Speaker
Description
Cosmic filaments are one of the most important structures in the universe and have a significant influence on the formation and evolution of galaxies. Research involving both observation and simulation has demonstrated that the direction of a galaxy's spin is associated with the cosmic filament: low-mass galaxies tend to be aligned, while high-mass galaxies are usually perpendicular. However, only a few studies have looked at the properties of filaments, such as their dynamic properties and boundaries. In this talk, we will present our recent work on filament spin, filament radius, and its effect on galaxy spin. We are the first to detect the filament spin signal using SDSS data, and the signal has been repeated in simulations. We will also show how the filament spin affects the galaxy spin. Furthermore, by using the DisPerSE filament finder, we have defined the filament boundary (radius) in the TNG and MTNG simulations and SDSS data. We have also found the dependence of filament radius on multiple properties and their evolution pattern.
