Ghost particles – the subatomic particles also known as the neutrinos can be the key to explain various unknown of our Universe including the mysterious dark matter.
“A hundred billion neutrinos fly through your thumb from the sun every second, even at night. These are very weakly interactive ghosts that we know little about.”Dr. Arthur Loureiro, University of College London Physics & Astronomy
- Neutrinos are the subatomic particles about which very little is known. However, they supposedly can outrun the light.
- These ghost particles are astonishingly almost massless. But the scientists have finally set an upper limit for the lightest neutrino.
- A paper published in Physical Review Letters has estimated the mass of these particles. All it took was more than half a million computing hours of data processing.
- It’s at least six million times lighter than the mass of an electron. While it’s still unknown which one out of the three categories of neutrinos could be the one holding the title of lightest neutrino.
- Interestingly, there are three flavors of these particles – electron, muon, and tau neutrinos. The researchers have placed their bets on electron but some scientists believe it could be the tau neutrinos.
“Neutrinos important to our understanding of the kind of processes that go on in the sun. And also an important building block for the blueprint of nature,”Dan Hooper, a scientist at Fermi National Accelerator Laboratory
- Further, the researchers used the data of 1 million galaxies to study the universe’s expansion by “mapping the distribution of luminous red galaxies and quasars.
- They used information from sources including space- and ground-based telescopes observing the first light of the universe (the cosmic microwave background radiation), exploding stars, the largest 3D map of galaxies in the Universe, particle accelerators, nuclear reactors, and more.