Baryon Acoustic Oscillation detections from the clustering of massive halos and different density region tracers in TianNu simulation

Understand

The Baryon Acoustic Oscillations (BAO) refer to the ripples of material density in the Universe.

• As the most direct density tracers in the universe, galaxies have been commonly used in studies of BAO peak detection.
• The spatial number density of galaxies, to a certain extent, reflects the distribution of the material density of our Universe.
• Using galaxies as matter tracers, we can construct more overlapping empty spheres (DT voids) than the matter tracers, via Delaunay Triangulation technique.