Volume 616, August 2018
|Number of page(s)||7|
|Published online||13 August 2018|
Cold prominence materials detected within magnetic clouds during 1998–2007
Institute of Space Physics, Luoyang Normal University, Luoyang 471934, PR China
Accepted: 23 April 2018
Context. Coronal mass ejections (CMEs) are intense solar explosive eruptions, and they are frequently correlated with prominence eruptions. Previous observations show that about 70% of CMEs are associated with prominence eruptions. However, there are only a handful of reported observations of prominence plasma materials within interplanetary CMEs (ICMEs), which are the interplanetary manifestations of CMEs. Moreover, approximately 4% of ICMEs exhibit the presence of prominence materials, and approximately 12% of magnetic clouds (MCs) contain prominence materials.
Aims. We aim to comprehensively search for cold prominence materials in MCs observed by the Advanced Composition Explorer (ACE) spacecraft during 1998–2007.
Methods. Using the criteria of unusual O5+ and (or) Fe6+ abundances, we examined 76 MCs observed by ACE during 1998–2007 to search for cold prominence materials.
Results. Our results revealed that out of the 76 MCs, 27 (36%) events contained prominence material regions with low-charge-state signatures.
Conclusions. Although the fraction is still lower than the approximately 70% of CMEs associated with prominence eruptions, it is much higher than 12%. The unusual O5+ and (or) Fe6+ abundances may be simple and reliable criteria to investigate prominence materials in the interplanetary medium.
Key words: Sun: coronal mass ejections (CMEs) / solar wind
© ESO 2018
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.