

More info on those tables here:

www.swpc.noaa.gov...

spaceweather.com...


reply posted on 14-3-2010 @ 04:18 AM by pazcat
reply to post by Chadwickus




Yep, there are plenty of links in that site as well like spaceweather now. These are likely to change a bit in the coming days.
It features geomagnetic storms, solar radiation storms and radio blackout activity.


reply posted on 14-3-2010 @ 05:31 AM by pazcat
reply to post by biblenet




Why does it take so long to get here? Well it is the light that is emitted from the sun that travels to us in 8 minutes, at the speed of light. Anything else the sun throws out such as particles and radiation travel at much slower speeds and therefor it can take days to reach us. Sometimes some effects can be noticed earlier though.

And yes, the path can be predicted/estimated of the CME and the Earth as well. I guess where it may hit is less known.
There is quite a bit of monitoring equipment to gather the data.

[edit on 14-3-2010 by pazcat]


reply posted on 14-3-2010 @ 08:07 AM by pazcat
reply to post by biblenet




Have a read of the wiki entry, it can probably give more information about CME's than i can, and more accurately too.
en.wikipedia.org...

@space cadet, sunspots are more likely the cause of the CME. I doubt the comets would of even made it to the sun. They would of been fried well before they could impact.



reply posted on 14-3-2010 @ 12:26 PM by pazcat
reply to post by Sky watcher



There is no evidence to suggest that though. And it was parts of a comet not an asteroid which means the make up of it is more ice and dust than much else.
It would not have had too much of an impact on the sun, the pieces would of been destroyed well before any impact could happen.

The most likely cause is sunspot 1054.


reply posted on 14-3-2010 @ 01:24 PM by moonzoo7
reply to post by biblenet



I just have an opinion to add. That stuff is moving pretty fast. I'm still in awe of anything traveling fast enough to make it from the sun to here in 3 days.

Good ol' Wikipedia says that CME's range in speed from 20 Km a second to 3,200 Km a second. The average speed of a CME is 489 Km a second


What's really amazing is that I needed four edits for five sentences......



[edit on 14-3-2010 by moonzoo7]

[edit on 14-3-2010 by moonzoo7]

[edit on 14-3-2010 by moonzoo7]

[edit on 14-3-2010 by moonzoo7]


reply posted on 14-3-2010 @ 01:40 PM by bluemooone2
Originally posted by moonzoo7
reply to
post by biblenet



I try not to do short posts, but I just have an opinion to add. That stuff is moving pretty fast. I'm still in awe of anything traveling fast enough to make from the sun to here in 3 days.

Good ol' Wikipedia says that CME's range in speed from 20 Km/ a second to 3,200 Km/ a second. The average speed of a CME is 489 Km/ a second


[edit on 14-3-2010 by moonzoo7]

[edit on 14-3-2010 by moonzoo7]
God , that is a HUGE difference in speed , and leaves me wondering what the odds are that we could be taken by surprise by a large CME reaching us in hours instead of days. Would we know here at ATS in advance? Even six hours of preparation could make a huge difference for survival chances.
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