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Titolo:
CO-ROTATING PARTICLE ENHANCEMENTS OUT OF THE ECLIPTIC-PLANE
Autore:
SIMNETT GM; SAYLE KA; TAPPIN SJ; ROELOF EC;
Indirizzi:
UNIV BIRMINGHAM,SCH PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND JOHNS HOPKINS UNIV,APPL PHYS LAB LAUREL MD 20723
Titolo Testata:
Space science reviews
fascicolo: 1-2, volume: 72, anno: 1995,
pagine: 327 - 330
SICI:
0038-6308(1995)72:1-2<327:CPEOOT>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Keywords:
HELIOSPHERE; ENERGETIC PARTICLES; CO-ROTATING INTERACTION REGIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
5
Recensione:
Indirizzi per estratti:
Citazione:
G.M. Simnett et al., "CO-ROTATING PARTICLE ENHANCEMENTS OUT OF THE ECLIPTIC-PLANE", Space science reviews, 72(1-2), 1995, pp. 327-330

Abstract

The characteristics of the recurrent electron (38-53 keV) and ion (>similar to 0.5 MeV) enhancements observed by Ulysses from mid-1992 to April 1994 are presented. The magnitude of the ion flux increases reached a maximum at a latitude of similar to 20 degrees S and decreased afterwards by similar to 23%/degree until early 1994. The magnitude of the electron increases showed a similar trend until May, 1993, after which time it became approximately constant, until it started to increase again in early 1994. The electron enhancements have lagged the protons by up to 5 days once Ulysses left the heliospheric current sheet (mid-1993). The electron spectral index tended to harden (a) during the decay of the event and (b) as the latitude increased, up to 50 degreesS. The events have recurred on a 26.0 day period, but with significant phase shifts over the 25 rotations studied. The H/He ratio decreasesacross the maximum intensity. The mean minimum value for H/He was 3.5+/-0.3, lower than that measured in previous studies in the ecliptic plane.

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Documento generato il 04/12/20 alle ore 20:51:57