The relationship between prominence eruptions and global coronal waves

There has been much debate over the physical mechanism for producing global coronal waves (‘EIT waves’). In this work, we investigate whether filament eruptions are directly associated with coronal waves. We analyse 45 coronal waves and search for evidence of filament eruptions. We used SOHOEIT data, and EIT data along with any available ground-based Hα data to search for filament eruptions, and found that more than 50 % of coronal waves are clearly associated with eruptions. The speeds of the coronal waves, and the filament eruptions are similar. We discuss the implications of these results.