Observation of a coronal transient from 1.2 to 6 solar radii

Details Observation of a coronal transient from 1.2 to 6 solar radii Observation of a coronal transient from 1.2 to 6 solar radii

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90..275i&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Jan. 1, 1985, p. 275-282.

Astronomy and Astrophysics

Astronomy

91

Coronagraphs, Coronal Loops, Solar Maximum Mission, Solar Prominences, Stellar Mass Ejection, Astronomical Observatories, Polarimetry

Scientific paper

The paper describes in detail the eruptive prominence associated coronal mas ejection of August 5, 1980, as seen in both the Solar Maximum Mission (SMM) coronagraph polarimeter and the Mauna Loa Observatory (MLO) K coronameter and prominence monitor. This event gives the first detailed look at the propagation of a 'depletion' transient into the outer corona. The event begins in the MLO K coronameter as a rising depletion of material, but appears later in the SMM coronograph as an ordinary coronal mass ejection with a three-part structure: a bright core within a dark lunette surrounded by a bright featureles 'loop'. A joint time-height plot of the major structures of the eruption seen by both instruments suggests that the three-part structure in the outer corona can be associated with features in the low corona (prominence, prominence cavity, outer bright front). It is argued from its observed mass that the leading loop in the SMM field of view is probably material that was in the background corona before the event. It is suggested that this material has been displaced and set into motion by the rising 'cavity.'

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