[Bothmer 1996 a]
Signatures of fast CMEs in interplanetary space
V. Bothmer and R. Schwenn.
Signatures of fast CMEs in interplanetary space
Advances in Space Research, 17, 319-322.
1996
Contents
While fast coronal mass ejections (CMEs) have been uniquely identified as
sources of transient shock-disturbances in interplanetary space, it is less
understood why different kinds of plasma and magnetic field signatures are
found in the individual post-shock flows.
It is an open question if CMEs can produce various types of solar wind
ejecta, e. g. magnetic flux ropes or flows without highly ordered
internal fields.
To help further clarify the consequences of fast CMEs in interplanetary
space we have examined shocks measured by the Helios 1 spacecraft
during the years 1979-1981 for which the associated CME has been
directly observed with the coronagraph onboard the P78/1 satellite.
Seventeen (68%) out of 25 shock-disturbances were followed
by clearly discernible driver gas signatures, but only 7 (41%) of
the driver gases were magnetic clouds.
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