A direct observation of solar neutrons following the 0118 UT flare on 1980 June 21

A direct observation of solar neutrons following the 0118 UT flare on 1980 June 21

Energetic solar neutrons (>50 MeV) have been detected at the Earth following a solar flare which occurred on the west limb on 1980 June 21 at 01:18:20 UT. Impulsive photon emission from 10 keV to greater than 65 MeV lasting over a period of approx.66 s was followed by a transient flux of approx.5...

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Veröffentlicht in:Astrophys. J., Lett. Ed.; (United States) Lett. Ed.; (United States), 1982-12, Vol.263, p.L95
Hauptverfasser: Chupp, E. L., Forrest, D. J., Ryan, J. M., Heslin, J., Reppin, C., Pinkau, K., Kanbach, G., Rieger, E., Share, G. H.
Format: Artikel
Sprache:eng
Schlagworte:
640104 - Astrophysics & Cosmology- Solar Phenomena
ACCELERATION
BARYONS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ELEMENTARY PARTICLES
FERMIONS
GAMMA SPECTRA
HADRONS
NEUTRONS
NUCLEONS
PLASMA ACCELERATION
PROTONS
RADIATIONS
SOLAR ACTIVITY
SOLAR FLARES
SOLAR NEUTRONS
SOLAR PARTICLES
SOLAR PROTONS
SOLAR RADIATION
SPECTRA
STELLAR RADIATION
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Zusammenfassung:Energetic solar neutrons (>50 MeV) have been detected at the Earth following a solar flare which occurred on the west limb on 1980 June 21 at 01:18:20 UT. Impulsive photon emission from 10 keV to greater than 65 MeV lasting over a period of approx.66 s was followed by a transient flux of approx.50-600 MeV neutrons incident over a approx.17 minute period. The peak counting rate corresponds to an average flux at the Earth of (3.8 +- 0.6) x 10/sup -2/ neutrons cm/sup -2/s/sup -1/ at approx.130 MeV. These observations indicate the emission of approx.3 x 10/sup 28/ neutrons sr/sup -1/ with energies > or approx. =50 MeV requiring the rapid acceleration (
ISSN:0004-637X
1538-4357
DOI:10.1086/183931