A statistical analysis of two-dimensional patterns and its application to astrometry

0501575 - FZÚ 2019 RIV FR eng J - Journal Article
Závada, Petr - Píška, Karel
A statistical analysis of two-dimensional patterns and its application to astrometry.
Astronomy & Astrophysics. Roč. 614, June (2018), s. 1-10, č. článku A137. ISSN 0004-6361. E-ISSN 1432-0746
Institutional support: RVO:68378271
Keywords : relativistic nuclear collisions * close * statistical * methods * micro * data analysis * surveys * astrometry * binaries * gravitational lensing
OECD category: Particles and field physics
Impact factor: 6.209, year: 2018

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.

Permanent Link: http://hdl.handle.net/11104/0293577