2013/12/01 by C. K. Raju, Raju, C. K.
Mathematics · Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Cosmology and Gravitation Theories #Differential rotation #FOS: Physical sciences #Galaxy #Galaxy formation and evolution #Galaxy rotation curve #General Physics (physics.gen-ph) #Geometry #Gravitation #Instability #Mathematical analysis #Mathematics #Mechanics #Newtonian fluid #Physics #Pulsars and Gravitational Waves Research #Rotation (mathematics) #Spiral (railway) #Spiral galaxy #Stars #physics.gen-ph
paper · pdf · doi:10.48550/arxiv.1501.07572
published in arXiv (Cornell University) (Cornell University) · PACS: 04.50.Kd, 98.62.Dm, 04.80.Cc, 02.30.Ks. Keywords: Retarded gravity, galactic rotation curves, functional differential equations, experimental tests of gravity
arxiv created 2013/12/01 · openalex publication_date 2013/12/01 · arxiv updated 2015/01/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The recently formulated retarded gravitation theory (RGT) explains the non-Newtonian velocities of stars in spiral galaxies, *without any new hypothesis*, and may hence be tested even in the laboratory. However, doubts have been expressed that those higher rotation velocities in RGT may be due to instabilities. We resolve these doubts by solving the full functional differential equations of RGT for a model 2-body planetary system. The solution is stable and closely agrees with the Newtonian solution for this planetary case. Thus, the big difference between RGT and Newtonian gravity for a spiral galaxy is not due to any instability in RGT.