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Mulligan et al. (2013)

Summary – Monday 24, 2017. S12: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling. Scene Setting Talks: Miho Janvier (IAS) & Ben Lynch (UCB). 1 st Part: How Good are the In Situ Observations of 3D CME/ICME FRs? 2 nd Part:

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Mulligan et al. (2013)

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  1. Summary – Monday 24, 2017 S12: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling Scene Setting Talks: Miho Janvier (IAS) & Ben Lynch (UCB) • 1st Part: • How Good are the In Situ Observations of 3D CME/ICME FRs? • 2nd Part: • 3D CME FR Orientation From Source Region Configuration • 3D CME FR Orientation From Corona + Inner HelioObs/Model • 3rd Part (Future - Thursday) • ICME Heliospheric Propagation & Evolution (!) Mulligan et al. (2013) Janvier et al. (2015)

  2. S3: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling 1st Part: How Good are the In Situ Observations of 3D CME/ICME FRs? • How good the in-situ data works for ICME reconstruction? • (B. Jackson) Discussion about how good is the in-situ data. Discrepancies between in situ data from two close s/p. • In-situ reconstruction models and techniques. • Boundaries – (M. Haw) how can the in-situ reconstruction can be affected by the choice.

  3. S3: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling 2nd Part: 3D CME FR Orientation From Source Region ConfigurationActive Region PILs, Filament Orientation, EUV Dimmings, Flare Loop Orientation, Reconnection Flux Content, Magnetic Helicity, etc • (B. Wood) – Discussion about the not clear solar source of some kind of CMEs, such as stealth CMEs. Clear in-situ and corographs flux-ropes but not clear solar source signatures. • Terminology conflict or clarifications (K.D. Leka), what are the magnetic clouds, flux-rope • Discussion about twisting/helicity – (P. Demoulin) pointed out that most of the twisting is coming during the ejection due to reconnection process underneath of the overlying magnetic field. • Internal reconnection – (J. Drake), most of the reconnection in the solar wind is happening inside of the flux-rope because of the low beta plasma. • Force-free (P. Demoulin, B. Lynch, M. Linton, P. Bellan): The FR may not be in equilibrium because is expanding faster. • Pancaking (P. Demoulin, B. Wood, J. Drake) – numerical model can show cases of strong pancaking but the observations say that is not as extreme as the models suggest.

  4. S3: Understanding the Structure and Morphology of Coronal Mass Ejections by Integrating Observations and Modeling 3rd Part: 3D CME FR Orientation From Corona + Inner HelioObs/ModelWhite-Light Coronagraph Structures, 3-Part CMEs, Halo-CMEs, etc Correlation between flux-ropes reconstructions. • Flux-rope models for different data but not consistency between all view points. • How do we use different data for reconstructions? How do we use properties to define flux-ropes?We are using indications of flux-ropes but not real -- ‘we are close to the right thing but constantly out of the real thing.’ • Christina Kay – Looking deflection/rotation effect using the PFSS technique to get the source orientation and FORECAT model to get the propagation, found consistency between the events orientation (longitude, latitude, tilt). • Brian Wood – Showed a comparative reconstruction using a list of Earth directed events. There is a strong discrepancy between models.

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