New study determines a strong mass range on ultralight bosonic dark matter

Over 80 years, dark matter has been a great mystery for researchers. The elusive of direct observation, it has only known its existence with gravitational effects that make it on cosmic structures. Even though there are many indirect evidence of its existence, the true nature of the dark matter is still unknown. An important feature of its particle is mass. While previous studies have forced the mass of formonic dark matter using quantum principles such as Pauli’s exclusion theory, Bosonic dark matter remained less forced. In a recent study, scientists have estimated a new lower range on the mass of ultra-light bosonic dark matter particles.

About studies

According to study Published In physical review papers, the mass of ultralight bosonic dark matter should be more than 2 × 10–21 electron volts (EV), which is 100 times higher than previous estimates using Hygenberg’s uncertainty theory.

The team of researchers, the first writer of the study, Tim Zimraman, a Ph.D. The candidate from The Institute of theoretical Astrophysics, University of Oslo focused on his method of Milky Way’s Satellite Galaxy’s Data. It is 1,000 times smaller dwarf galaxy than Milky Way. By analyzing the internal speed of the stars within the Leo II – the dark is influenced by the dark matter – the team received 5,000 potential dark matter density profile using a device called GravSphere.

He compared them with a profile generated by quantum wave tasks of various dark material particle mass. If the particle is very lighter, the quantum fasting makes it very thinner, preventing it from creating the observed structures. The study concluded that dark matter particle should have more mass than 2.2 × 10 × 10 × electron volt (EV) compared to previous low estimates.

Effect on dark matter study

The popular ultralight dark matter models in findings are significant implications for especially fuzzy dark matter, which usually proposes particles with public around 10–22 EV.

Further, the team planned to expand its functioning into mixed dark matter scenarios, where dark matter is made of particles with various mass.