$R^n$ gravity is kicking and alive: the cases of Orion and NGC 3198

Abstract

We analyzed the Rotation Curves of two crucial objects, the Dwarf galaxy Orion and the low luminosity Spiral NGC 3198, in the framework of $R^n$ gravity. We surprisingly found that the no DM power-law f(R) case fits them well, performing much better than $\Lambda$CDM Dark Matter halo models. The level of this unexpected success can be a boost for $R^n$ gravity.

This essay received an honorable mention in the Gravity Research Foundation 2014 Essay Contest. 6 pg, 1 fig

References in corpus (5)

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Cited by in corpus (8)

• Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
• Dark matters on the scale of galaxies
• The Dark Matter Distribution in the Spiral $NGC3198$ out to 0.22 $R_{vir}$
• New inhomogeneous universes in scalar-tensor and f(R) gravity
• Galactic rotation dynamics in a new $f(\mathcal{R})$ gravity model
• Light deflection angle through velocity profile of galaxies in $f(R)$ model
• Palatini $f(R)$ gravity tests in the weak field limit: Solar System, seismology and galaxies
• Velocity dispersion of dark matter deficient ultra-diffuse galaxies: A case for modified gravity