Thursday, September 29, 2011

Day 94

Friday.  NO APARTMENT.  I am going to have to extend my homeless-ness by living in a hotel for another month.  Yesterday, Peter came into my office with an printout of an e-mail about two new OU-LE3 units for Euclid in Germany (Bonn & Munich).  I wasn't quite sure what he wanted me to do with this information, but if he wants me to be the LE3 lead... that would be awesome.  


1109.6322
Searching for DM in the CMB: a compact parameterization of energy injection from New Physics
Finkbeiner, Galli, Lin, Slatyer


CMB anisotropy set robust constraints on DM annihilation during recombination.  Improve and generalize these constraints to apply to energy deposition during the recombination era with arbitrary redshift dependence [what redshift dependence did it have before?].  This approach also provides more rigorous and model-independent bounds on DM annihilation and decay scenarios.  Employ principal component analysis to identify a basis of weighting functions for the energy deposition.  Coefficients of these weighting functions parameterize any energy deposition model, and can be constrained directly by experiment.  For generic energy deposition histories that are currently allowed by WMAP7 data, up to 3 principal component coefficients are measurable by Planck and up to 5 by an ideal cosmic variance limited experiment.  For WIMP dark matter, analysis demonstrates that the effect on the CMB is described well by a single (normalization) parameter, and a "universal" redshift dependence for the energy deposition history.  Give WMAP7 constraints on both generic energy deposition histories and the universal WIMP case.


* what were the results for WMAP7?


1109.6323
The road to the red sequence: a detailed view of the formation of a "red and dead" massive galaxy at z~2
Ferreras, Pasquali, Khochfar, Kuntschner, Kuemmel, Pirzkal, Windhorst, Malhotra, Rhoads, O'Connel


Spectral, morphological analysis of a star formation history in a particular galaxy.  Imply cold accretion at high-z fueled efficienet star formation, subsequently stopped either by onset of a SNe-driven galactic wind, or by the merger that caused its present morphology.  Implies that major mergers themselves induce the truncation of star formation in massive galaxies.

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