Extragalactic positron-annihilation hotspots might mean Milky Way produces far more positrons than thought

Phys.org · 1h ago · 1 min · 0 views

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Positrons—the antimatter counterpart of electrons—are created in high-energy cosmic processes. When normal matter meets its antimatter counterpart, they annihilate, or vanish, and produce a distinctive 511 keV gamma-ray signal. Scientists use this signal to…

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