A5047242818- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Galaxies: Formation, Evolution, Phenomena
- Advanced Mathematical Theories and Applications
- Relativity and Gravitational Theory
- Geophysics and Gravity Measurements
- Statistical Mechanics and Entropy
- Advanced Thermodynamics and Statistical Mechanics
Universitat de Barcelona
2023-2024
Sapienza University of Rome
2023
Abstract Primordial non-Gaussianity of the local type induces a strong scale-dependent bias on clustering halos in late-time Universe. This signature is particularly promising to provide constraints parameter f NL from galaxy surveys, as amplitude grows with scale and becomes important large, linear scales. However, there well-known degeneracy between real prize, parameter, (non-Gaussian) assembly i.e., halo formation history-dependent contribution signal, which could seriously compromise...
The latest data release from the ACT CMB experiment (in combination with previous WMAP data) shows evidence for an Early Dark Energy component at more than $3$ standard deviations. same conclusion has been recently shown to hold when temperature Planck limited intermediate angular scales ($l \le 650$) are included while it vanishes full dataset is considered. However, that exhibits anomalous lensing and a preference closed universe level of three deviation. It therefore utmost importance...
Abstract We present the results of a set cosmological N-body simulations with standard ΛCDM cosmology but characterized by scale-dependent primordial non-Gaussianity local type featuring power-law dependence f NL loc ( k ) at large scales followed saturation to constant value smaller where non-linear growth leads formation collapsed cosmic structures. Such models are built ensure consistency current Cosmic Microwave Background bounds on yet allowing for effects non-Gaussian statistics...
We present the results of a set cosmological N-body simulations with standard $\Lambda$CDM cosmology but characterized by scale-dependent primordial non-Gaussianity local type featuring power-law dependence $f_{\rm NL}^{\rm loc}(k)$ at large scales followed saturation to constant value smaller where non-linear growth leads formation collapsed cosmic structures. Such models are built ensure consistency current Cosmic Microwave Background bounds on yet allowing for effects non-Gaussian...
The latest data release from the ACT CMB experiment (in combination with previous WMAP data) shows evidence for an Early Dark Energy component at more than $3$ standard deviations. same conclusion has been recently shown to hold when temperature Planck limited intermediate angular scales ($l \le 650$) are included while it vanishes full dataset is considered. However, that exhibits anomalous lensing and a preference closed universe level of three deviation. It therefore utmost importance...