A new analysis offers an innovative means to predict ‘cosmological signatures’ for models of dark matter. A method for predicting the composition of dark matter has been developed by a team of physicists. Dark matter is invisible matter detected only by its gravitational pull on ordinary matter an
An artist’s rendition of big bang nucleosynthesis, the early universe period in which protons “p” and neutrons “n” combine to form light elements. The presence of dark matter “χ” changes how much of each element will form. Credit: Image courtesy of Cara Giovanetti/New York University
is invisible matter detected only by its gravitational pull on ordinary matter and whose discovery has been long sought by scientists. The team of scientists sought a means to spot the presence of a specific category of dark matter—that with a mass between that of the electron and the proton—by creating models that took into account both BBN and CMB.
In their research, the team made predictions of cosmological signatures linked to the presence of certain forms of dark matter. These signatures are the result of dark matter changing the temperatures of different particles or altering how fast the universe expands.
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