Particle and Astro-Particle Physics Seminars

Measurement of H_0 from the BOSS Galaxy Power Spectrum

by Marko Simonovic

Europe/Zurich
4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

100
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Description

I will present cosmological parameter measurements from the publicly available Baryon Oscillation Spectroscopic Survey (BOSS) data on anisotropic galaxy clustering in Fourier space. In particular I will focus on H_0 measurement. Assuming a minimal $\Lambda$CDM cosmology with varied massive neutrinos, fixing the primordial power spectrum tilt, and imposing the big bang nucleosynthesis (BBN) prior on the physical baryon density $\omega_b$, the measured late-Universe parameters are: Hubble constant H_0 = 67.89 +/- 1.06 km/s/Mpc, matter density fraction \Omega_m = 0.295 +/- 0.010, and the mass fluctuation amplitude \sigma_8 = 0.721 +/- 0.043. These parameters were measured directly from the BOSS data and independently of the Planck cosmic microwave background observations.