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Is it the paper David H pointed out, by Geringer-Sameth et al. (2015)? If so, then I should point out that they're not the first. Just using Wikipedia, I came across Weniger (2012) and Albert et al. (2008). Geringer-Sameth et al.'s abstract reads (in part) We present a search for gamma-ray emission from the direction of the newly discovered dwarf galaxy ...


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Well, there are microlensing experiments, the results of which have largely removed MACHOs as a significant source of Dark Matter. The background field of stars is usually a nearby galaxy (a Magellanic cloud one or Andromeda, say), or the galactic bulge, and the experiment looks for lensing objects between us and there. In particular, they're pretty much ...



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