The double focusing mass spectrometer (DFMS) of theROSINA (Rosetta Orbiter Spectrometer for Ion and Neutral Analysis)instrument on board Rosetta has enabled the discovery of a zoo ofneutral constituents in the coma of comet 67P/Churyumov-Gerasimenko.This talk will focus on halogen-bearing species in the coma andaddress their abundances, variability and isotopic composition.
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