Astronomical detection of a radioactive molecule 26AlF in a remnant of an ancient explosion

Tomasz Kamiński, Romuald Tylenda, Karl M. Menten +6

Decades ago, $\gamma$-ray observatories identified diffuse Galactic emission at 1.809 MeV originating from ${\beta }^{+}$ decays of an isotope of aluminium, ${}^{26}$Al, that has a mean-life time…