Energetic protons from a disappearing solar filament

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:6060424

Kahler, S W; Cliver, E W; Cane, R E; McGuire, H V; Stone, R G

A solar energetic (E> 50MeV) particle (SEP) event observed at 1 AU began about 1500 UT on 1981 December 5. This event was associated with a fast coronal mass ejection observed with the Solwind coronagraph on the P78-1 satellite. No metric type II or type IV burst was observed, but a weak interplanetary type II burst was observed with the low-frequency radio experimentation ISEE-3 satellite. The mass ejection was associated with the eruption of a large solar quiescent filament that lay well away from any active regions. The eruption resulted in a H-alpha double-ribbon structure which straddled the magnetic inversion line. No impulsive phase was obvious in either the H-alpha or the microwave observations. The event indicates that neither a detectable impulsive phase nor a strong or complex magnetic field is necessary for the production of energetic ions.

• Research Organization: Emmanuel Coll., Boston, MA (USA)
• OSTI ID: 6060424
• Report Number(s): AD-A-162425/3/XAB
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERES
BARYONS
CHARGED PARTICLES
DETECTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
HADRONS
IONS
MAGNETIC FIELDS
MASS
NUCLEONS
PRODUCTION
PROTONS
RADIATIONS
RADIOWAVE RADIATION
SOLAR ACTIVITY
SOLAR CORONA
SOLAR FLARES
SOLAR PARTICLES
SOLAR PROTONS
SOLAR RADIATION
SOLAR RADIO BURSTS
STELLAR ATMOSPHERES
STELLAR CORONAE
STELLAR RADIATION