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| Main Author: | |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2311.17130 |
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| _version_ | 1866910463577554944 |
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| author | Moffat, John W. |
| author_facet | Moffat, John W. |
| contents | Wide binary stars are used to test the modified gravity called Scalar-Tensor-Vector Gravity or MOG. This theory is based on the additional gravitational degrees of freedom, the scalar field $G=G_N(1+α)$, where $G_N$ is Newton's constant, and the massive (spin-1 graviton) vector field $ϕ_μ$. The wide binaries have separations of 2-30 kAU. The MOG acceleration law, derived from the MOG field equations and equations of motion of a massive test particle for weak gravitational fields, depends on the enhanced gravitational constant $G=G_N(1+α)$ and the effective running mass $μ$. The magnitude of $α$ depends on the physical length scale or averaging scale $\ell$ of the system. The modified MOG acceleration law for weak gravitational fields predicts that for the solar system and for the wide binary star systems gravitational dynamics follows Newton's law. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_17130 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Wide Binaries and Modified Gravity (MOG) Moffat, John W. General Relativity and Quantum Cosmology Solar and Stellar Astrophysics Wide binary stars are used to test the modified gravity called Scalar-Tensor-Vector Gravity or MOG. This theory is based on the additional gravitational degrees of freedom, the scalar field $G=G_N(1+α)$, where $G_N$ is Newton's constant, and the massive (spin-1 graviton) vector field $ϕ_μ$. The wide binaries have separations of 2-30 kAU. The MOG acceleration law, derived from the MOG field equations and equations of motion of a massive test particle for weak gravitational fields, depends on the enhanced gravitational constant $G=G_N(1+α)$ and the effective running mass $μ$. The magnitude of $α$ depends on the physical length scale or averaging scale $\ell$ of the system. The modified MOG acceleration law for weak gravitational fields predicts that for the solar system and for the wide binary star systems gravitational dynamics follows Newton's law. |
| title | Wide Binaries and Modified Gravity (MOG) |
| topic | General Relativity and Quantum Cosmology Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2311.17130 |