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September 11, 2017 to October 6, 2017
Institut de Physique Théorique, CEA Saclay
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Naik: Simulating Milky Way-like galaxies under f(R) gravity

Sep 25, 2017, 4:10 PM
Institut de Physique Théorique, CEA Saclay

Institut de Physique Théorique, CEA Saclay

Orme des Merisiers batiment 774 Point courrier 136 CEA/DSM/IPhT, CEA/Saclay F-91191 Gif-sur-Yvette Cedex FRANCE


There is a growing body of work utilising N-body simulations with alternative gravity theories, but simulations at a galactic scale remain a relatively unexplored area. In this work, we present the first simulated galaxy rotation curves under f(R) gravity to our knowledge. The f(R) gravity solver MG-GADGET (Puchwein et al. 2013) is employed statically on pre-simulated spiral galaxies, leading to solutions for the rotation curves and screening radii under HuSawicki f(R) gravity. It is shown that under certain parameter regimes, the so-called 'fifth force' yields observable signatures, which can be exploited to constrain departures from classical gravity.

Presentation materials