Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ferramacho, Luis"'
We explore the use of different radio galaxy populations as tracers of different mass halos and therefore, with different bias properties, to constrain primordial non-Gaussianity of the local type. We perform a Fisher matrix analysis based on the pre
Externí odkaz:
http://arxiv.org/abs/1402.2290
Publikováno v:
PRL 111, 171302 (2013)
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 neutral hydrogen HI at redshifts z~1-5 are the best hope of accessing
Externí odkaz:
http://arxiv.org/abs/1305.6928
Autor:
Ferramacho, Luis, Blanchard, Alain
Publikováno v:
Astronomy & Astrophysics, Volume 533, id.A45 (2011)
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 from the BAX database for X-ray clusters. The Sunyaev-Zeldovich signal
Externí odkaz:
http://arxiv.org/abs/1105.3680
Publikováno v:
Phys.Rev.Lett.107:131304,2011
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 epoch of reionization. We focus on the power spectrum on large scales at
Externí odkaz:
http://arxiv.org/abs/1105.1773
Autor:
Bugalho, Ricardo, Di Francesco, Agostino, Ferramacho, Luis, Leong, Carlos, Niknejad, Tahereh, Oliveira, Luis, Pacher, Luca, Rolo, Manuel, Rivetti, Angelo, Silveira, Miguel, Silva, Jose C., Silva, Rui, Tavernier, Stefaan, Varela, Joao
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 21 December 2018 912:195-198
Autor:
Ferramacho, Luis, Blanchard, Alain
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 sample of distant clusters observed by XMM-Newton and Chandra, and comp
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609822
Autor:
Niknejad, Tahereh, Pizzichemi, Marco, Stringhini, Gianluca, Auffray, Etiennette, Bugalho, Ricardo, Da Silva, Jose Carlos, Di Francesco, Agostino, Ferramacho, Luis, Lecoq, Paul, Leong, Carlos, Paganoni, Marco, Rolo, Manuel, Silva, Rui, Silveira, Miguel, Tavernier, Stefaan, Varela, Joao, Zorraquino, Carlos
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 11 February 2017 845:684-688