OBSERVATIONS OF CME SIGNATURES IN EUV

1
OBSERVATIONS OF CME SIGNATURES IN EUV
SOLI INVICTO

• Andrei Zhukov

Solar Influences Data analysis Center, Royal
Observatory of Belgium Skobeltsyn Institute of
Nuclear Physics, Moscow State University, Russia
2
CME SIGNATURES IN EUV
Dimmings (including TCHs)
Post-eruption arcade
EIT wave
Limb signatures opening of loops, plasmoid
lifting etc.
Erupting prominence (filament)
SOHO/EIT 195 Å
3
CME SIGNATURES IN EUV
Dimmings (including TCHs)
Post-eruption arcade
EIT wave
Limb signatures opening of loops, plasmoid
lifting etc.
Erupting prominence (filament)
4
CME SIGNATURES IN EUV
Using the CME Watch data series in any of the
four EIT bandpasses, we are capable to identify
reliably the source regions of almost 60 of the
catalogued LASCO CMEs. The remaining 40 are
probably backsided.
AIA will observe the initiation of nearly all
the frontside CMEs
5
CMES WITH SOURCE REGION CLOSE TO THE DISC CENTER
6
CMES WITH SOURCE REGION CLOSE TO THE DISC CENTER
7
CMES WITH SOURCE REGION CLOSE TO THE DISC CENTER
8
Not observed by EIT
Erupting filament Post-eruption
arcade Dimmings
9
Not observed by EIT
Erupting filament Full halo CME Dimmings
QUESTION can AIA determine the direction of a
CME eruption?
Only a shock arrived
Arrived to the Earth
Arrived to the Earth
10
AUTOMATIC EXPOSURE CONTROL!?
11
AUTOMATIC EXPOSURE CONTROL!?
AEC is detrimental for observations of weak
phenomena like dimmings and EIT waves!
12
OBSERVATIONS OF EIT WAVESIN DIFFERENT BANDPASSES
195 Å 171 Å 284 Å
304 Å (?)
The association with waves observed in Ha, He I,
SXR, radio (17 GHz) is still unclear.
QUESTION Are all these waves the same
phenomenon? AIA unique temperature coverage may
give the answer.
13
ARE EIT WAVES REALLY WAVES?
14
BIMODALITY OF EIT WAVES
SOHO/EIT Fe XII bandpass (195 Å) 1.5 MK plasma
(May 21 22, 2002)
(Zhukov Auchère 2004)
15
BIMODALITY OF EIT WAVES
SOHO/EIT Fe XII bandpass (195 Å) 1.5 MK plasma
Running difference movie
(May 21 22, 2002)
16
BIMODALITY OF EIT WAVES
17
BIMODALITY OF EIT WAVES
18
BIMODALITY OF EIT WAVES
SOHO/EIT Fe XII bandpass (195 Å) 1.5 MK plasma
(May 27, 2000)
(Zhukov Auchère 2004)
19
BIMODALITY OF EIT WAVES
TOP row running difference images BOTTOM row
base difference images
(May 27, 2000)
(Zhukov Auchère 2004)
AIA will provide us with high temporal resolution
observations of EIT wave evolution
20
TOWARDS A COHERENT PHYSICAL PICTURE
(Chen Fang 2005)
(Priest 1988)
21
EIT WAVES IN 1997 AND 2005
22
EIT WAVES IN 1997 AND 2005
23
EIT WAVES IN 1997 AND 2005
24
EIT WAVES IN 1997 AND 2005
(Courtesy N. Nitta)
25
HEATING OF FILAMENTS AND PROMINENCES DURING
ERUPTION
QUESTION Why and how is the prominence matter
heated during its eruption? AIA will observe this
process in several bandpasses.
26
GLOBAL CMES?
27
GLOBAL CMES?
28
(No Transcript)
29
(No Transcript)
30
MORE OPEN QUESTIONS TO BE ADDRESSED BY AIA

• Close temporal correspondence of flare SXR
  profile and CME rising curve (relationship
  between CMEs and flares) (AIA
  high temporal resolution simultaneous
  observations in several bandpasses)
• What is lifted off first prominence or overlying
  arcade? (AIA high temporal resolution)

31
AIA CME-RELATED DATA PRODUCTS

• Lists of dimmings, EIT waves,
  filament eruptions,
  prominence eruptions, post-eruption
  arcades.
• Catalogs of EUV CMEs

32
OVERALL STATISTICS
195 Å 171 Å 284 Å 304 Å (2000) 304 Å (2003)
Dimmings 256? 162? 111? 21? 11
EIT wave 12? 12? 23? 0 01?
Prominence/Filament 61? 51? 41? 8 145?
Arcade 113? 33? 81? 11? 32?
Limb 162? 142? 81? 01? 5
None 24 14 3 11 10
Total CMEs 57 34 15 20 35