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Celine Boehm
Possible origin of low energy positrons in our galaxyAbstract. The precise determination by INTEGRAL/SPI of the 511 keV emission properties in our galaxy has proven the existence of anti-matter in our galaxy. Its origin is unknown. However, thanks to SPI findings, it is now possible to exclude a great number of astrophysical sources. Shortly after INTEGRAL's announcement it was realized that Dark Matter could be at the origin of the low energy positrons. After summarizing the implication of SPI findings on possible astrophysical sources, I'll explain the Dark Matter model and discuss its implication for astrophysics, cosmology and particle physics.
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