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Radio‐rich solar eruptive events
Author(s) -
Gopalswamy N.,
Kaiser M. L.,
Thompson B. J.,
Burlaga L. F.,
Szabo A.,
Lara A.,
Vourlidas A.,
Yashiro S.,
Bougeret J. L.
Publication year - 2000
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl003665
Subject(s) - coronal mass ejection , physics , astrophysics , solar flare , solar radio , shock (circulatory) , astronomy , extreme ultraviolet lithography , solar wind , plasma , optics , medicine , quantum mechanics
We report on the analysis of a large number of solar eruptive events that produced radio emission in the dekameter‐hectometric (DH) radio window (1–14 MHz), newly opened by the Wind/WAVES experiment. The distinguishing characteristics of coronal mass ejections (CMEs) associated with the DH type II radio bursts are larger‐than‐average width and speed. Flares of all sizes (X‐ray importance B to X) occurring at all longitudes were associated with the DH type II bursts and CMEs. We found a global enhancement in EUV over an area much larger than the flaring active region in the beginning many events. A comparison between the ‘Shock Associated‧ events and microwave bursts shows that at least half of the events do not have temporal relation. A majority of the DH type II bursts were associated with IP shocks and kilometric type II bursts. In particular, we found a very close relationship between the kilometric type II bursts and the IP shocks.