Void Lensing in Cubic Galileon Gravity

Understand

Weak lensing studies via cosmic voids are a promising probe of Modified Gravity (MG).

• Excess surface mass density (ESD) is widely used as a lensing statistic in weak lensing research.
• In this paper, we use the ray-tracing method to study the ESD around voids in simulations based on Cubic Galileon (CG) gravity.
• With the compilation of N-body simulation and ray-tracing method, changes in structure formation and deflection angle resulting from MG can both be considered, making the extraction of lensing signals more realistic.