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Contact: James Riordon
American Physical Society

Weighing Neutrinos

Caption: These images represent numerical simulations comparing of the density of matter in a slice of the Universe with and without massive neutrinos. The two simulations started from the same initial conditions, with either massless neutrinos (left) or neutrinos with masses of 1.9 eV (right). In the massive neutrino case, matter is spread over a larger number of structures.

Credit: Shankar Agarwal and Hume Feldman, University of Kansas

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