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24 papers · 2 filters
Universal void density profiles from simulation and SDSS
S. Nadathur, S. Hotchkiss, J. M. Diego +4
We discuss the universality and self-similarity of void density profiles, for voids in realistic mock luminous red galaxy (LRG) catalogues from the Jubilee simulation, as well as i…
Resolving primordial physics through correlated signatures
Kari Enqvist, David J. Mulryne, Sami Nurmi
We discuss correlations among spectral observables as a new tool for differentiating between models for the primordial perturbation. We show that if generated in the isocurvature s…
Anisotropic CMB distortions from non-Gaussian isocurvature perturbations
Atsuhisa Ota, Toyokazu Sekiguchi, Yuichiro Tada +1
We calculate the CMB -distortion and the angular power spectrum of its cross-correlation with the temperature anisotropy in the presence of the non-Gaussian neutrino isocurvatur…
New test of the FLRW metric using the distance sum rule
Syksy Rasanen, Krzysztof Bolejko, Alexis Finoguenov
We present a new test of the validity of the Friedmann-Lemaitre-Robertson-Walker (FLRW) metric, based on comparing the distance from redshift 0 to and from to to…
Fitting BICEP2 with defects, primordial gravitational waves and dust
Joanes Lizarraga, Jon Urrestilla, David Daverio +3
In this work we discuss the possibility of cosmic defects being responsible for the B-mode signal measured by the BICEP2 collaboration. We also allow for the presence of other cosm…
Brightest X-ray clusters of galaxies in the CFHTLS wide fields: Catalog and optical mass estimator
M. Mirkazemi, A. Finoguenov, M. J. Pereira +13
The CFHTLS presents a unique data set for weak lensing studies, having high quality imaging and deep multi-band photometry. We have initiated an XMM-CFHTLS project to provide X-ray…