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Titolo:
DIFFERENCES BETWEEN THE 0.35-1.0 MEV NUCLEON H/HE RATIO IN SOLAR AND CO-ROTATING EVENTS AT HIGH HELIOLATITUDE/
Autore:
SIMNETT GM; SAYLE KA; ROELOF EC;
Indirizzi:
UNIV BIRMINGHAM,DEPT PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND JOHNS HOPKINS UNIV,APPL PHYS LAB LAUREL MD 20723
Titolo Testata:
Geophysical research letters
fascicolo: 23, volume: 22, anno: 1995,
pagine: 3365 - 3368
SICI:
0094-8276(1995)22:23<3365:DBT0MN>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERPLANETARY ACCELERATION; NUCLEONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
G.M. Simnett et al., "DIFFERENCES BETWEEN THE 0.35-1.0 MEV NUCLEON H/HE RATIO IN SOLAR AND CO-ROTATING EVENTS AT HIGH HELIOLATITUDE/", Geophysical research letters, 22(23), 1995, pp. 3365-3368

Abstract

We discuss measurements from the Ulysses spacecraft of the 0.35 - 1.0MeV/nucleon H/He intensity ratio at high heliolatitudes. In early 1994 two transient solar events were detected in the gaps between particle intensity increases associated with the passage at low latitude of aco-rotating interaction region. The H/He ratio was greater than or similar to one order-of-magnitude lower in the co-rotating events than in the transient solar events. Several similar instances, but not so cleanly separated, were observed from mid-1992 to the end of 1993. We interpret the lower H/He ratio in recurrent events as the result of efficient acceleration of interstellar pickup He+ at corotating reverse shocks to which Ulysses remains connected even at high heliolatitudes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 19:40:56