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Geometric Model of a Coronal CavityWe observed a coronal cavity from August 8-18 2007 during a multi-instrument observing campaign organized under the auspices of the International Heliophysical Year (IHY). Here we present initial efforts to model the cavity with a geometrical streamer-cavity model. The model is based the white-light streamer mode] of Gibson et a]. (2003 ), which has been enhanced by the addition of a cavity and the capability to model EUV and X-ray emission. The cavity is modeled with an elliptical cross-section and Gaussian fall-off in length and width inside the streamer. Density and temperature can be varied in the streamer and cavity and constrained via comparison with data. Although this model is purely morphological, it allows for three-dimensional, multi-temperature analysis and characterization of the data, which can then provide constraints for future physical modeling. Initial comparisons to STEREO/EUVI images of the cavity and streamer show that the model can provide a good fit to the data. This work is part of the effort of the International Space Science Institute International Team on Prominence Cavities
Document ID
20100019280
Document Type
Conference Paper
Authors
Kucera, Therese A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gibson, S. E. (National Center for Atmospheric Research Boulder, CO, United States)
Ratawicki, D. (Franklin and Marshall Coll. Lancaster, PA, United States)
Dove, J. (Metro State Coll. of Denver Denver, CO, United States)
deToma, G. (National Center for Atmospheric Research Boulder, CO, United States)
Hao, J. (Academia Sinica China)
Hudson, H. S. (California Univ. Berkeley, CA, United States)
Marque, C. (Royal Observatory Belgium)
McIntosh, P. S. (HelioSynoptics, Inc. unknown)
Reeves, K. K. (Center for Analysis Newport Beach, CA, United States)
Schmidt, D. J. (Colorado Univ. Boulder, CO, United States)
Sterling, A. C. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Tripathi, D. K. (MSSL United Kingdom)
Williams, D. R. (MSSL United Kingdom)
Zhang, M. (Academia Sinica China)
Date Acquired
August 24, 2013
Publication Date
May 23, 2010
Subject Category
Astrophysics
Meeting Information
216th American Astonomical Society (AAS) Meeting(Miami, FL)
Distribution Limits
Public
Copyright
Other