International Space Science Institute (ISSI) International Team: Prominence Cavities
Abstract: The genesis of solar coronal mass ejections (CMEs) is both an intellectually intriguing, fundamental unsolved problem in plasma astrophysics, and a societally relevant subject critical to space weather prediction and mitigation. Dark coronal cavities surrounding cool, dense prominence material are observed within CMEs, but also as equilibrium states in the magnetically-dominated corona. Their plasma properties as observed in their quiescent phase provide clues to the nature of such equilibria and how they may ultimately be lost during CMEs.
July 22, 2002 observations of a polar crown filament and associated cavity. Clockwise from top left: HAO MLSO Mk4 white-light coronagraph; Big Bear Solar Observatory H-alpha; SOHO/EIT 284 Angstroms; SOHO/EIT 304 Angstroms.
From Gibson et al, 2006.
Sarah Gibson (team leader), National Center for Astrophysics, High Altitude Observatory
Terry Forbes, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire
Hugh Hudson, Space Sciences Laboratory, University of California, Berkeley
Therese Kucera, NASA Goddard Space Flight Center
Ben Lynch, Space Sciences Laboratory, University of California, Berkeley
Christophe Marqué, Royal Observatory of Belgium
Brigitte Schmieder, Observatoire de Paris, Meudon
Alphonse Sterling, NASA Marshall Space Flight Center (NASA Chief Planner for Hinode satellite, JAXA)
Kathy Reeves, Harvard-Smithsonian Center for Astrophysics
Durgesh Tripathi, Mullard Space Science Laboratory
Adriaan van Ballegooijen, Harvard-Smithsonian Center for Astrophysics
Mei Zhang, National Astronomical Observatory, Chinese Academy of Sciences
Juan Hao, National Astronomical Observatory, Chinese Academy of Sciences
Don Schmit, University of Colorado, Boulder
Daniel Seaton, Royal Observatory of Belgium
Jun Okumura, Kyoto University
First meeting: January 13-16, 2009
Second meeting: November 3-5, 2009
Cavity proposal to ISSI.
Team resources: observations/presentations/results