Quantitative, three-dimensional analysis of the global corona with multi-spacecraft differential emission measure tomography

Richard A. Frazin, Alberto M. Vsquez, Farzad Kamalabadi

Research output: Contribution to journalArticle

Abstract

A previous paper (Frazin et al. 2005b) introduced the concept of differential emission measure tomography (DEMT), which is a three-dimensional (3D) extension of the classical differential emission measure technique for determining the distribution of temperatures in a volume of plasma. The information for the reconstruction in the three spatial dimensions is provided by solar rotation and/or multi-spacecraft views. This paper describes, quantitatively, the procedure for implementing DEMT with data from NASA's STEREO/EUVI instrument, including the radiometry, line-of-sight geometry, and image preparation steps. An example of a quantitative, multiband, 3D reconstruction and local differential emission measure curves are given, and it is demonstrated that, when applicable, DEMT is a simple 3D analysis tool that obviates the need for structure-specific modeling.

Original languageEnglish (US)
Pages (from-to)547-560
Number of pages14
JournalAstrophysical Journal
Volume701
Issue number1
DOIs
StatePublished - Jan 1 2009

Keywords

  • Sun: UV radiation
  • Sun: corona
  • Sun: prominences

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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