Width of the 511 KeV Line from the Bulge of the Galaxy
Abstract
In this paper I present the detail estimations for the width of the 511 keV line produced by a mechanism when dark matter is represented by macroscopically large dense nuggets. I argue that the width of 511 keV emission in this mechanism is very narrow (in a few keV range) in agreement with all observations. The dominant mechanism of the annihilation in this case is the positronium formation e+e-to 1S0 to 2γ rather than a direct e+e- to 2γ$ annihilation. I also discuss some generic features of the γ rays spectrum (in few MeV range) resulting from this mechanism.
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