Preliminary summary of the observations of the 16 February 1984 solar flare (STIP interval XV, 12-21 February 1984)

Technical Report · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6289136

Kane, S R; Urbarz, H W

The solar flare on 16 Feb. 1984 (0900 UT) and the associated photon and particle emissions were perhaps the most interesting solar and interplanetary phenomena during STIP Interval XV, 12 to 21 Feb. 1984. The x-ray and microwave radio emissions, as observed from the Earth, were relatively weak and no optical flare was reported. However, the hard x-ray and low energy gamma-ray observations made with the Pioneer Venus Orbiter spacecraft behind the west limb of the Sun indicate that the flare was, in reality, very intense. There is evidence that the flare was located approx 40 deg behind the west limb of the Sun and hence, for instruments located near the Earth, the most intense parts of the x-ray and microwave radio sources were occulted by the photosphere. However, the effect of occultation on the metric type II, type III, and type IV and decimetric (type DCIM) radio sources appeared to be relatively small. Following the flare, a large increase in the counting rates was recorded by several ground level neutron monitors and energetic particle detectors located in interplanetary space. A preliminary analysis of the 16 Feb. 1984 flare observations follows.

• Research Organization: California Univ., Berkeley (USA)
• OSTI ID: 6289136
• Report Number(s): N-87-23563; NASA-CR-180929; NAS-1.26:180929; TRN: 87-029302
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SOLAR FLARES
GAMMA SPECTRA
MICROWAVE SPECTRA
X-RAY SPECTRA
ECLIPSE
EXPERIMENTAL DATA
PHOTONS
PHOTOSPHERE
SOLAR ACTIVITY
SOLAR CORONA
SOLAR NEUTRONS
SOLAR RADIATION
ATMOSPHERES
BARYONS
DATA
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INFORMATION
MASSLESS PARTICLES
NEUTRONS
NUCLEONS
NUMERICAL DATA
RADIATIONS
SOLAR ATMOSPHERE
SOLAR PARTICLES
SPECTRA
STELLAR ATMOSPHERES
STELLAR CORONAE
STELLAR RADIATION
640104* - Astrophysics & Cosmology- Solar Phenomena