Possible evidence for axino dark matter in the galactic bulge
Possible evidence for axino dark matter in the galactic bulge
Recently, the SPI spectrometer on the INTEGRAL satellite observed strong 511 keV line emission from the galactic bulge. Although the angular distribution (spherically symmetric with width of $\ensuremath{\sim}9\ifmmode^\circ\else\textdegree\fi{}$) of this emission is difficult to account for with traditional astrophysical scenarios, light dark matter particles could account for the observation. In …