Correlation between x-ray temporal variability and magnetic environment in solar flares

Conference · Wed Jan 01 00:00:00 EST 1992 · American Astronomical Society, Bulletin; (United States)

OSTI ID:6646051

Nitta, N; Harvey, K; Hudson, H; Ichimoto, K; Metcalf, T; Mickey, D; Sakai, J I; Sakao, T; Sakurai, T; Takahashi, M

The X-ray time history of a solar flare can reflect basic processes of heating and/or acceleration, which in turn may depend on the magnetic environment of the site. Some flares show a simple rise and fall temporal behavior, whereas others show more than one peak. Comparisons of images taken by the Soft X-ray Telescopy (SCT) aboard the Yohkoh spacecraft with ground-based magnetic data (Hawaii, Kitt Peak and Mitaka) reveal that, at least for a flare-productive active region (NOAA 7260), flares with double-peaked and single-peaked time profiles occurred at systematically different locations within the region. We discuss this result in terms of theoretical models, especially those of coalescence of two current loops.

• OSTI ID: 6646051
• Report Number(s): CONF-930189-; CODEN: AASBAR
• Journal Information: American Astronomical Society, Bulletin; (United States), Vol. 24:4; Conference: 181. meeting of the American Astronomical Society (AAS), Phoenix, AZ (United States), 3-7 Jan 1993; ISSN 0002-7537
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
SOLAR FLARES
MONITORING
X RADIATION
IMAGES
ACCELERATION
CORRELATIONS
EXPERIMENTAL DATA
HEATING
MAGNETIC FIELDS
SPACE VEHICLES
THEORETICAL DATA
DATA
ELECTROMAGNETIC RADIATION
INFORMATION
IONIZING RADIATIONS
NUMERICAL DATA
RADIATIONS
SOLAR ACTIVITY
VEHICLES
661320* - Auroral
Ionospheric
& Magnetospheric Phenomena- (1992-)
440100 - Radiation Instrumentation