“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 16595
School of Particles and Accelerator
  Title:   Gravitational lensing by black holes in Einstein quartic gravity
1.  Hossein Khodabakhshi
2.  Robert B. Mann
  Status:   Published
  Journal: Phys. Rev. D
  No.:  24017
  Vol.:  103
  Year:  2021
  Supported by:  IPM
We investigate gravitational lensing effects of spherically symmetric black holes in Einstein Quartic Gravity (EQG). Using an approximate analytic solution obtained by continued fraction methods we consider the predictions of EQG for lensing effects by supermassive black holes at the center of our galaxy and others in comparison with general relativity (GR). We numerically compute both time delays and angular positions of images and find that they can deviate from GR by as much as milliarcseconds, suggesting that observational tests of EQG are feasible in the near future. We discuss the challenges of distinguishing the predictions of EQG from those of Einstein Cubic Gravity.

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