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A statistical analysis of two-dimensional patterns and its application to astrometry
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SYSNO ASEP 0501575 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A statistical analysis of two-dimensional patterns and its application to astrometry Author(s) Závada, Petr (FZU-D) RID, ORCID
Píška, Karel (FZU-D) RID, ORCIDNumber of authors 2 Article number A137 Source Title Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 614, June (2018), s. 1-10Number of pages 10 s. Publication form Online - E Language eng - English Country FR - France Keywords relativistic nuclear collisions ; close ; statistical ; methods ; micro ; data analysis ; surveys ; astrometry ; binaries ; gravitational lensing Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics Institutional support FZU-D - RVO:68378271 UT WOS 000436412400001 EID SCOPUS 85049596759 DOI 10.1051/0004-6361/201732170 Annotation Here we develop a general statistical procedure for the analysis of finite two-dimensional (2D) patterns inspired by the analysis of heavy-ion data. The method is used in the study of publicly available data obtained by the Gaia-ESA mission. We prove that the procedure can be sensitive to the limits of accuracy of measurement, and can also clearly identify the real physical effects on the large background of random distributions. As an example, the method confirms the presence of binary and ternary star systems in the studied data. At the same time, the possibility of the statistical detection of the gravitational microlensing effect is discussed.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2019
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