Plasmoid Releases in the Heliospheric Current Sheet and Associated Coronal Hole Boundary Layer Evolution
- Foullon, C.
- Lavraud, B.
- Luhmann, J. G.
- Farrugia, C. J.
- Retinò, Alessandro
- Simunac, K. D. C.
- Wardle, N. C.
- Galvin, A. B.
- Kucharek, H.
- Owen, C. J.
- Popecki, M.
- Opitz, A.
- Sauvaud, J.-A.
DOIAbstract
International audienceAs the heliospheric current sheet (HCS) is corotating past STEREO-B, near-Earth spacecraft ACE, Wind and Cluster, and STEREO-A over more than three days between 2008 January 10 and 14, we observe various sections of (near-pressure-balanced) flux-rope- and magnetic-island-type plasmoids in the associated heliospheric plasma sheet (HPS). The plasmoids can qualify as slow interplanetary coronal mass ejections and are relatively low proton beta (<0.5) structures, with small length scales (an order of magnitude lower than typical magnetic cloud values) and low magnetic field strengths (2-8 nT). One of them, in particular, detected at STEREO-B, corresponds to the first reported evidence of a detached plasmoid in the HPS. The...
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