Precision cosmology with voids in the final BOSS data

Understand

We report novel cosmological constraints obtained from cosmic voids in the final BOSS DR12 dataset.

• They arise from the joint analysis of geometric and dynamic distortions of average void shapes (i.e., the stacked void-galaxy cross-correlation function) in redshift space.
• Our model uses tomographic deprojection to infer real-space void profiles and self-consistently accounts for the Alcock-Paczynski (AP) effect and redshift-space distortions (RSD) without any prior assumptions on cosmology or structure formation.
• It is derived from first physical principles and provides an extremely good description of the data at linear perturbation order.