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Titolo:
Dynamics of solar coronal eruptions
Autore:
Vrsnak, B;
Indirizzi:
Univ Zagreb, Hvar Observ, Fac Geodesy, HR-10000 Zagreb, Croatia Univ Zagreb Zagreb Croatia HR-10000 ac Geodesy, HR-10000 Zagreb, Croatia
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A11, volume: 106, anno: 2001,
pagine: 25249 - 25259
SICI:
0148-0227(20011101)106:A11<25249:DOSCE>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
MASS-EJECTIONS; FILAMENT ERUPTIONS; HELICAL STRUCTURE; PROMINENCE; PROPAGATION; TRANSIENTS; KINEMATICS; STABILITY; MOTION; PLASMA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Vrsnak, B Univ Zagreb, Hvar Observ, Fac Geodesy, Kaciceva 26, HR-10000 Zagreb, Croatia Univ Zagreb Kaciceva 26 Zagreb Croatia HR-10000 Zagreb, Croatia
Citazione:
B. Vrsnak, "Dynamics of solar coronal eruptions", J GEO R-S P, 106(A11), 2001, pp. 25249-25259

Abstract

The kinematics of 87 solar eruptive events (flare sprays, eruptive prominences, and coronal transients) observed above the solar limb are studied. The data reveal a clear statistical trend for the highest measured value of the acceleration to be lower in the events taking place at a larger radial distance. The majority of events (84%) show a phase of exponential-like growth of the velocity. The growth rate decreases with the height at which thisregime sets in. A phase of constant acceleration was found only in 11% of cases. In the postacceleration phase a constant velocity regime was found in 57% of events. A considerable number of eruptions (32%) exposed a deceleration, most often showing an exponential-like decay of the velocity. The related theoretical models are confronted with the observations, and the implications axe discussed.

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Documento generato il 23/01/20 alle ore 03:22:38