Modeling images of the Quiet Sun in the extreme ultraviolet

Pierre Chainais; Véronique Delouille; Jean-François Hochedez

doi:10.1117/12.731211

20 September 2007 Modeling images of the Quiet Sun in the extreme ultraviolet

Pierre Chainais, Véronique Delouille, Jean-François Hochedez

Proceedings Volume 6701, Wavelets XII; 670111 (2007) https://doi.org/10.1117/12.731211
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

We address the statistical modeling of solar images provided by the Extreme ultraviolet Imaging Telescope (EIT) onboard the Solar and Heliospheric Observatory (SoHO, a joint ESA/NASA mission). We focus in particular on the less structured regions, the "Quiet Sun". We first review on a brief historical viewpoint on multifractal processes for physical modeling. Then we present a multifractal analysis of Quiet Sun images. Our aim is to identify a model that would permit to simulate images that are similar to real ones, and to use the scale invariance property to obtain artificial images at any finer resolution. We compare various families of models including infinitely divisible cascades and fractional stable fields that permit to synthesize images that are statistically similar to Quiet Sun images. This modeling will assist in promoting forthcoming high resolution observations by analysing sub-pixel variability in today's solar corona images.

Citation Download Citation

Pierre Chainais, Véronique Delouille, and Jean-François Hochedez "Modeling images of the Quiet Sun in the extreme ultraviolet", Proc. SPIE 6701, Wavelets XII, 670111 (20 September 2007); https://doi.org/10.1117/12.731211

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