Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.11383 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909957699403776 |
|---|---|
| author | Sheng, Ming-Jie Yu, Hao-Ran Bao, Min Chen, Bing-Hang Shao, Fang-Na Guo, Qi Chen, Yanmei Wang, Huiyuan Pen, Ue-Li Wang, Jie Yang, Xiaohu |
| author_facet | Sheng, Ming-Jie Yu, Hao-Ran Bao, Min Chen, Bing-Hang Shao, Fang-Na Guo, Qi Chen, Yanmei Wang, Huiyuan Pen, Ue-Li Wang, Jie Yang, Xiaohu |
| contents | Tidal torque theory (TTT) predicts that galaxy angular momenta are imprinted by the early tidal field acting on their proto-structures, which are preserved through cosmic evolution and provide the potentially most precise measurement of the early universe. We test this prediction using the gas component of central massive elliptical galaxies, whose angular momenta respond sensitively to external torques. By comparing the observed gas angular momentum vectors with those predicted from the primordial density field reconstructed by ELUCID for the nearby universe, we conclusively detect a strong direction correlation with a significance of about $7σ$. These results provide the first robust observational confirmation of TTT and open a new window for cosmological measurements of neutrino mass and other cosmological parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_11383 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observational evidence of tidal torque in the primordial Universe Sheng, Ming-Jie Yu, Hao-Ran Bao, Min Chen, Bing-Hang Shao, Fang-Na Guo, Qi Chen, Yanmei Wang, Huiyuan Pen, Ue-Li Wang, Jie Yang, Xiaohu Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Tidal torque theory (TTT) predicts that galaxy angular momenta are imprinted by the early tidal field acting on their proto-structures, which are preserved through cosmic evolution and provide the potentially most precise measurement of the early universe. We test this prediction using the gas component of central massive elliptical galaxies, whose angular momenta respond sensitively to external torques. By comparing the observed gas angular momentum vectors with those predicted from the primordial density field reconstructed by ELUCID for the nearby universe, we conclusively detect a strong direction correlation with a significance of about $7σ$. These results provide the first robust observational confirmation of TTT and open a new window for cosmological measurements of neutrino mass and other cosmological parameters. |
| title | Observational evidence of tidal torque in the primordial Universe |
| topic | Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2512.11383 |