Basic classification of NEMO Events
EUV Dimmings during Eruptions |
EIT waves |
|
|
|
dipolar |
|
Slow <V> = 130 km/s |
|
quadrupolar, etc |
|
Fast
<V> = 900
km/s |
|
free (corrupted) shape |
|
|
|
# class |
area |
intensity |
# class |
geometry |
solar condition |
1 |
Small |
High |
1 |
Assymmetrical/symmetrical
|
Freely propagating |
2 |
Large |
Weak |
2 |
Assymmetrical/symmetrical |
Interacting with ARs |
|
Dimmings as coronal magnetic field probe
Webb and Hudson, 2000; Attrill et al, 2006