Publications (4)
Primordial non-Gaussianity from the 21 cm Power Spectrum during the Epoch of Reionization
Shahab Joudaki, Olivier Dore, Luis Ferramacho +2
Primordial non-Gaussianity is a crucial test of inflationary cosmology. We consider the impact of non-Gaussianity on the ionization power spectrum from 21 cm emission during the ep…
Cosmology on Ultralarge Scales with Intensity Mapping of the Neutral Hydrogen 21 cm Emission: Limits on Primordial Non-Gaussianity
Stefano Camera, Mario G. Santos, Pedro G. Ferreira +1
The large-scale structure of the Universe supplies crucial information about the physical processes at play at early times. Unresolved maps of the intensity of 21 cm emission from…
Gas mass fraction from XMM-Newton and Chandra high redshift clusters and its use as a cosmological test
Luis Ferramacho, Alain Blanchard
We investigate the cosmological test based on the evolution of the gas fraction in X-ray galaxy clusters and the stability of the cosmological parameters derived from it. Using a s…
Testing for evolution in scaling relations of galaxy clusters: Cross analysis between X-ray and SZ observations
Luis Ferramacho, Alain Blanchard
We present predicted Sunyaev-Zeldovich (SZ) properties of known X-ray clusters of galaxies for which gas temperature measurements are available. The reference sample was compiled f…