Geometric model of a coronal cavity [presentation]

AMS Citation:
Kucera, T. A., and Coauthors, 2010: Geometric model of a coronal cavity [presentation]. 216th American Astronomical Society Meeting, American Astronomical Society, Miami, FL, US.
Date:2010-05-23
Resource Type:conference material
Title:Geometric model of a coronal cavity [presentation]
Abstract: We 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 model of Gibson et al. (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.
Peer Review:Non-refereed
Copyright Information:Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
OpenSky citable URL: ark:/85065/d700014b
Author(s):
  • Therese Kucera
  • Sarah Gibson - NCAR/UCAR
  • D. Rastawicki
  • J. Dove
  • Giuliana de Toma - NCAR/UCAR
  • J. Hao
  • H. Hudson
  • C. Marque
  • P. McIntosh
  • K. Reeves
  • D. Schmidt
  • A. Sterling
  • D. Tripathi
  • D. Williams
  • M. Zhang
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