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- W3099839827 abstract "Since Coronal Mass Ejections (CMEs) are the major drivers of space weather, it is crucial to study their evolution starting from the inner corona. In this work we use Graduated Cylindrical Shell (GCS) model to study the 3D evolution of 59 CMEs in the inner ($<$ 3R$_{odot}$) and outer ($>$ 3R$_{odot}$) corona using observations from COR-1 and COR-2 on-board Solar TErrestrial RElations Observatory (STEREO) spacecraft. We identify the source regions of these CMEs and classify them as CMEs associated with Active Regions (ARs), Active Prominences (APs), and Prominence Eruptions (PEs). We find 27 $%$ of CMEs show true expansion and 31 $%$ show true deflections as they propagate outwards. Using 3D kinematic profiles of CMEs, we connect the evolution of true acceleration with the evolution of true width in the inner and outer corona. Thereby providing the observational evidence for the influence of the Lorentz force on the kinematics to lie in the height range of $2.5-3$ R$_{odot}$. We find a broad range in the distribution of peak 3D speeds and accelerations ranging from 396 to 2465 km~s$^{-1}$ and 176 to 10922 m~s$^{-2}$ respectively with a long tail towards high values coming mainly from CMEs originating from ARs or APs. Further, we find the magnitude of true acceleration is be inversely correlated to its duration with a power law index of -1.19. We believe that these results will provide important inputs for the planning of upcoming space missions which will observe the inner corona and the models that study CME initiation and propagation." @default.
- W3099839827 created "2020-11-23" @default.
- W3099839827 creator A5027573957 @default.
- W3099839827 creator A5054363333 @default.
- W3099839827 creator A5071493575 @default.
- W3099839827 creator A5081435493 @default.
- W3099839827 date "2020-08-06" @default.
- W3099839827 modified "2023-10-07" @default.
- W3099839827 title "Connecting 3D Evolution of Coronal Mass Ejections to Their Source Regions" @default.
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- W3099839827 doi "https://doi.org/10.3847/1538-4357/aba1f2" @default.
- W3099839827 hasPublicationYear "2020" @default.
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