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Titolo:
Preferred solar longitudes with signatures in the solar wind
Autore:
Ruzmaikin, A; Feynman, J; Neugebauer, M; Smith, EJ;
Indirizzi:
CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA CALTECH Pasadena CA USA 91109 LTECH, Jet Prop Lab, Pasadena, CA 91109 USA
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A5, volume: 106, anno: 2001,
pagine: 8363 - 8370
SICI:
0148-0227(20010501)106:A5<8363:PSLWSI>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-FIELD; ROTATION; DYNAMO; MODEL; SUN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Ruzmaikin, A CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA CALTECH 4800 Oak Grove Dr Pasadena CA USA 91109 CA 91109 USA
Citazione:
A. Ruzmaikin et al., "Preferred solar longitudes with signatures in the solar wind", J GEO R-S P, 106(A5), 2001, pp. 8363-8370

Abstract

Using spacecraft data collected over three solar cycles, Neugebauer et al.[2000] found a persistent dependence of the solar wind speed and the radial component of the interplanetary magnetic field on solar longitude, defined in a coordinate system with a rotation period of 27.03 days. Here we investigate the solar source of this period using observations of the photospheric magnetic field. We study the lowest-order nonaxisymmetric modes of the solar field extracted from synoptic charts of the Wilcox Solar Observatory. We find there is a robust magnetic structure on the Sun, which rotates with the period found by Neugebauer et al. [2000] in the solar wind. This rotation is more rapid than the solar equatorial and core rotations. We discussthe association of this nonaxisymmetric mode with the magnetic field generated by the solar mean field dynamo.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 12:07:53