Dynamical Friction in Nonlocal Gravity

Abstract

We study dynamical friction in the Newtonian regime of nonlocal gravity (NLG), which is a classical nonlocal generalization of Einstein's theory of gravitation. The nonlocal aspect of NLG simulates dark matter. The attributes of the resulting effective dark matter are described and the main physical predictions of nonlocal gravity, which has a characteristic lengthscale of order 1 kpc, for galactic dynamics are presented. Within the framework of NLG, we derive the analogue of Chandrasekhar's formula for dynamical friction. The astrophysical implications of the results for the apparent rotation of a central bar subject to dynamical friction in a barred spiral galaxy are briefly discussed.

26 pages, 1 figure; v2: improved version to appear in ApJ; v3: typos corrected, ref. [36] updated

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Cited by in corpus (9)

• Characteristics of Effective Dark Matter in Nonlocal Gravity
• Dynamic Dark Energy from the Local Limit of Nonlocal Gravity
• Anisotropic Cosmology in the Local Limit of Nonlocal Gravity
• Local Limit of Nonlocal Gravity: Cosmological Perturbations
• Local Limit of Nonlocal Gravity: A Teleparallel Extension of General Relativity
• Dynamical Friction and Tidal Interactions
• Gödel's Universe and the Local Limit of Nonlocal Gravity
• Nonlocal Gravity: Modification of Newtonian Gravitational Force in the Solar System
• Dwarf galaxies in non-local gravity