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Four Fundamental Foreground Power Spectrum Shapes for 21 cm Cosmology Observations
Four Fundamental Foreground Power Spectrum Shapes Cosmology Observations
2012/2/24
Contamination from instrumental effects interacting with bright astrophysical sources is the primary impediment to measuring Epoch of Reionization and BAO 21 cm power spectra-an effect called mode-mix...
Redshift and distances in a ΛCDM cosmology with non-linear inhomogeneities
cosmology: theory, relativity, large-scale structure of Universe, super- novae: general
2011/10/13
In this paper we study the effects of inhomogeneities on light propagation in a flat {\Lambda}CDM background. To this end we use exact solutions of Einstein's equations (Meures & Bruni 2011) where, st...
Viscous Little Rip Cosmology
Viscous Little Rip Cosmology
2011/10/17
Dark energy of phantom or quintessence nature with an equation of state parameter $w$ almost equal to -1 often leads the universe evolution to a finite-time future singularity. An elegant solution to ...
Testing the WMAP cosmology via Planck radio catalogues
methods: analytical - galaxies: general - cosmic microwave background- cosmology large-scale structure of Universe
2011/10/9
The prime evidence underpinning the standard LCDM cosmological model is the CMB power spectrum as observed by WMAP and other microwave experiments. But Sawangwit and Shanks have recently shown that th...