2 research outputs found
A CME Source Region Catalogue and their Associated Properties
The primary objective of this study is to connect the coronal mass ejections
(CMEs) to their source regions, primarily creating a CME source region (CSR)
catalogue, and secondly probing into the influence the source regions have on
different statistical properties of CMEs. We create a source region catalogue
for 3327 CMEs from 1998 to 2017, thus capturing the different phases of cycle
23 and 24. The identified source regions are segregated into 3 classes, Active
Regions (ARs), Prominence Eruptions (PEs) and Active Prominences (APs), while
the CMEs are segregated into slow and fast based on their average projected
speeds. We find the contribution of these three source region types to the
occurrences of slow and fast CMEs to be different in the above period. A study
of the distribution of average speeds reveals different power-laws for CMEs
originating from different sources, and the power-law is different during the
different phases of cycles 23 and 24. A study of statistical latitudinal
deflections showed equator-ward deflections, while the magnitude of deflections
again bears an imprint of the source regions. An East-West asymmetry is also
noted, particularly in the rising phase of cycle 23, with the presence of
active longitudes for the CMEs, with a preference towards the Western part of
the Sun. Our results show that different aspects of CME kinematics bear a
strong imprint of the source regions they originate from, thus indicating the
existence of different ejection and/or propagation mechanisms of these CMEs.Comment: 29 Pages, 18 Figures. Accepted in The Astrophysical Journal
Supplement Series (APJS