Researchers from the University of Sheffield have identified signs of a potential interaction between dark matter and neutrinos. The study could point to the existence of previously unknown processes beyond the standard cosmological model.
According to the paper published in the journal Nature Astronomy, dark matter and neutrinos may not be completely independent components of the universe, as was previously assumed. Dark matter constitutes about 85% of all matter, yet it has not been directly detected so far. Scientists infer its existence from its gravitational influence on galaxies and galaxy clusters.
The authors of the study analyzed data from various stages of the universe’s evolution. They compared observations of the early cosmos obtained with the Atacama Cosmology Telescope and the Planck telescope to more recent data, including observations of dark energy and maps of galaxy distribution.
The researchers noted a discrepancy between the predictions of the standard cosmological model and current observations. According to calculations based on early universe data, cosmic structures should have become denser than what is observed today. A possible interaction between dark matter and neutrinos could account for this difference.
The researchers caution that it is too early to draw definitive conclusions. The hypothesis can be tested through future observations with new telescopes, experiments involving cosmic microwave background radiation, and studies of gravitational lensing. If a link between dark matter and neutrinos is confirmed, it could represent a major breakthrough in understanding the nature of the universe.
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