Halo CME Mail

Date: Wed, 17 Jul 2002 09:32

From: Gareth Lawrence

Subject: Full Halo CME on 2002/07/16, backsided

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LASCO observed a very fast, bright full halo CME on 2002/07/16
A faint front was first seen in C2 in the SE at 16:02 UT; by
16:30 the C2 occultor was surrounded by a very bright front.
The front first appeared in C3 at 17:18 UT, with full coverage
of the the occulting disk.

EIT running difference movies clearly show substantial backsided
emission around a large part of the disk. Since frontsided activity
was minimal around this time this event has been determined
backsided.

Best wishes,
  GarethLawrence.

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| Gareth Lawrence,                   E-mail:grl@kreutz.nascom.nasa.gov |
| SOHO-LASCO Operations Scientist,                                     |
| CUA, Mail Code 682.3,                                                |
| NASA Goddard Space Flight Center,      Phone:  +1-301-286-2941       |
| Building 26, Room G-1,                         +1-301-286-3447       |
| Greenbelt, MD 20771.                   Fax:    +1-301-286-0264       |
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