Associations between coronal mass ejections and metric type II bursts
A statistical comparison of metric type II bursts and coronal mass ejections (CMEs) during 1979--1982 revealed the following principal results: 1. Type II bursts without CMEs were associated with short-lived (0.5 hr) soft X-ray events, but not with interplanetary shocks at the Helios 1 spacecraft. 2. Type II bursts with CMEs were associated with longer-lived X-ray events (3 hr on the average) and interplanetary shocks, and the CMEs had speeds greater than 400 km s/sup -1/. 3. CMEs without metric type II bursts were divided equally into groups faster and slower than 455 km s/sup -1/. The faster CMEs were associated with interplantary shocks, some of which originated on the visible disk where metric type II bursts should have been observed if they had occurred.
- Research Organization:
- E. O. Hulburt Center for Space Research, Naval Research Laboratory
- OSTI ID:
- 6574785
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 279:2; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERES
ELECTROMAGNETIC RADIATION
RADIATIONS
RADIOWAVE RADIATION
SHOCK WAVES
SOLAR ACTIVITY
SOLAR CORONA
SOLAR FLARES
SOLAR RADIATION
SOLAR RADIO BURSTS
SOLAR RADIOWAVE RADIATION
SOLAR WIND
SOLAR X-RAY BURSTS
STELLAR ATMOSPHERES
STELLAR CORONAE
STELLAR RADIATION