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Their orbital nature can give stringent constraints for the mass of the SMBH. In particular, the star S2 has completed at least one period since our first detection of its position, which can provide rich information to examine the properties of the SMBH, and the astrophysical environment surrounding the SMBH. Here, we report an interesting phenomenon that if a significant amount of dark matter or stellar mass is distributed around the SMBH, the precession speed of the S2 stellar orbit could be \u2018slow down\u2019 by at most 27% compared with that without dark matter surrounding the SMBH, assuming the optimal dark matter scenario. We anticipate that future high quality observational data of the S2 stellar orbit or other stellar orbits can help reveal the actual mass distribution near the SMBH and the nature of dark matter.<\/jats:p>","DOI":"10.1038\/s41598-022-18946-7","type":"journal-article","created":{"date-parts":[[2022,9,10]],"date-time":"2022-09-10T10:04:50Z","timestamp":1662804290000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Investigating the nature of mass distribution surrounding the Galactic supermassive black hole"],"prefix":"10.1038","volume":"12","author":[{"given":"Man Ho","family":"Chan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chak Man","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi Wai","family":"Yu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,9,10]]},"reference":[{"key":"18946_CR1","doi-asserted-by":"crossref","unstructured":"Abuter, R. et al. 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