Splashback radius in symmetron gravity

  title={Splashback radius in symmetron gravity},
  author={Omar Contigiani and Valeri Vardanyan and Alessandra Silvestri},
  journal={Physical Review D},
The splashback radius rsp has been identified in cosmological N-body simulations as an important scale associated with gravitational collapse and the phase-space distribution of recently accreted material. We employ a semianalytical approach to study the spherical collapse of dark matter halos in symmetron gravity and provide, for the first time, insights into how the phenomenology of splashback is affected by modified gravity. The symmetron is a scalar-tensor theory which exhibits a screening… 

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