Application of Total Variation Minimization to Doppler Tomography

Application of Total Variation Minimization to Doppler Tomography

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...

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Main Authors: M. Uemura, T. Kato, D. Nogami, R. Mennickent
Format: Article
Language:English
Published: CTU Central Library 2015-02-01
Series:Acta Polytechnica CTU Proceedings
Online Access:https://ojs.cvut.cz/ojs/index.php/APP/article/view/2881
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spelling doaj-4a1651329313490285b24af86e32dc992020-11-24T22:56:17ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822015-02-012117417710.14311/APP.2015.02.01742643Application of Total Variation Minimization to Doppler TomographyM. Uemura0T. Kato1D. Nogami2R. Mennickent3Hiroshima Astrophysical Science Center, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, JapanDepartment of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502, JapanKwasan and Hida Observatories, Kyoto University, Yamashina-ku, Kyoto 607-8471, JapanUniversidad de Concepcion, Departamento de Astronomıa, Casilla 160-C, Concepcion, ChileWe 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.https://ojs.cvut.cz/ojs/index.php/APP/article/view/2881
collection DOAJ
language English
format Article
sources DOAJ
author M. Uemura
T. Kato
D. Nogami
R. Mennickent
spellingShingle M. Uemura
T. Kato
D. Nogami
R. Mennickent
Application of Total Variation Minimization to Doppler Tomography
Acta Polytechnica CTU Proceedings
author_facet M. Uemura
T. Kato
D. Nogami
R. Mennickent
author_sort M. Uemura
title Application of Total Variation Minimization to Doppler Tomography
title_short Application of Total Variation Minimization to Doppler Tomography
title_full Application of Total Variation Minimization to Doppler Tomography
title_fullStr Application of Total Variation Minimization to Doppler Tomography
title_full_unstemmed Application of Total Variation Minimization to Doppler Tomography
title_sort application of total variation minimization to doppler tomography
publisher CTU Central Library
series Acta Polytechnica CTU Proceedings
issn 2336-5382
publishDate 2015-02-01
description 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.
url https://ojs.cvut.cz/ojs/index.php/APP/article/view/2881
work_keys_str_mv AT muemura applicationoftotalvariationminimizationtodopplertomography
AT tkato applicationoftotalvariationminimizationtodopplertomography
AT dnogami applicationoftotalvariationminimizationtodopplertomography
AT rmennickent applicationoftotalvariationminimizationtodopplertomography
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