Note on tracking Sun-Earth connection event

ICME Event: 2011/12/02

Observer: Eleni Nikou on 2019/06

1. ICME
  1.1. Catalog
     # Identified in ICME catalogs: Richardson & Can List
      RC catalog:
      Disturbance start time: 2011/12/02 17:17 UT
      Ejecta      Start time: 2011/12/02 18:00 UT
      Ejecta      End   time: 2011/12/03 07:00 UT
      dv = 0 km/s, v = 400 km/s, vmax= 420 km/s
      MC index:     1
      Dst:        -14 nT
      Suggested source CME: -
      V_transit: -
      
  1.2. Comments
      Overall ICME quality index: 1
      ICME signatures: Bmax: 8.3 nT
               ICME signatures: smooth v, smooth B by parts
      
      Disturbance time 400 km/s  -> search window 4-5 days -> 2011/11/28-29

2. CME
   2.1. A. Candidate A
    A.1. LASCO:    
      #CME 2011/11/28 06:36:05 UT, partial halo CME
           

    A.2 .STEREO: 
           Also seen as a CME in COR2-A and COR2 B (first frame at COR2-A 07:54 UT)
	   Front-side CME

    A.3. AIA & GOES
	   GOES and Solar Monitor don't have a flare around the time of the partial halo CME. Using observations in multiple wavelengths, we can see that there is a filament eruption on the nothern western hemisphere.

    A.4 Comment:  
	   Could be the source: The timing and orientation is in agreement with the observations


3. Other Comments

    CDAW gives a halo CME on 2011/11/27 at 14:00:05 UT, but this is a back-side event.

    There is one more partial halo CME on 2011/11/29 at 23:12:39 UT, but it is unlikely that this is the source because of the timing. It is almost 2.5 days before the beginning of the disturbance.

4. Summary
    SW index 1
    Source index 2
    Overall index 2