Abstract
Observations of a coronal disturbance on 1973 January 11 commencing at 18h01m UT are described. The event is homologous with an earlier disturbance from the same region of the corona. The observations suggest that a cloud of coronal gas containing ∼ 4 × 1039 electrons propagated outwards to ⩾ 5 R ⊙ behind a piston-driven shock wave travelling at a velocity of 800 to 1200 km s−1.
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On leave from Division of Radiophysics, CSIRO, Sydney, Australia.
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Stewart, R.T., Howard, R.A., Hansen, F. et al. Observations of coronal disturbances from 1 to 9 R ⊙ . Sol Phys 36, 219–231 (1974). https://doi.org/10.1007/BF00151562
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DOI: https://doi.org/10.1007/BF00151562