The south-west limb event on 9 November 1991

qs102.watari05
Posted:   3-Feb-96
Updated: 18-May-96
Events specified: See text


S. Watari (Communications Research Lab.) Z. Smith, H.A. Garcia, T. Detman, and M. Dryer (NOAA/Space Environment Lab.)

Outlines : A spectacular change in the lower corona on the south-west limb was found in the soft X-ray images taken by the Yohkoh SXT. A CME was observed by the Mark III K-coronameter at the HAO/Mauna Loa Observatory. Both the MK3 and soft X-ray observations showed that one leg of this CME was located above the X1.1/1B flare site.

Update 18-May-96

We submitted a paper on this subject.

Journal : Solar Physics

Title    : CORONAL CHANGE AT THE SOUTH-WEST LIMB OBSERVED BY YOHKOH ON 9
           NOVEMBER, 1991 AND THE SUBSEQUENT INTERPLANETARY SHOCK
           AT PIONEER-VENUS-ORBITER

Authors  : S. Watari (Communications Research Laboratory)
           Z. Smith, H.A. Garcia, T. Detman, and M. Dryer
           (NOAA/Space Environment Center)

Abstract : A spectacular change in the lower corona on the south-west limb
           has been found in the solar images taken by the Yohkoh soft X-ray
           telescope. The event is characterized by a large topological
           change in magnetic field and a large intensity decrease observed
           after the X1.1/1B flare on 9 November, 1991. A coronal mass
           ejection (CME) was observed by the Mark III K-coronameter (MK3)
           at the HAO/Mauna Loa Observatory. Both the MK3 (white-light) and
           soft X-ray observations showed that one leg of this was located
           above the flare site. An interplanetary shock associated with this
           event was observed by Pioneer-Venus-Orbiter, and possibly,
           by IMP-8.