SH12A:
Evolution and Instability of Coronal Magnetic Structures Leading to the Onset of Solar Eruptions I


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Session ID#: 61233

Session Description:
Solar eruptions, CMEs and coronal jets, represent an explosive release of stored coronal magnetic energy. It is generally believed that eruptions are driven by the action of core magnetic structures, often observed as solar filaments, that take the form of either a sheared magnetic arcade or a magnetic flux rope. This session is focused on research efforts that address the origin and creation of core magnetic structures and their evolution leading to eruption onset. Key questions include (1) what is the key process of creating the core structure? (2) how does the core structure evolve in the corona in response to photospheric motions? (3) what mechanism triggers the eruption? This session invites contributions that explore the present state of observations and theory regarding the energy buildup and triggers for solar eruptions, and aims to focus research efforts ahead of the upcoming Parker Solar Probe and Solar Orbiter missions.
Primary Convener:  Joel Dahlin, University of Maryland College Park, College Park, MD, United States
Conveners:  Cooper Downs, Predictive Science Inc., San Diego, CA, United States and Jie Zhang, George Mason University, Department of Physics and Astronomy, Fairfax, United States
Primary Liaison:  Joel Dahlin, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Chairs:  Joel Dahlin, NASA Goddard Space Flight Center, Greenbelt, MD, United States and Jie Zhang, George Mason University, Department of Physics and Astronomy, Fairfax, United States
OSPA Liaison:  Cooper Downs, Predictive Science Inc., San Diego, CA, United States
Index Terms:

7509 Corona [SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY]
7513 Coronal mass ejections [SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY]
7519 Flares [SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY]
7531 Prominence eruptions [SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY]

Abstracts Submitted to this Session:

The Origin of Core Magnetic Structures in Coronal Mass Ejections: Observational Findings (Invited) (394961)
Lucie Green, Mullard Space Science Laboratory, Surrey, United Kingdom and Bernhard Kliem, University of Potsdam, Institute of Physics and Astronomy, Potsdam, Germany
The Origin of Core Magnetic Structures in Solar Eruptions: Theoretical Concepts and Numerical Models (Invited) (440988)
Bernhard Kliem, University of Potsdam, Institute of Physics and Astronomy, Potsdam, Germany and Lucie Green, Mullard Space Science Laboratory, Surrey, United Kingdom
Disturbance of Pre-existing Magnetic Polarities Prior to Subsequent Emergence of Magnetic Flux in Close Proximity (410511)
Georgios Chintzoglou, University Corporation for Atmospheric Research, Boulder, CO, United States, Matthias Rempel, National Center for Atmospheric Research, High Altitude Observatory, Boulder, United States and Chun Ming Mark Cheung, CSIRO Astronomy and Space Science Geraldton, Perth, Australia
Conjoined Flux Ropes: A New Mechanism for Filament-Channel Formation at External Polarity Inversion Lines (365165)
Dr. Tibor Torok1, James Edward Leake2, Viacheslav S. Titov3, Xudong Sun4, Mark Linton5, Zoran Mikic3, Roberto Lionello1, Ron L Moore6 and Alphonse C Sterling7, (1)Predictive Science Inc., San Diego, United States, (2)NASA Goddard Space Flight Center, Greenbelt, United States, (3)Predictive Science Inc., San Diego, CA, United States, (4)Stanford University, Stanford, United States, (5)US Naval Research Laboratory, Space Science Division, Washington, DC, United States, (6)National Space Science and Technology Center, Huntsville, AL, United States, (7)NASA Marshall Space Flight Center, Huntsville, AL, United States
Magnetic Flux Cancelation as the Buildup and Trigger Mechanism for CME-Producing Eruptions in two Small Active Regions (379803)
Alphonse C Sterling, NASA Marshall Space Flight Center, Huntsville, AL, United States, Ronald Lee Moore, NASA MSFC, Huntsville, United States, Navdeep Kaur Panesar, NASA MSFC, Huntsville, AL, United States and Ronald L. Moore
An Origin and Evolution of Solar Eruptive Flux Ropes (379974)
Satoshi Inoue1, Kanya Kusano1, Tomoaki Matsumoto2, Magnus Woods3, Daikou Shiota4, Yumi Bamba5 and Takahiro Miyoshi6, (1)Nagoya University, ISEE, Nagoya, Japan, (2)Hosei University, Tokyo, Japan, (3)MSSL University of Collage London, Surrey, United Kingdom, (4)National Institute of Information and Communications Technology, Tokyo, Japan, (5)Nagoya University, ISEE & IAR, Nagoya, Japan, (6)Hiroshima University, Higashi-Hiroshima, Japan

See more of: SPA-Solar and Heliospheric Physics