For instance, an X-ray emission, known as the "511-keV emission line," might be linked to the formation of positronium, a bound state between an electron and a positron instead of the traditional ...
Strange events at the heart of the Milky Way could point toward a new dark suspect that annihilates to influence the ...
Once created, these positrons would form positronium—an exotic atom-like state of an electron and a positron—which then ...
Analysis of an arbitrary cross-section in python using the finite element method.