{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/hints-for-a-gravitational-constant-transition","title":"Hints for a gravitational constant transition in Tully-Fisher data","arxiv_id":"2104.14481","date":"2021-04-29","proceeding":null,"authors":["George Alestas","Ioannis Antoniou","Leandros Perivolaropoulos"],"abstract":"We use an up to date compilation of Tully-Fisher data to search for transitions in the evolution of the Tully-Fisher relation. Using an up to date data compilation, we find hints at $\\approx 3\\sigma$ level for a transition at critical distances $D_c \\simeq 9 Mpc$ and $D_c \\simeq 17 Mpc$. We split the full sample in two subsamples according to the measured galaxy distance with respect to a splitting distance $D_c$ and identify the likelihood of the best fit slope and intercept of one sample with respect to the best fit corresponding values of the other sample. For $D_c \\simeq 9 Mpc$ and $D_c \\simeq 17 Mpc$ we find a tension between the two subsamples at a level of $\\Delta \\chi^2 > 17\\; (3.5\\sigma)$. Using a Monte-Carlo simulation we demonstrate that this result is robust with respect to random statistical and systematic variations of the galactic distances. If the tension is interpreted as due to a gravitational strength transition, it would imply a shift of the effective gravitational constant to lower values for distances larger than $D_c$ by $\\frac{\\Delta G}{G}\\simeq -0.1$. Such a shift is of the anticipated sign and magnitude but at somewhat lower distance (redshift) than the gravitational transition recently proposed to address the Hubble and growth tensions ($\\frac{\\Delta G}{G}\\simeq -0.1$ at transition redshift $z_t\\lesssim 0.01$ ($D_c\\lesssim 40 Mpc$)).","url_abs":"https://arxiv.org/abs/2104.14481v3","url_pdf":"https://arxiv.org/pdf/2104.14481v3.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"hints-for-a-gravitational-constant-transition","repo_url":"https://github.com/GeorgeAlestas/Tully_Fisher_Transition","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}