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dc.creatorMalović, Miodrag
dc.creatorJevremović, Darko
dc.date.accessioned2023-03-09T08:25:17Z
dc.date.available2023-03-09T08:25:17Z
dc.date.issued2016
dc.identifier.isbn978-86-80019-74-1
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/6007
dc.description.abstractWalsh analysis is practically analogous to Fourier analysis, except that square wave is used instead of the sine one. It has one major advantage over Fourier - it can be performed much faster. This may seem of little importance at first, since computers have gotten to the point where most programmers do not take any care about the size of their code or the speed of their calculations. However, LSST will provide astronomers with huge data sets, and searching for periodicity peaks with high resolution might require enourmous amount of calculations. To perform this analysis in real time (a matter of seconds) it is important to skip non-necessary mathematical operations and focus on applying complex period detection algorithms (such as line fitting, analysis of variance, and others) only in the vicinity of expected peaks, not on all arbitrary periods. To do this efficiently, we propose that Walsh analysis is applied on the data first. A simulation was conducted with artifiucially generated light curves for the three types of variable stars: RRLyr, Algols and classical cepheids. LSST current baseline cadence (enigma 1189) was used for the timing of samples.sr
dc.language.isoensr
dc.publisherAstronomical Observatory Belgradesr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/44002/RS//sr
dc.rightsopenAccesssr
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceLSST@Europe2 Conference Book of Abstractssr
dc.titleWalsh analysis - a convenient preprocessor for period detection in astronomysr
dc.typeconferenceObjectsr
dc.rights.licenseBYsr
dc.citation.spage58
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/15976/bitstream_15976.pdf
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_technorep_6007
dc.type.versionpublishedVersionsr


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