Application of Total Variation Minimization to Doppler Tomography

Authors

  • M. Uemura Hiroshima Astrophysical Science Center, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, Japan
  • T. Kato Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
  • D. Nogami Kwasan and Hida Observatories, Kyoto University, Yamashina-ku, Kyoto 607-8471, Japan
  • R. Mennickent Universidad de Concepcion, Departamento de Astronomıa, Casilla 160-C, Concepcion, Chile

DOI:

https://doi.org/10.14311/APP.2015.02.0174

Abstract

We have developed a new model of the Doppler tomography using total variation minimization (DTTVM). We demonstrated that this method can reconstruct localized and non-axisymmetric profiles possibly having sharp edges in the Doppler map. We apply this model to the real data of the dwarf nova, WZ Sge in superoutburst. DTTVM can reproduce the observed spectra with a high precision, while the previous models fail to reproduce localized sources.

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Published

2015-02-23

How to Cite

Uemura, M., Kato, T., Nogami, D., & Mennickent, R. (2015). Application of Total Variation Minimization to Doppler Tomography. Acta Polytechnica CTU Proceedings, 2(1), 174–177. https://doi.org/10.14311/APP.2015.02.0174

Issue

Vol. 2 No. 1 (2015): THE GOLDEN AGE OF CATACLYSMIC VARIABLES AND RELATED OBJECTS - II

Section

Articles