Publications (12)
Magnification bias as a novel probe for primordial magnetic fields
Stefano Camera, Cosimo Fedeli, Lauro Moscardini
In this paper we investigate magnetic fields generated in the early Universe. These fields are important candidates at explaining the origin of astrophysical magnetism observed in…
The clustering of galaxies and galaxy clusters: constraints on primordial non-Gaussianity from future wide-field surveys
Cosimo Fedeli, Carmelita Carbone, Lauro Moscardini +1
We investigate the constraints on primordial non-Gaussianity with varied bispectrum shapes that can be derived from the power spectrum of galaxies and clusters of galaxies detected…
Neglecting Primordial non-Gaussianity Threatens Future Cosmological Experiment Accuracy
Stefano Camera, Carmelita Carbone, Cosimo Fedeli +1
Future galaxy redshift surveys aim at probing the clustering of the cosmic large-scale structure with unprecedented accuracy, thus complementing cosmic microwave background experim…
The strongest gravitational lenses: I. The statistical impact of cluster mergers
Matthias Redlich, Matthias Bartelmann, Jean-Claude Waizmann +1
For more than a decade now, it has been controversial whether or not the high rate of giant gravitational arcs and the largest observed Einstein radii are consistent with the stand…
Probing primordial features with future galaxy surveys
Mario Ballardini, Fabio Finelli, Cosimo Fedeli +1
We study the capability of future measurements of the galaxy clustering power spectrum to probe departures from a power-law spectrum for primordial fluctuations. On considering the…
Substructure lensing in galaxy clusters as a constraint on low-mass sterile neutrinos in tensor-vector-scalar theory: The straight arc of Abell 2390
Martin Feix, HongSheng Zhao, Cosimo Fedeli +2
Certain covariant theories of the modified Newtonian dynamics paradigm seem to require an additional hot dark matter (HDM) component - in the form of either heavy ordinary neutrino…
Strong lensing in the MareNostrum Universe: biases in the cluster lens population
Massimo Meneghetti, Cosimo Fedeli, Francesco Pace +2
Strong lensing is one of the most direct probes of the mass distribution in the inner regions of galaxy clusters. It can be used to constrain the density profiles and to measure th…
Lensing dispersion of supernova flux: a probe of nonlinear structure growth
Cosimo Fedeli, Lauro Moscardini
The scatter in the apparent magnitude of type Ia supernovae induced by stochastic gravitational lensing is highly dependent on the nonlinear growth of cosmological structure. In th…
Comparison of weak lensing by NFW and Einasto halos and systematic errors
Mauro Sereno, Cosimo Fedeli, Lauro Moscardini
Recent N-body simulations have shown that Einasto radial profiles provide the most accurate description of dark matter halos. Predictions based on the traditional NFW functional fo…
The clustering of baryonic matter. I: a halo-model approach
Cosimo Fedeli
In this paper I generalize the halo model for the clustering of dark matter in order to produce the power spectra of the two main baryonic matter components in the Universe: stars…
Measuring the neutrino mass from future wide galaxy cluster catalogues
Carmelita Carbone, Cosimo Fedeli, Lauro Moscardini +1
We present forecast errors on a wide range of cosmological parameters obtained from a photometric cluster catalogue of a future wide-field Euclid-like survey. We focus in particula…
IDCS J1426.5+3508: Cosmological implications of a massive, strong lensing cluster at Z = 1.75
Anthony H. Gonzalez, S. A. Stanford, Mark Brodwin +6
The galaxy cluster IDCS J1426.5+3508 at z = 1.75 is the most massive galaxy cluster yet discovered at z > 1.4 and the first cluster at this epoch for which the Sunyaev-Zel'Dovich e…