Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological Simulation
Observational studies have reported that cosmic filaments on the megaparsec scale exhibit rotational motion. Subsequent simulation studies have shown qualitative agreement with these findings, but quantitative discrepancies remain due to differences in data and methods, which require verification. T...
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2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adc0a2 |
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| author | Peng Wang Xiao-xiao Tang Hao-da Wang Noam I. Libeskind Elmo Tempel Wei Wang Youcai Zhang Ming-Jie Sheng Hao-Ran Yu Haojie Xu |
| author_facet | Peng Wang Xiao-xiao Tang Hao-da Wang Noam I. Libeskind Elmo Tempel Wei Wang Youcai Zhang Ming-Jie Sheng Hao-Ran Yu Haojie Xu |
| author_sort | Peng Wang |
| collection | DOAJ |
| description | Observational studies have reported that cosmic filaments on the megaparsec scale exhibit rotational motion. Subsequent simulation studies have shown qualitative agreement with these findings, but quantitative discrepancies remain due to differences in data and methods, which require verification. To address this issue, we adopt the same methodology as used in the observations to identify filament spin from the galaxy distribution constructed from a hydrodynamic simulation. Using the same approach to measure filament spin, we find that the simulation results closely match the observational findings, with only minor discrepancies arising from slight differences in the fraction of filaments classified as dynamically cold or hot based on their dynamic temperature. Additionally, an analysis of how filament spin affects the galaxy spin–filament correlation shows that dynamically cold filaments with strong spin signals have a greater impact on the galaxy spin–filament correlation than those with weaker spin signals and dynamically hot filaments. These results not only provide further evidence that cosmic filaments exhibit spin but also highlight the importance of this rotation in the acquisition of angular momentum by individual galaxies. Future studies exploring the influence of filament spin on galaxy spin may shed light on the physical origins of filaments and the angular momentum of galaxies. |
| format | Article |
| id | doaj-art-3266fa88fc084fe2a34a8bd30285e5d5 |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-3266fa88fc084fe2a34a8bd30285e5d52025-08-20T03:08:20ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01983210010.3847/1538-4357/adc0a2Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological SimulationPeng Wang0https://orcid.org/0000-0003-2504-3835Xiao-xiao Tang1https://orcid.org/0009-0001-7527-4116Hao-da Wang2Noam I. Libeskind3Elmo Tempel4https://orcid.org/0000-0002-5249-7018Wei Wang5Youcai Zhang6Ming-Jie Sheng7https://orcid.org/0000-0002-9891-338XHao-Ran Yu8https://orcid.org/0000-0001-5277-4882Haojie Xu9https://orcid.org/0000-0003-1132-8258Shanghai Astronomical Observatory, Chinese Academy of Sciences , Nandan Road 80, Shanghai 200030, People’s Republic of China ; pwang@shao.ac.cnShanghai Astronomical Observatory, Chinese Academy of Sciences , Nandan Road 80, Shanghai 200030, People’s Republic of China ; pwang@shao.ac.cn; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of ChinaShanghai Astronomical Observatory, Chinese Academy of Sciences , Nandan Road 80, Shanghai 200030, People’s Republic of China ; pwang@shao.ac.cn; University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of ChinaLeibniz-Institut für Astrophysik Potsdam , An der Sternwarte 16, D-14482 Potsdam, GermanyTartu Observatory, University of Tartu , Observatooriumi 1, 61602 Tõravere, EstoniaShanghai Astronomical Observatory, Chinese Academy of Sciences , Nandan Road 80, Shanghai 200030, People’s Republic of China ; pwang@shao.ac.cn; Purple Mountain Observatory, Chinese Academy of Sciences , No. 10 Yuan Hua Road, 210034 Nanjing, People’s Republic of China; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, Anhui, People’s Republic of ChinaShanghai Astronomical Observatory, Chinese Academy of Sciences , Nandan Road 80, Shanghai 200030, People’s Republic of China ; pwang@shao.ac.cnDepartment of Astronomy , Xiamen University, Xiamen, Fujian 361005, People’s Republic of ChinaDepartment of Astronomy , Xiamen University, Xiamen, Fujian 361005, People’s Republic of ChinaShanghai Astronomical Observatory, Chinese Academy of Sciences , Nandan Road 80, Shanghai 200030, People’s Republic of China ; pwang@shao.ac.cnObservational studies have reported that cosmic filaments on the megaparsec scale exhibit rotational motion. Subsequent simulation studies have shown qualitative agreement with these findings, but quantitative discrepancies remain due to differences in data and methods, which require verification. To address this issue, we adopt the same methodology as used in the observations to identify filament spin from the galaxy distribution constructed from a hydrodynamic simulation. Using the same approach to measure filament spin, we find that the simulation results closely match the observational findings, with only minor discrepancies arising from slight differences in the fraction of filaments classified as dynamically cold or hot based on their dynamic temperature. Additionally, an analysis of how filament spin affects the galaxy spin–filament correlation shows that dynamically cold filaments with strong spin signals have a greater impact on the galaxy spin–filament correlation than those with weaker spin signals and dynamically hot filaments. These results not only provide further evidence that cosmic filaments exhibit spin but also highlight the importance of this rotation in the acquisition of angular momentum by individual galaxies. Future studies exploring the influence of filament spin on galaxy spin may shed light on the physical origins of filaments and the angular momentum of galaxies.https://doi.org/10.3847/1538-4357/adc0a2Large-scale structure of the universeCosmic webGalaxy environmentsAstrostatistics |
| spellingShingle | Peng Wang Xiao-xiao Tang Hao-da Wang Noam I. Libeskind Elmo Tempel Wei Wang Youcai Zhang Ming-Jie Sheng Hao-Ran Yu Haojie Xu Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological Simulation The Astrophysical Journal Large-scale structure of the universe Cosmic web Galaxy environments Astrostatistics |
| title | Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological Simulation |
| title_full | Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological Simulation |
| title_fullStr | Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological Simulation |
| title_full_unstemmed | Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological Simulation |
| title_short | Cosmic Filament Spin. II. Filament Spin and Its Impact on Galaxy Spin–Filament Alignment in a Cosmological Simulation |
| title_sort | cosmic filament spin ii filament spin and its impact on galaxy spin filament alignment in a cosmological simulation |
| topic | Large-scale structure of the universe Cosmic web Galaxy environments Astrostatistics |
| url | https://doi.org/10.3847/1538-4357/adc0a2 |
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