Observational Evidence of Cosmic Dynamical Anisotropy A Robust Correlation between Stellar Surface Density and Non-Gravitational Flows
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2025
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| _version_ | 1866901100855033856 |
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| author | Samadi |
| author_facet | Samadi |
| contents | <p><span>This paper presents a model-independent phenomenological analysis of the peculiar velocity field of galaxies and their internal structural properties. Utilizing available observational data and employing robust statistical methods, the existence of a low-amplitude yet exceptionally stable directional component within the velocity field is investigated. The results indicate that, despite its small magnitude, this signal exhibits high spatial coherence and statistical stability, making it unlikely to be attributed to random fluctuations or observational noise.</span></p> <p><span>Comprehensive control analyses, including permutation tests and sensitivity assessments regarding data selection and reference frame variations, demonstrate that this signal remains robust against methodological changes. A comparison of these findings with expectations from standard gravitational descriptions reveals a subtle yet significant tension, suggesting the potential absence of certain influential components in the conventional modeling of cosmic velocity fields.</span></p> <p><span>Without relying on a specific theoretical framework, and based solely on data-driven statistical analysis, this study provides evidence for an underlying effective component on large cosmic scales. These findings can serve as a foundational point for deeper investigations into identifying the physical origin of this signal.</span></p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18069271 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Observational Evidence of Cosmic Dynamical Anisotropy A Robust Correlation between Stellar Surface Density and Non-Gravitational Flows Samadi Cosmic Anisotropy Peculiar Velocities Non-Gravitational Flows Possible Lorentz Violation Surface Density Equivalence Principle Cosmic Dynamics Effective Background Field Dark Sector <p><span>This paper presents a model-independent phenomenological analysis of the peculiar velocity field of galaxies and their internal structural properties. Utilizing available observational data and employing robust statistical methods, the existence of a low-amplitude yet exceptionally stable directional component within the velocity field is investigated. The results indicate that, despite its small magnitude, this signal exhibits high spatial coherence and statistical stability, making it unlikely to be attributed to random fluctuations or observational noise.</span></p> <p><span>Comprehensive control analyses, including permutation tests and sensitivity assessments regarding data selection and reference frame variations, demonstrate that this signal remains robust against methodological changes. A comparison of these findings with expectations from standard gravitational descriptions reveals a subtle yet significant tension, suggesting the potential absence of certain influential components in the conventional modeling of cosmic velocity fields.</span></p> <p><span>Without relying on a specific theoretical framework, and based solely on data-driven statistical analysis, this study provides evidence for an underlying effective component on large cosmic scales. These findings can serve as a foundational point for deeper investigations into identifying the physical origin of this signal.</span></p> |
| title | Observational Evidence of Cosmic Dynamical Anisotropy A Robust Correlation between Stellar Surface Density and Non-Gravitational Flows |
| topic | Cosmic Anisotropy Peculiar Velocities Non-Gravitational Flows Possible Lorentz Violation Surface Density Equivalence Principle Cosmic Dynamics Effective Background Field Dark Sector |
| url | https://doi.org/10.5281/zenodo.18069271 |