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: 2012/04/23 03:20 UT
Ejecta start time: 2012/04/23 17:00 UT
Ejecta end time: 2012/04/24 05:00 UT
dv= 60 km/s, v = 370 km/s, vmax = 390 km/s
Bmax (nT): 13
Dst: -120
Suggested source CME:
V_transit: - km/s

1.2.Comments
Overall ICME quality index: 3
ICME type: SH + EJ
ICME signatures: Increase in total magnetic field
increase in sw velocity
low plasma beta
low temperature than expected


Based on 390 km/s -> search window 144.000 hrs or 6.00000 days -> 2012/04/17 03:20:00.000

2. CME
2.1. A. Candidate A
A.1. LASCO:
#CME 2012/04/18 17:24 UT (from CDAW)
angle: 147, velocity: 581 km/s


A.2. STEREO:
Moderate CME in both COR2-A and COR2-B. Frontside moving CME.


A.3. AIA & GOES
Eruption from AR 11463 (~S27W30), associated with C5.3 class flare

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

2.1. B. Candidate B
B.1. LASCO:
#CME 2012/04/19 15:12 UT (from CDAW)
angle: 142, velocity: 540 km/s


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


B.3. AIA & GOES
Filament eruption (~S19E42), not associated with any major flare

B.4. Comment:

could be the source of disturbance


3. Other Comments
Multiple eruptions from AR 1463

4. Summary
SW index : 3
Source index: 2
Overall index: 3
Filament: N/A
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