%0 Journal Article %A Neudegg, D. A. %A Yeoman, T. K. %A Cowley, S. W. H. %A Provan, G. %A Haerendel, G. %A Baumjohann, W. %A Auster, U. %A Fornacon, K. H. %A Georgescu, E. %A Owen, C. J. %D 2012 %T A flux transfer event observed at the magnetopause by the Equator-S spacecraft and in the ionosphere by the CUTLASS HF radar %U https://figshare.le.ac.uk/articles/journal_contribution/A_flux_transfer_event_observed_at_the_magnetopause_by_the_Equator-S_spacecraft_and_in_the_ionosphere_by_the_CUTLASS_HF_radar/10113581 %2 https://figshare.le.ac.uk/ndownloader/files/18229445 %K Science & Technology %K Physical Sciences %K Astronomy & Astrophysics %K Geosciences %K Multidisciplinary %K Meteorology & Atmospheric Sciences %K Geology %K interplanetary physics (ionosphere-magnetosphere interaction) %K magnetospheric physics (magnetopause %K cusp %K and boundary layers %K solar wind-magnetosphere %K interactions) %K DYNAMIC PRESSURE %K PLASMA-FLOW %K MAGNETOSPHERE %K RECONNECTION %K VORTICES %K SHAPE %K CUSP %X Observations of a flux transfer event (FTE) have been made simultaneously by the Equator-S spacecraft near the dayside magnetopause whilst corresponding transient plasma flows were seen in the near-conjugate polar ionosphere by the CUTLASS Finland HF radar. Prior to the occurrence of the FTE, the magnetometer on the WIND spacecraft ~226 RE upstream of the Earth in the solar wind detected a southward turning of the interplanetary magnetic field (IMF) which is estimated to have reached the subsolar magnetopause ~77 min later. Shortly afterwards the Equator-S magnetometer observed a typical bipolar FTE signature in the magnetic field component normal to the magnetopause, just inside the magnetosphere. Almost simultaneously the CUTLASS Finland radar observed a strong transient flow in the F region plasma between 78° and 83° magnetic latitude, near the ionospheric region predicted to map along geomagnetic field lines to the spacecraft. The flow signature (and the data set as a whole) is found to be fully consistent with the view that the FTE was formed by a burst of magnetopause reconnection. %I University of Leicester