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Fig. 9.
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Period of the pressure driven instability in the close corona. The panel shows a meridional cut at ϕ = π (180° longitude) for the June 14 simulation. Grey regions mark stable zones. In the inner corona, we clearly identify the tip of helmet streamers and the HCS as unstable zones, with a typical value of Pcr ∼ 10 − 30 h.
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