2005-10-06

fabulous, galaxies as vectors, sterile neutrinos

I worked more on my review paper.

Blanton, Quintero, and I discussed a project on the vector field described by galaxy dipole moments (eg, the vector offsets between the centroid of the bulge and disk, or old stars and new). It is interesting, because some investigators, including Vogt et al, find that galaxy asymmetries are related to the direction to the nearest rich cluster.

Mikhail Shaposhnikov gave a nice talk on a dark matter model employing very weakly interacting sterile neutrinos. Interestingly, large parts of this parameter space could be ruled out by very high (spectral) resolution x-ray spectroscopy, because generically sterile neutrinos will have decay pathways to the standard neutrinos, emitting a photon.

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  2. Perhaps Shaposhnikov and I can compare research into sterile neutrinos. My own work on neutrino flavor oscillation has uncovered evidence of three new flavors: neutrino garcia, neutrino fudge brownie, and the tantalizing neutrinos de leche.

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