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Titolo:
Multiple CME events observed with LASCO
Autore:
Lyons, MA; Simnett, GM;
Indirizzi:
Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT W Midlands, England
Titolo Testata:
SOLAR PHYSICS
fascicolo: 1, volume: 186, anno: 1999,
pagine: 363 - 379
SICI:
0038-0938(199905)186:1<363:MCEOWL>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORONAL MASS EJECTIONS; TELESCOPE; MISSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Lyons, MA Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT , England
Citazione:
M.A. Lyons e G.M. Simnett, "Multiple CME events observed with LASCO", SOLAR PHYS, 186(1), 1999, pp. 363-379

Abstract

Observations are reported of two multiple CME events which were detected on 2-3 June 1997 and 9-10 June 1998, using the LASCO instrument on board SOHO. Each event consists of a group of four related CMEs which emerge from progressively higher latitudes over a time period of approximately 16 hours. In both cases there is on-disk activity visible in EIT EUV images which involves bright emission along the south polar crown filament and there is also ejection of mass from other regions of the corona during the time period of each event. We present a multi-wavelength view of these events (i.e. white-light, H alpha, EUV and, in the case of the 2-3 June 1997 event, soft X-ray), which suggest that ejection of mass from one point in the corona can lead to a destabilization of a previously stable structure and the further ejection of mass from different regions of the corona, in a systematic way. The observations also show that the CME phenomenon is not always a localised event but can occur on a global level; and that complex CME activity canarise at relatively quiet-Sun periods as evidenced by the lack of significant X-ray flares or radio signatures.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 21:48:35