Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30lsep4l&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 12, pp. SEP 4-1, CiteID 8016, DOI 10.1029/2002GL016481
Astronomy and Astrophysics
Astrophysics
19
Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections, And Astronomy: Radio Emissions, And Astronomy: Corona
Scientific paper
We present a statistical study of the characteristics of CMEs which show temporal association with type II bursts in the metric domain but not in the decameter/hectometric (DH) domain. This study is based on a set of 80 metric (m) type II bursts associated with surface events in the solar western hemisphere. It was found that in general, the distribution of the widths and speeds of the CMEs associated with metric (but not DH) type II bursts are shifted towards higher values compared to those of all CMEs observed by LASCO in the 1996-2001 period. We also found that these distributions have lower values than the same distributions of the CMEs associated with DH type II bursts. In terms of energy, this means that the CMEs associated only with metric type II bursts are more energetic (wider and faster) than regular CMEs but less energetic than the CMEs associated with DH type II bursts.
Gopalswamy Nat
Lara Alejandro
Munoz Gerardo
Nunes Steven
Yashiro Seiji
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