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Search for Compensated Isocurvature Perturbations with Planck Power Spectra
Julian B. Muñoz, Daniel Grin, Liang Dai +2
In the standard inflationary scenario, primordial perturbations are adiabatic. The amplitudes of most types of isocurvature perturbations are generally constrained by current data…
Heating of Baryons due to Scattering with Dark Matter During the Dark Ages
Julian B. Muñoz, Ely D. Kovetz, Yacine Ali-Haïmoud
We explore the effects of elastic scattering between dark matter and baryons on the 21-cm signal during the dark ages. In particular, we consider a dark-matter---baryon interaction…
Primordial non-gaussianity from the bispectrum of 21-cm fluctuations in the dark ages
Julian B. Muñoz, Yacine Ali-Haïmoud, Marc Kamionkowski
A measurement of primordial non-gaussianity will be of paramount importance to distinguish between different models of inflation. Cosmic microwave background (CMB) anisotropy obser…