Multiple spacecraft study of solar wind dynamics

Physics – Plasma Physics

Scientific paper

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[2100] Interplanetary Physics, [2101] Interplanetary Physics / Coronal Mass Ejections, [2102] Interplanetary Physics / Corotating Streams, [7851] Space Plasma Physics / Shock Waves

Scientific paper

We combined simultaneous solar wind observations from five different spacecraft: Helios 1, Helios 2, IMP-8, Voyager 1 and Voyager 2, from November 1977 to February 1978 (ascending phase of solar cycle 21). During this period the large-scale dynamics of the solar wind near of the ecliptic plane was characterized by transient forward shocks (TFSs), Coronal Mass Eyections (CMEs), stream interaction regions (SIRs), and complex and variable magnetic sector structures. We characterize the solar wind streams observed by the five spacecraft. We employ maps of large-scale features to study the location of TFSs and SIRs with respect to the magnetic sector structure detected by each spacecraft. We study the geometry of the SIRs by analyzing the orientation of their Stream Interaction Regions. We study the variations of the sheath width for all the shock-CME events.

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