Relating near-Earth observations of an interplanetary coronal mass ejection to the conditions at its site of origin in the solar corona

Details Relating near-Earth observations of an interplanetary coronal mass ejection to the conditions at its site of origin in the solar corona Relating near-Earth observations of an interplanetary coronal mass ejection to the conditions at its site of origin in the solar corona

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3213105f&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 13, CiteID L13105

Astronomy and Astrophysics

Astrophysics

8

Interplanetary Physics: Ejecta, Driver Gases, And Magnetic Clouds, Interplanetary Physics: Coronal Mass Ejections (7513), Interplanetary Physics: Interplanetary Shocks, Magnetospheric Physics: Magnetic Storms And Substorms (7954), Solar Physics, Astrophysics, And Astronomy: Flares

Scientific paper

A halo coronal mass ejection (CME) was detected on January 20, 2004. We use solar remote sensing data (SOHO, Culgoora) and near-Earth in situ data (Cluster) to identify the CME source event and show that it was a long duration flare in which a magnetic flux rope was ejected, carrying overlying coronal arcade material along with it. We demonstrate that signatures of both the arcade material and the flux rope material are clearly identifiable in the Cluster and ACE data, indicating that the magnetic field orientations changed little as the material traveled to the Earth, and that the methods we used to infer coronal magnetic field configurations are effective.

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