Researchers have discovered the origin of "ghost particles". Where do cosmic neutrinos come from?
Article by: Andacs Robert Eugen, on 13 September 2022, at 10:04 am Los Angeles time
Neutrinos also called "ghost particles", are cosmic particles that have no mass and pass through ordinary matter without usually interacting with it.
Scientists have sought to discover the origin of these mysterious subatomic particles since their identification in 1956. Recently, researchers from the University of Würzburg, Germany, presented a possible source for these neutrinos.
According to the study, the particles are emitted by powerful jets of matter from active galactic nuclei. An active galactic nucleus consists of gas and dust orbiting a supermassive black hole.
These galactic nuclei are considered to be the most luminous objects in the Universe, as the matter falling into the black hole is transformed into light. Neutrinos are particles without mass and electric charge, which travel through outer space without being influenced in any way by other objects.
After photons, neutrinos are the most widespread type of particles. The German researchers claim that 10 out of 19 analyzed neutrinos originate in galactic nuclei of this kind. They studied data provided between 2008 and 2015 by the IceCube Observatory in Antarctica, home to the world's most powerful neutrino detector.
Understanding how these mysterious particles form and behave also helps them learn details about other unknown elements in the Universe, such as dark energy and dark matter.