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Titolo: Evolution of two EIT/H alpha Moreton waves
Autore: Warmuth, A; Vrsnak, B; Aurass, H; Hanslmeier, A;
- Indirizzi:
- Graz Univ, Inst Geophys Astrophys & Meteorol, A-8010 Graz, Austria Graz Univ Graz Austria A-8010 Astrophys & Meteorol, A-8010 Graz, Austria Hvar Observ, Fac Geodesy, HR-10000 Zagreb, Croatia Hvar Observ Zagreb Croatia HR-10000 ac Geodesy, HR-10000 Zagreb, Croatia Astrophys Inst Potsdam, D-14482 Potsdam, Germany Astrophys Inst Potsdam Potsdam Germany D-14482 D-14482 Potsdam, Germany
- Titolo Testata:
- ASTROPHYSICAL JOURNAL
fascicolo: 1,
volume: 560,
anno: 2001,
parte:, 2
pagine: L105 - L109
- SICI:
- 0004-637X(20011010)560:1<L105:EOTEAM>2.0.ZU;2-B
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- SOHO/EIT OBSERVATIONS; CORONAL TRANSIENT; FLARE; ORIGIN; BURSTS;
- Keywords:
- shock waves; Sun : chromosphere; Sun : corona; Sun : flares;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 22
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Warmuth, A Graz Univ, Inst Geophys Astrophys & Meteorol, Univ Pl 5, A-8010Graz, Austria Graz Univ Univ Pl 5 Graz Austria A-8010 , A-8010 Graz, Austria
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- Citazione:
- A. Warmuth et al., "Evolution of two EIT/H alpha Moreton waves", ASTROPHYS J, 560(1), 2001, pp. L105-L109
Abstract
Since the discovery of EIT waves, questions have remained about the driverof these disturbances and their association with the chromospheric Moretonwaves. In order to resolve some of these issues, two flare-associated transient events (1997 November 3 and 1998 May 2) observed simultaneously in H alpha and EIT are analyzed. The cospatiality of Moreton and EIT wave frontsis established, and a deceleration of the disturbances is found in both events. In the case of 1998 May 2, a detailed analysis of the evolution of the Moreton wave, its kinematics, and perturbation profile is carried out. The results-deceleration, broadening, and decrease of intensity of the profiles-favor the fast-mode shock ("blast wave") scenario over the coronal mass ejection-associated magnetic field evolution hypothesis.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/05/13 alle ore 17:27:45