A Simultaneous Forbush Decrease Associated with an Earthward Coronal Mass Ejection Observed by STEREO

Oh, S. Y. and Y. Yi, A Simultaneous Forbush Decrease Associated with an Earthward Coronal Mass Ejection Observed by STEREO, Sol. Phys., 280, 197-204 (2012) (ADS)

The cartoon

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Illustrating the volume of space occupied by a magnetic cloud responsible for a Forbush decrease as observed by Earth-based neutron monitors. Such an event perturbs the arrival directions of galactic cosmic rays and in principle provides information about the magnetic structure of an ICME.

Date: 2019 December 11