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micrOMEGAs is a code to compute dark matter observables in generic extensionsof the standard model. This new version of micrOMEGAs is a major update whichincludes a generalization of the Boltzmann equations to accommodate models withasymmetric dark matter or with semi-annihilation and a first approach to ageneralization of the thermodynamics of the Universe in the relic densitycomputation. Furthermore a switch to include virtual vector bosons in the finalstates in the annihilation cross sections or relic density computations isadded. Effective operators to describe loop-induced couplings of Higgses totwo-photons or two-gluons are introduced and reduced couplings of the Higgs areprovided allowing for a direct comparison with recent LHC results. A modulethat computes the signature of DM captured in celestial bodies in neutrinotelescopes is also provided. Moreover the direct detection module has beenimproved as concerns the implementation of the strange "content" of thenucleon. New extensions of the standard model are included in the distribution.

micrOMEGAs3.1 : a program for calculating dark matter observables