NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The morphology of 20 x 10 exp 6 K plasma in large non-impulsive solar flaresWe have examined images of 10 flares observed by the Soft X-ray Telescope on-board the Yohkoh spacecraft. These images show that the hottest portion of the soft X-ray flare is located in compact regions that appear to be situated at the tops of loops. These compact regions form at, or shortly after, flare onset, and persist well into the decay phase of the flares. In some cases, the compact regions are only a few thousand kilometers in size and are small compared to the lengths of flaring loops. This is inconsistent with the smoother intensity distribution along the loops expected from models of chromospheric evaporation.
Document ID
19930036484
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Acton, Loren W.
(Lockheed Research Labs. Palo Alto, CA, United States)
Feldman, Uri
(U.S. Navy, Naval Research Lab. Washington, United States)
Bruner, Marilyn E.
(Lockheed Research Labs. Palo Alto, CA, United States)
Doschek, George A.
(U.S. Navy, Naval Research Lab. Washington, United States)
Hirayama, Tadashi
(National Astronomical Observatory Mitaka, Japan)
Hudson, Hugh S.
(Hawaii Univ. Honolulu, United States)
Lemen, James R.
(Lockheed Research Labs. Palo Alto, CA, United States)
Ogawara, Yoshiaki
(Inst. of Space and Astronautical Science Sagamihara, Japan)
Strong, Keith T.
(Lockheed Research Labs. Palo Alto, CA, United States)
Tsuneta, Saku
(Tokyo Univ. Mitaka, Japan)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: PASJ: Publications of the Astronomical Society of Japan
Volume: 44
Issue: 5
ISSN: 0004-6264
Subject Category
Solar Physics
Accession Number
93A20481
Funding Number(s)
CONTRACT_GRANT: NAS8-37334
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available