Note on tracking Sun-Earth connection event

Observer: SD

ICME

1.1.Catalog
# Identified in ICME catalogs: Richardson & Cane List
RC Catalog
Disturbance start time: 2012/09/04 22:45 UT
Ejecta start time: 2012/09/05 06:00 UT
Ejecta end time: 2012/09/05 18:00 UT
dv= 40 km/s, v = 500 km/s, vmax = 540 km/s
Bmax (nT): 10
Dst: -64
Suggested source CME:
V_transit: - km/s

1.2.Comments
Overall ICME quality index: 2
SW type: SH+EJ
ICME signatures: jump in magnetic field
jump in sw velocity
high charge state



Based on 540 km/s -> search window 76.9547 hrs or 3.20645 days -> 2012/09/01 17:47:42.938

2. CME
2.1. A. Candidate A
A.1. LASCO:
#CME 2012/09/02 04:00 UT, Halo CME (from CDAW)
angle: 360, velocity: 538 km/s


A.2. STEREO:
Major CME in both COR2-A and COR2-B, front side moving CME


A.3. AIA & GOES
Eruption from AR 11560, not associated with any major flare

A.4. Comment:
Likely the source of disturbance.

2.1. B. Candidate B
B.1. LASCO:
#CME 2012/09/01 19:00 UT (from CDAW)
angle: 86, velocity: 191 km/s


B.2. STEREO:
Moderate CME in both COR2-A and COR2-B in FOV, front side moving CME


B.3. AIA & GOES
Filament eruption from (N15W02), not associated with any major flare

B.4. Comment:
Could be the source of disturbance.


2.1. C. Candidate C
C.1. LASCO:
#CME 2012/09/02 09:36 UT (from CDAW)
angle: 173, velocity: 404 km/s


C.2. STEREO:
Major CME in both COR2-A and COR2-B, front side moving CME


C.3. AIA & GOES
Eruption from AR 11560, not associated with any major flare

C.4. Comment:
Though the speed of the CME is lower than the earlier CME, it could interact with earlier CME


3. Other Comments
the disturbance could be due to the interaction of multiple CMEs.

4. Summary
SW index : 2
Source index: 2
Overall index: 2

comment on CMEs within search window

Curators: Jie Zhang (jzhang7 AT gmu.edu); Suman Dhakal (sdhakal2 AT masonlive.gmu.edu);
Last updated: 2022/01