Questions tagged [coronal-mass-ejection]
The coronal-mass-ejection tag has no usage guidance.
33
questions
0
votes
0
answers
12
views
Electromagnetic Profile for CME over time in the region of a geostationary satellite?
My specific question is what/how would the electromagnetic field profile be over time for a coronal mass ejection at the orbital radii for a typical geostationary orbit at around 35 000 km be?
The ...
1
vote
1
answer
92
views
Where do these materials on the Sun come from, if not nothingness?
In this video, I see that for hours, it seems that the flow keeps going from the 11h direction to the Sun's surface - while there looks like nothing is coming to the top of the loop to provide a ...
- 403
2
votes
1
answer
50
views
Could a sheet of plasma ejected from the sun's surface magnetically reconnect with itself and eject bits of itself which then also reconnect?
Could the Corona of the sun be getting heated by large sheets of plasma ejecting smaller sheets and these in turn ejecting smaller sheets ?
user50623
-2
votes
1
answer
209
views
What caused a huge piece of the Sun to break off?
There seems to be a huge piece of the sun that broke off at approximately 53 degrees. There's at least one article that describes it in these terms.
This, to me, seems to be a CME (Coronal Mass ...
user47732
6
votes
1
answer
477
views
Where do Coronal Mass Ejections go?
Due to magnetic fluctuations in the Sun's corona, the Sun produces Coronal Mass ejections (CMEs).
Where does the matter from these CMEs go if they don't hit any celestial object? Are they visible from ...
- 139
4
votes
1
answer
219
views
What does the surface of a star look like in visible light?
False colour images of the Sun show a highly complex structure near the surface with matter ejected and suspended in magnetic fields. But are solar prominences and coronal mass ejections visible to ...
- 141
1
vote
2
answers
285
views
how much advanced notice would we have for an Earth bound coronal mass ejection?
According to wikipedia the 1859 Carrington Event was caused by a coronal mass ejection (CME) of plasma.
As it's plasma and not photons it stands to reason that the CME would not be traveling at the ...
- 195
0
votes
0
answers
93
views
What happened to the predicted geomagnetic storm on 2021-10-31?
There was widespread media coverage in advance of of a predicted G3 storm on 2021-10-31 due to a CME. For instance, https://www.npr.org/2021/10/30/1050810514/northern-lights-halloween-2021:
A solar ...
- 101
2
votes
0
answers
137
views
Help finding a database or analysis of plage regions on the Sun
Plages are phenomena of stellar activity.
A plage is a bright region in the chromosphere of the Sun, typically found in and around active regions. The term itself is poetically taken from the French ...
- 311
6
votes
1
answer
59
views
What online tools are available to investigate and classify solar eruptions?
I was just casually browsing when I came across a link about at recent solar flare. So I went to investigate at SpaceWeather. There it was stated:
Looking further down the page it seem to say that ...
- 235
0
votes
1
answer
158
views
What would be the effects of a -400 nanotesla geomagnetic storm on modern electronics? [closed]
After reading the Wikipedia article on geomagnetic storms, I'm curious about what the effects of a -400-nanotesla-minimum geomagnetic storm would be on modern military and consumer electronics.
The ...
- 267
5
votes
1
answer
90
views
Strength of the relationship between very large solar flares, coronal mass ejections, and solar proton events?
In the years 774-775 and 993-994, there were large peaks in Earth's atmospheric radiocarbon (14C) concentration. While the cause was initially disputed, Mekhaldi et al.'s 2015 study of annually ...
- 151
5
votes
2
answers
192
views
Directionality of solar flares
I have read a number of articles about Coronal Mass Ejections (CME) and solar flares and I’m trying to establish how directional the radiation from them is.
I am aware that radiation from these solar ...
- 359
14
votes
3
answers
3k
views
How are the solar flares from May 23, 2021 extraordinary?
The Space Weather News for May 23, 2021 reads (with some highlighting by me)
Yesterday, the sun produced a sequence of solar flares unlike anything we've seen in years movie. Earth-orbiting ...
- 5,636
5
votes
1
answer
113
views
What is the lower limit of a coronal mass ejection?
Reading an 2005 article by Fraser Cain called Smallest Ever Coronal Mass Ejection
I became interested in the exact definition of CME.
It seems like a simple question - but I did not manage to find ...
- 5,636