Gravitational collapse in the expanding Universe
Fuente:
arXiv
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866910786583003136 |
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| author | Popławski, Nikodem |
| author_facet | Popławski, Nikodem |
| contents | We use the Tolman metric to describe gravitational collapse of a sphere of a fluid without pressure in spacetime with the Hubble parameter $H$ related to the cosmological constant. We show that the largest radius of a galaxy formed from such a fluid with mass $M$ is given by $(GM/H^2)^{1/3}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_06631 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gravitational collapse in the expanding Universe Popławski, Nikodem General Relativity and Quantum Cosmology Astrophysics of Galaxies We use the Tolman metric to describe gravitational collapse of a sphere of a fluid without pressure in spacetime with the Hubble parameter $H$ related to the cosmological constant. We show that the largest radius of a galaxy formed from such a fluid with mass $M$ is given by $(GM/H^2)^{1/3}$. |
| title | Gravitational collapse in the expanding Universe |
| topic | General Relativity and Quantum Cosmology Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2501.06631 |