Orientation of the Spins of Flat Galaxies Relative to Filaments of a Large-Scale Structure of the Universe

We present the analysis of the orientation of the rotation moments of galaxies from the Revised Flat Galaxy Catalogue relative to the filaments of the large-scale structure of the Universe. This catalog contains galaxies visible at large inclination angles. Due to the fact that the galaxies are seen almost edge-on, the direction of angular moments of the galaxies is determined with high accuracy. We found a very weak parallel alignment of the galaxy spins along the filament axis. We analyzed the relationship of the alignment on the brightness of the galaxies, their flatness, their distance from the filament axis, and the redshift. It was found that the closest ($$z < 0.03$$) and thinnest ($${a \mathord{\left/ {\vphantom {a b}} \right. \kern-0em} b} > 10$$) galaxies show the greatest parallel alignment (at the level of $$2.4\sigma $$).