Search for 511 keV emission in satellite galaxies of the Milky Way with INTEGRAL/SPI

Abstract

Context. The positron (e) annihilation -ray signal in the Milky Way (MW) shows a puzzling morphology: a very bright bulge and a very low surface-brightness disk. A coherent explanation of the e origin, propagation through the Galaxy and subsequent annihilation in the interstellar medium has not yet been found. Tentative explanations involve es from… (More)

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@inproceedings{Siegert2016SearchF5, title={Search for 511 keV emission in satellite galaxies of the Milky Way with INTEGRAL/SPI}, author={Thomas Siegert and Roland Diehl and Aaron C. Vincent and Fabrizia Guglielmetti and Martin G. H. Krause and C{\'e}line Boehm}, year={2016} }