Kano's event list.

qs041.kano01
Posted:  01-Nov-92
Updated:
Events specified: See text


Evolution of Magnetic Structure Associated with Disappearance of Prominences

R. Kano, S. Tsuneta(Univ. of Tokyo),Y. Ogawara(ISAS), L. Acton(LPARL)

Motivation:
The SXT showes many examples of global changes of magnetic field
structure (restructuring) and its activation (heating).
These phenomena are sometimes associated with the disappearance of
H-alpha prominences. Thus, it is important to compare soft X-ray
images with H-alpha images to obtain global picture of
magnetic evolution. Because individual events are sometimes
very complex in X-ray images, we try to survey as many events
as possible to find the common physics.

Data and Method:
We surveyed prominence eruptions in BBSO H-alpha images from
October 19, 1991 through June 1, 1992 (about 30 events).
Then, we trace these phenomena by compering H-alpha images
and SXT-FFI images.

Prior to some events, the H-alpha prominence can be traced as dark
"lane" in the X-ray coronal structure. Then the appearance of a bright
thin long "line" along the H-alpha prominence is followed by the
formation of arcades of "loops" or cusps.

The good example is the event that occurred on February 21, 1992.
A long bright line as thin as one SXT half resolution pixel
(about 5 arcsec) appeared in the X-ray image nearly the location
of H-alpha prominence. The length of the X-ray thin line is about
100 arcsec, and the aspect ratio is about 20.

<<Events List>>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Date  Time  Place  Rank  Evolution
                            Lane > Line > Loop
1991
  10/21 08-21 NE                    ?      C           C:Cusp
  10/21 21-03 W              X      ?      A           A:Arcade
  10/24 20-06 C              O     -----------
  11/ 5 23-   S      0000   ------------------
  11/23 18-05 N      00      X      X      ?
  12/10 05-   S      ?????   O      ?      A?
  12/19 00-   N      000    ------------------
  12/19 09-   W      0      ------------------
  12/26 20-   SW     0000   ------------------
1992
   1/18 20-   N      00     ------------------
   1/19 18-   S      000    ------------------
   2/ 3 08-   C      000     O      O      O
   2/21 04-09 SE     0000    O      O      CA   <--Good example
   2/21 22-08 W      00000   X      ?      A
   2/27 04-09 SE     000     X      O      X
   3/12 00-04 S      0000    ?      O      C?
   3/14 16-21 NE     0000    ?      O      CA   <--Good example
   3/28 23-05 S      000     X      O      C
   3/29 05-09 NW     000     X      X      A
   4/24 05-   S      000    ------------------
   4/28 21-02 E      0000    X      O      A
   5/ 7 05-11 SE     00000   X      ?      A
   5/ 8 22-03 SE     0000    ?      X      CA
   5/10 13-17 N      0       X      X      O
   5/19 07-10 NE     00      X      O      A
   5/22 18-20 E      000     X      ?      A
   6/ 1 12-17 C      0000    O      O      A
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~