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Paper: Interplanetary Consequences of Coronal Mass Ejection Events Occurred During 18–25 June 2015
Volume: 504, Coimbra Solar Physics Meeting: Ground-based Solar Observations in the Space Instrumentation Era
Page: 59
Authors: Manoharan, P. K.; Maia, D.; Johri, A.; Induja, M. S.
Abstract: In this paper, we review the preliminary results on the propagation effects and interplanetary consequences of fast and wide coronal mass ejection (CME) events, occurred during 18–25 June 2015, in the Sun-Earth distance range. The interplanetary scintillation (IPS) images reveal that the large-scale structures of CME-driven disturbances filled nearly the entire inner heliosphere with a range of speeds, ∼300–1000 km s-1. The comparison of speed data sets, from IPS technique results in the inner heliosphere and in-situ measurements at 1 AU, indicates that the drag force imposed by the low-speed wind dominated heliosphere on the propagation of CMEs may not be effective. The arrival of shocks at 1 AU suggests that a shock can be driven in the interplanetary medium by the central part of the moving CME and also by a different part away from its centre. The increased flux of proton at energies >10 MeV is consistent with the acceleration of particles by the shock ahead of the CME.
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