Solar Type Ii And Type Iv Radio Bursts Observed During 1998-2000 With The Artemis-Iv Radiospectrograph

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.