title: Reconnection at high latitudes: antiparallel merging.
abstract: New investigations have renewed the debate on the occurrence of magnetic reconnection of Earth's dayside magnetopause. Here, we show for the first time strong evidence for a high-latitude reconnection site, located on initially closed field lines, where the magnetic field orientations inside and outside the magnetopause are close to antiparallel. The evidence centers on repeated sampling of the ion diffusion region and associated null magnetic field by four spacecraft in formation, together with simultaneous monitoring of the local magnetosheath behavior by a fifth spacecraft.
authors.affiliation: SSTD, RAL, Chilton, DIDCOT, Oxfordshire OX11 0QX, United Kingdom. m.w.dunlop@rl.ac.uk
authors.forename: M W
authors.initials: MW
authors.lastname: Dunlop
authors.forename: Q-H
authors.initials: QH
authors.lastname: Zhang
authors.forename: C-J
authors.initials: CJ
authors.lastname: Xiao
authors.forename: J-S
authors.initials: JS
authors.lastname: He
authors.forename: Z
authors.initials: Z
authors.lastname: Pu
authors.forename: R C
authors.initials: RC
authors.lastname: Fear
authors.forename: C
authors.initials: C
authors.lastname: Shen
authors.forename: C P
authors.initials: CP
authors.lastname: Escoubet