12-14 December 2018
Casa de la Ciencia del CSIC
Europe/Madrid timezone

Cosmic neutrinos vs. galactic feedback

14 Dec 2018, 15:40


Mr. Gabriele Parimbelli (SISSA)


Massive neutrinos and baryon feedback both suppress the matter power spectrum at small scales and are therefore expected to be degenerate with each other. I will show that this degeneracy is not perfect and can indeed be broken by performing tomography on the cold dark matter and shear power spectra. Neutrino effects and non-linearities are included through fitting functions to N-body simulations, while for baryon feedback I employ the Baryon Correction Model, whose parameters have well-established physical meaning. In the last part I also include the intrinsic alignment effect in weak lensing and show that not even this systematic will likely bias the measurement on neutrino mass.

Primary author

Mr. Gabriele Parimbelli (SISSA)

Presentation Materials

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