Tuesday 08 April 2025
A recent study has shed new light on the long-standing mystery of the missing baryons in the universe. Scientists have been searching for these particles, which are thought to make up about a third of the universe’s mass-energy budget, but have been unable to find them.
The researchers used simulations and observations to investigate the role of turbulence in the cosmic fluid. They found that turbulence plays a crucial role in determining the distribution and physical origins of the missing baryons. The study suggests that these particles are not actually missing, but rather are hidden from view due to their interactions with turbulent gas in the universe.
The simulations used by the researchers showed that turbulence can cause gas to be detained in low-density and intermediate-density regions, leading to high baryon fractions in these areas. At the same time, turbulence prevents inflow of gas into high-density regions, resulting in low baryon fractions there. This means that the missing baryons are not evenly distributed throughout the universe, but are instead concentrated in certain regions.
The study also found that turbulent energy is converted into thermal energy through a process known as dissipation. As redshift decreases, more warm gas is heated and transitions into hot gas, which increases the mass fraction of the WHIM (Warm-Hot Intergalactic Medium). This suggests that turbulence plays an important role in regulating the temperature of the universe.
The researchers used data from the IllustrisTNG simulation to test their theory. The simulation included a wide range of astrophysical processes, such as galaxy formation and evolution, star formation, and supernova explosions. By analyzing the results of the simulation, the team was able to confirm that turbulence plays a key role in determining the distribution and physical origins of the missing baryons.
The study has important implications for our understanding of the universe. It suggests that the missing baryons are not a mystery that needs to be solved, but rather a natural consequence of the complex interactions between gas and turbulence in the cosmic fluid. The research also highlights the importance of considering turbulence when studying the distribution and physical origins of matter in the universe.
The findings of this study have significant implications for our understanding of the universe’s history and evolution. By better understanding how turbulence affects the distribution of matter, scientists can gain new insights into the formation and evolution of galaxies, stars, and planets.
Cite this article: “Unraveling the Cosmic Baryon Problem: Turbulent Heating Takes Center Stage”, The Science Archive, 2025.
Baryons, Universe, Turbulence, Cosmic Fluid, Simulations, Observations, Galaxy Formation, Evolution, Star Formation, Supernova Explosions
