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: 2012/04/25 17:00 UT
Ejecta start time: 2012/04/26 00:00 UT
Ejecta end time: 2012/04/27 18:00 UT
dv= 70 km/s, v = 540 km/s, vmax = 710 km/s
Bmax (nT): 5
Dst: -57
Suggested source CME:
V_transit: - km/s

1.2.Comments
Overall ICME quality index: 3
ICME type: EJ
ICME signatures: smooth variation of magnetic field
smooth decrease of sw velocity


Based on 710 km/s -> search window 58.5289 hrs or 2.43871 days -> 2012/04/23 06:28:15.781

2. CME
2.1. A. Candidate A
A.1. LASCO:
#CME 2012/04/23 18:24 UT, Halo CME (from CDAW)
angle: 360, velocity: 528 km/s


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


A.3. AIA & GOES
Eruption from AR 11461 (~N14W17), associated with C2.0 class flare (onset 17:38)

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


2.1. B. Candidate B
B.1. LASCO:
#CME 2012/04/24 08:12 UT (from CDAW)
angle: 190, velocity: 443 km/s


B.2. STEREO:
Halo CME in COR2-A and a major CME in COR2-A FOV

B.3. AIA & GOES
East limb eruption

B.4. Comment:
less likely to be related to the disturbance due to the location of eruption


3. Other Comments

4. Summary
SW index : 3
Source index: 1
Overall index: 3
Filament:NA
WDA: Y


comment on CMEs within search window

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