Note on tracking Sun-Earth connection event

ICME Event: 2011/10/05

Observer: Eleni Nikou on 2019/06

1. ICME
  1.1. Catalog
     # Identified in ICME catalogs: Richardson & Can List
      RC catalog:
      Disturbance start time: 2011/10/05 07:36 UT
      Ejecta      Start time: 2011/10/05 10:00 UT
      Ejecta      End   time: 2011/10/05 22:00 UT
      dv = 90 km/s, v = 450 km/s, vmax= 460 km/s
      MC index:     1
      Dst:        -43 nT
      Suggested source CME: 2011/10/02 01:00 UT
      V_transit:  530 km/s
      
  1.2. Comments
      Overall ICME quality index: 3
      ICME signatures: Bmax: 13.2 nT
               ICME signatures: Tp<Texp
      
      Disturbance time 450 km/s  -> search window 3-4 days -> 2011/10/01

2. CME
   2.1. A. Candidate A
    A.1. LASCO:    
      #CME 2011/10/01 09:36 UT, parial halo CME
           

    A.2 .STEREO: 
           Also seen as a CME in COR2-A and COR2 B (first frame at COR2-A 10:24 UT)
	   Front-side CME

    A.3. AIA & GOES        
	   corresponding flare: 1-Oct-2011 08:56 UT
           class: M1.2 from AR11305 at N10W06

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

           Small dimming area + interconnecting loops with the neighboring active regions.
   
3. Other Comments

     CDAW gives a partial halo on 2011/10/01 at	01:25:54 UT, but it is a back-side CME.	

4. Summary
    SW index 3
    Source index 2
    Overall index 3