Researchers have proposed a new way to detect dark matter using neutron stars. Dark matter makes up about 85% of the matter in the universe but has never been directly observed. A team from the universities of Amsterdam, Princeton, and Oxford suggests that neutron stars could trap particles called axions.
Axions are a possible candidate for dark matter. They are very light and barely interact with other matter, making them hard to detect. Neutron stars are extremely dense objects left over from exploded massive stars.
They pack the mass of 1.4 suns into a ball only 12-25 miles across. They also have some of the strongest magnetic fields ever seen. The researchers say neutron stars could accumulate clouds of axions over millions of years.
The stars’ immense gravity would trap the axions without absorbing them completely like black holes would. When exposed to a strong magnetic field, axions could convert into light particles.
Detecting axion clouds with neutron stars
The magnetic fields of neutron stars are strong enough to make this happen. While a single axion’s light might be too faint to see, a huge cloud of them could produce a detectable signal. This light could show up in two ways.
It might be a constant glow from the neutron star’s surface throughout its life. Or, it could be a single bright burst when the star collapses at the end of its life cycle. Scientists have not yet spotted any axion clouds around neutron stars.
But this research gives them a better idea of what to look for. Finding axions would confirm their existence and help solve the mystery of dark matter. It would be a major breakthrough in understanding the universe.
The ability to finally detect dark matter would have huge implications. It would change our view of the cosmos and fill in a major gap in astrophysics. Researchers hope this new approach using neutron stars will shed light on one of the universe’s biggest secrets.
Noah Nguyen is a multi-talented developer who brings a unique perspective to his craft. Initially a creative writing professor, he turned to Dev work for the ability to work remotely. He now lives in Seattle, spending time hiking and drinking craft beer with his fiancee.
