Ovramenko, Tetiana (2024) Environmental dependence of the local Hubble constant. Bachelor's Thesis, Astronomy.
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Abstract
The value of the Hubble constant is of great significance in modern cosmology. Despite the large amount of solutions suggested to alleviate the Hubble tension, none of them seem to explain the discrepancy in the measurements fully. One of the assumptions suggests that a local underdensity might be a cause of a higher local Hubble flow. In this thesis, we are going to investigate the possible contribution of voids on the local Hubble constant in an effort to explain the deviation between early and late measurements of H0. Using Watershed Void Finer on the Illustris simulation, we analyze the redshift distribution of dark matter particles and halos in the void regions. A dependence between the excess expansion rate and the size and depth of the voids was found. It was found that voids cannot fully explain the tension between local and global values of the Hubble constant.
| Item Type: | Thesis (Bachelor's Thesis) |
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| Supervisor name: | Weijgaert, M.A.M. van de |
| Degree programme: | Astronomy |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 06 Aug 2024 14:03 |
| Last Modified: | 06 Aug 2024 14:03 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/33884 |
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