Accuracy of the maximum entropy method

Detalhes bibliográficos
Autor(a) principal: Strauss, Federico Maximo
Data de Publicação: 1980
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/98394
Resumo: Although the maximum entropy method is capable of giving the period of a pure sine wave with very few data points, it is very sensitive to noise. The half power width of a spectral peak obtained by this method is proportional to (σn/A)², where σn is the standard deviation of the noise and A is the semiamplitude of the light curve. More serious are the consequences of a systematic shift of the spectral peak, by an amount proportional to the same factor. A simple autocorrelation method that is free of systematic errors is also discussed.
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spelling Strauss, Federico Maximo2014-07-23T02:04:40Z19800004-6361http://hdl.handle.net/10183/98394000144636Although the maximum entropy method is capable of giving the period of a pure sine wave with very few data points, it is very sensitive to noise. The half power width of a spectral peak obtained by this method is proportional to (σn/A)², where σn is the standard deviation of the noise and A is the semiamplitude of the light curve. More serious are the consequences of a systematic shift of the spectral peak, by an amount proportional to the same factor. A simple autocorrelation method that is free of systematic errors is also discussed.application/pdfengAstronomy and Astrophysics. Berlin. Vol. 81, no. 3 (Jan. 1980), p. 344-346Astrofisica estelarEstrelas variaveisEntropiaVariable starsMaximum entropy methodAutocorrelationAccuracy of the maximum entropy methodEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000144636.pdf000144636.pdfTexto completo (inglês)application/pdf311794http://www.lume.ufrgs.br/bitstream/10183/98394/1/000144636.pdf700bdd58447ef186a0c027a528ae987bMD51TEXT000144636.pdf.txt000144636.pdf.txtExtracted Texttext/plain11133http://www.lume.ufrgs.br/bitstream/10183/98394/2/000144636.pdf.txt3537686cdc5ffbea26c5e8274046bcdbMD52THUMBNAIL000144636.pdf.jpg000144636.pdf.jpgGenerated Thumbnailimage/jpeg1933http://www.lume.ufrgs.br/bitstream/10183/98394/3/000144636.pdf.jpg832c90c384b5b3933f2c1431479113bbMD5310183/983942018-10-17 09:01:14.327oai:www.lume.ufrgs.br:10183/98394Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-17T12:01:14Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Accuracy of the maximum entropy method
title Accuracy of the maximum entropy method
spellingShingle Accuracy of the maximum entropy method
Strauss, Federico Maximo
Astrofisica estelar
Estrelas variaveis
Entropia
Variable stars
Maximum entropy method
Autocorrelation
title_short Accuracy of the maximum entropy method
title_full Accuracy of the maximum entropy method
title_fullStr Accuracy of the maximum entropy method
title_full_unstemmed Accuracy of the maximum entropy method
title_sort Accuracy of the maximum entropy method
author Strauss, Federico Maximo
author_facet Strauss, Federico Maximo
author_role author
dc.contributor.author.fl_str_mv Strauss, Federico Maximo
dc.subject.por.fl_str_mv Astrofisica estelar
Estrelas variaveis
Entropia
topic Astrofisica estelar
Estrelas variaveis
Entropia
Variable stars
Maximum entropy method
Autocorrelation
dc.subject.eng.fl_str_mv Variable stars
Maximum entropy method
Autocorrelation
description Although the maximum entropy method is capable of giving the period of a pure sine wave with very few data points, it is very sensitive to noise. The half power width of a spectral peak obtained by this method is proportional to (σn/A)², where σn is the standard deviation of the noise and A is the semiamplitude of the light curve. More serious are the consequences of a systematic shift of the spectral peak, by an amount proportional to the same factor. A simple autocorrelation method that is free of systematic errors is also discussed.
publishDate 1980
dc.date.issued.fl_str_mv 1980
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Astronomy and Astrophysics. Berlin. Vol. 81, no. 3 (Jan. 1980), p. 344-346
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