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Forward Modeling of a Coronal CavityWe apply a forward model of emission from a coronal cavity in an effort to determine the temperature and density distribution in the cavity. Coronal cavities are long, low-density structures located over filament neutral lines and are often seen as dark elliptical features at the solar limb in white light, EUV and X-rays. When these structures erupt they form the cavity portions of CMEs The model consists of a coronal streamer model with a tunnel-like cavity with elliptical cross-section and a Gaussian variation of height along the tunnel length. Temperature and density can be varied as a function of altitude both in the cavity and streamer. We apply this model to a cavity observed in Aug. 2007 by a wide array of instruments including Hinode/EIS, STEREO/EUVI and SOHO/EIT. Studies such as these will ultimately help us understand the the original structures which erupt to become CMEs and ICMES, one of the prime Solar Orbiter objectives.
Document ID
20110007878
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Kucera, T. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gibson, S. E.
Schmit, D. J.
Date Acquired
August 25, 2013
Publication Date
March 27, 2011
Subject Category
Solar Physics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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