$R^n$ 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.

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

References in corpus (11)

• f(R) Theories Of Gravity
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Extended Theories of Gravity
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• Low surface brightness galaxies rotation curves in the low energy limit of $R^n$ gravity : no need for dark matter?
• A constant dark matter halo surface density in galaxies
• Dark energy and dark matter as curvature effects
• Analysis of Rotation Curves in the framework of R^n gravity
• Can higher order curvature theories explain rotation curves of galaxies?
• HALOGAS: Extraplanar gas in NGC 3198
• The Distribution of Mass in the Orion Dwarf Galaxy

Cited by in corpus (13)

• Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
• Static spherically symmetric solutions in mimetic gravity: rotation curves & wormholes
• Dark matters on the scale of galaxies
• A special class of solutions in $F(R)$-gravity
• The Dark Matter Distribution in the Spiral $NGC3198$ out to 0.22 $R_{vir}$
• New inhomogeneous universes in scalar-tensor and f(R) gravity
• Symmetry of Brans-Dicke gravity as a novel solution-generating technique
• Galactic rotation dynamics in a new $f(\mathcal{R})$ gravity model
• Light deflection angle through velocity profile of galaxies in $f(R)$ model
• Perfect fluid solutions of Brans-Dicke and f(R)cosmology
• Palatini $f(R)$ gravity tests in the weak field limit: Solar System, seismology and galaxies
• Static Spherically Symmetric solutions in a subclass of Horndeski theories of gravity
• Velocity dispersion of dark matter deficient ultra-diffuse galaxies: A case for modified gravity