Solar type II and type IV radio bursts observed during 1998-2000 with the ARTEMIS-IV radiospectrograph
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Authors
Caroubalos, C.
Hillaris, A.
Bouratzis, C.
Alissandrakis, C. E.
Preka-Papadema, P.
Polygiannakis, J.
Tsitsipis, P.
Kontogeorgos, A.
Moussas, X.
Bougeret, J. L.
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peer reviewed
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Astronomy & Astrophysics
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Description
A catalogue of the type II and type IV solar radio bursts in the 110-687 MHz range, observed with the radio spectrograph ARTEMIS-IV operated by the University of Athens at Thermopylae, Greece from 1998-2000 is presented. These observations are compared with the LASCO archives of Coronal Mass Ejections and the Solar Geophysical Reports of solar flares (Halpha & SXR) and examined for possible associations. The main results are: - 68% of the catalogue events were associated with CMEs. - 67% of the type II events were associated with CMEs, in accordance with previous results. This percentage rises to 79% in the case of composite type II / IV events. - 77% of the type IV continua were associated with CMEs, which is higher that the CME-type II association probability. - The type II associated CMEs had an average velocity of (835 +/- 380) km s(-1), while the CMEs not associated with type IIs had an average velocity of (500 +/- 150) km s(-1). - All events, but one, were well associated with Halpha and/or SXR flares. - Most of the CME launch times precede by 5-60 min (30 min on average) the associated SXR flare peak; an important fraction (72%) precede the flare onset as well.
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astronomical data bases : miscellaneous, catalogs, sun : activity, sun : corona, sun : flares, sun : radio radiation, coronal mass ejections, x-ray, shock-wave, flares, origin, association, transients, signatures, energetics, events
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<Go to ISI>://000187887900036
http://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/pdf/2004/03/aa2532.pdf
http://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/pdf/2004/03/aa2532.pdf
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en
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Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών