Positron Annihilation in the Nuclear Outflows of the Milky Way

Fiona H. Panther, Roland M. Crocker, Yuval Birnboim +2

Observations of soft gamma rays emanating from the Milky Way from SPI/\textit{INTEGRAL} reveal the annihilation of $\sim 2\times 10^{43}$ positrons every second in the Galactic bulge…