The darkness that shaped the void: dark energy and cosmic voids

Understand

Aims: We assess the sensitivity of void shapes to the nature of dark energy that was pointed out in recent studies.

• We investigate whether or not void shapes are useable as an observational probe in galaxy redshift surveys.
• We focus on the evolution of the mean void ellipticity and its underlying physical cause.
• Methods: We analyse the morphological properties of voids in five sets of cosmological N-body simulations, each with a different nature of dark energy.