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.

arXiv comment26 pages, 1 figure; v2: improved version to appear in ApJ; v3: typos corrected, ref. [36] updated

References in corpus (24)

• Ultralight scalars as cosmological dark matter
• Constraints from Dynamical Friction on the Dark Matter Content of Barred Galaxies
• A galaxy lacking dark matter
• Strong bound on canonical ultra-light axion dark matter from the Lyman-alpha forest
• Off the baryonic Tully-Fisher relation: a population of baryon-dominated ultra-diffuse galaxies
• Nonlocal Gravity Simulates Dark Matter
• Further evidence for a population of dark-matter-deficient dwarf galaxies
• A formal framework for a nonlocal generalization of Einstein's theory of gravitation
• Fast galaxy bars continue to challenge standard cosmology
• Nonlocal Modification of Newtonian Gravity
• Observational Tests of Nonlocal Gravity: Galaxy Rotation Curves and Clusters of Galaxies
• A Tip of the Red Giant Branch Distance of $22.1\pm 1.2$ Mpc to the Dark Matter Deficient Galaxy NGC1052-DF2 from 40 Orbits of Hubble Space Telescope Imaging
• Nonlocal Special Relativity
• General framework for cosmological dark matter bounds using $N$-body simulations
• Nonlocal Gravity in the Solar System
• Nonlocal Gravity: Modified Poisson's Equation
• Nonlocal Gravity: The General Linear Approximation
• Orbital evidences for dark-matter-free Milky Way dwarf spheroidal galaxies
• Barred spiral galaxies in modified gravity theories
• Nonlocal Newtonian Cosmology
• Nonlocal gravity: Conformally flat spacetimes
• Nonlocal Gravitomagnetism
• Evolution of spiral galaxies in nonlocal gravity
• Does modified gravity predict fast stellar bars in spiral galaxies?

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