Note on tracking Sun-Earth connection event

ICME Event: 2011/11/07

Observer: Eleni Nikou on 2019/06

1. ICME
  1.1. Catalog
     # Identified in ICME catalogs: Richardson & Can List
      RC catalog:
      Disturbance start time: 2011/11/07 15:00 UT
      Ejecta      Start time: 2011/11/07 17:00 UT
      Ejecta      End   time: 2011/11/07 23:00 UT
      dv = 20 km/s, v = 330 km/s, vmax= 350 km/s
      MC index:     2
      Dst:        -5 nT
      Suggested source CME: -
      V_transit: -
      
  1.2. Comments
      Overall ICME quality index: 3
      ICME signatures: Bmax: 9.9 nT
               ICME signatures: smooth B, low beta
      
      Disturbance time 330 km/s  -> search window 5 days -> 2011/11/01-02

2. CME
   2.1. A. Candidate A
    A.1. LASCO:    
      #CME 2011/11/01 08:48:05 UT, characterized as poor event by CDAW
           

    A.2 .STEREO: 
           Also seen as a CME in COR2-A and COR2 B (first frame at COR2-A 06:54 UT)
	   Front-side CME - slow event

    A.3. AIA & GOES  (not accurate, see comments)
	   corresponding flare:  1-Nov-2011 06:26 UT 
           class: C1.9 at AR11339, N17E52 (location given by Solar Monitor)
    
    A.4 Comment:  
	   Could be the source: The timing and orientation is in agreement with the observations


3. Other Comments

     There is no agreement on the number of the active region. GOES gives it as AR11339, while there is no AR11339 given by Jhelioviewer or Solar Monitor, they use AR11337 instead. The location of the active region does not make sense though. It is located on the western limb, but because of the location of the STEREO spacecraft, https://stereo-ssc.nascom.nasa.gov/cgi-bin/make_where_gif, the eruption should have been visible on STEREO-B first. At the time that we see the eruption on STEREO, we see dimmings at AR11334 and AR11335, as given by Jhelioviewer.

    The source region was not identified.


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