A search for forerunner activity associated with coronal mass ejections

Details A search for forerunner activity associated with coronal mass ejections A search for forerunner activity associated with coronal mass ejections

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.7227k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, July 1, 1987, p. 7227-7234.

Physics

5

Solar Activity, Solar Corona, Stellar Mass Ejection, Coronagraphs, Magnetohydrodynamic Stability, Skylab Program, Stellar Models

Scientific paper

The authors have performed a systematic search for forerunners using the white-light coronagraph observations obtained with the Solwind instrument on board the P78-1 satellite. Forty-four bright, well-observed events were selected and analyzed, employing selection criteria and analysis methods similar to those used by Jackson and Hildner (1978). Approximately half of these events either do not exhibit low-density plateaus in front or are questionable (e.g., a frontal plateau only appears intermittently). Based on their analysis of the remaining coronal mass ejections (CMEs), the authors conclude that identification of the forerunner as a distinct entity probably is not warranted, and that the low-density plasma is an integral part of the CME itself.

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