A5049472017- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- Black Holes and Theoretical Physics
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Particle accelerators and beam dynamics
- Geophysics and Gravity Measurements
- Radiation Detection and Scintillator Technologies
- Solar and Space Plasma Dynamics
- Relativity and Gravitational Theory
- Pulsars and Gravitational Waves Research
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Stellar, planetary, and galactic studies
- Muon and positron interactions and applications
- Computational Physics and Python Applications
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- International Science and Diplomacy
Instituto de Física Corpuscular
2016-2025
Universitat de València
2015-2024
Sapienza University of Rome
2007-2023
Parc Científic de la Universitat de València
2018-2023
Consejo Superior de Investigaciones Científicas
2009-2020
Rutherford Appleton Laboratory
2013
Unidades Centrales Científico-Técnicas
2012
Universidad Autónoma de Madrid
2000-2010
Fermi National Accelerator Laboratory
2004-2010
Durham University
2009-2010
We present a one per cent measurement of the cosmic distance scale from detections baryon acoustic oscillations (BAO) in clustering galaxies Baryon Oscillation Spectroscopic Survey, which is part Sloan Digital Sky Survey III. Our results come Data Release 11 (DR11) sample, containing nearly million and covering approximately 8500 square degrees redshift range 0.2 < |$z$| 0.7. also compare these with those publicly released DR9 DR10 samples. Assuming concordance Λ cold dark matter (ΛCDM)...
Abstract The simplest ΛCDM model provides a good fit to large span of cosmological data but harbors areas phenomenology and ignorance. With the improvement number accuracy observations, discrepancies among key parameters have emerged. most statistically significant tension is 4 σ 6 disagreement between predictions Hubble constant, H 0 , made by early time probes in concert with ‘vanilla’ model, late time, model-independent determinations from local measurements distances redshifts. high...
The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in clustering matter over a larger volume than combined efforts all previous spectroscopic surveys large-scale structure. BOSS uses 1.5 million luminous galaxies as faint i = 19.9 10,000 deg2 BAO redshifts z < 0.7. Observations neutral hydrogen Lyα forest more 150,000 quasar spectra (g 22) will constrain redshift range 2.15 3.5. Early results from include first detection...
We present measurements of galaxy clustering from the Baryon Oscillation Spectroscopic Survey (BOSS), which is part Sloan Digital Sky III (SDSS-III). These use Data Release 9 (DR9) CMASS sample, contains 264 283 massive galaxies covering 3275 square degrees with an effective redshift z = 0.57 and range 0.43 < 0.7. Assuming a concordance ΛCDM cosmological model, this sample covers volume 2.2 Gpc3, represents largest Universe ever surveyed at density, . measure angle-averaged correlation...
A bstract We present an updated global fit of neutrino oscillation data in the simplest three-neutrino framework. In study we include up-to-date analyses from a number experiments. Concerning atmospheric and solar sectors, besides considered previously, give IceCube DeepCore Sudbury Neutrino Observatory data, respectively. have also included latest electron antineutrino collected by Daya Bay RENO reactor experiments, long-baseline T2K NO ν measurements, as reported 2020 conference. All all,...
Using some of the latest cosmological datasets publicly available, we derive strongest bounds in literature on sum three active neutrino masses, $M_\nu$, within assumption a background flat $\Lambda$CDM cosmology. In most conservative scheme, combining Planck cosmic microwave (CMB) temperature anisotropies and baryon acoustic oscillations (BAO) data, as well up-to-date constraint optical depth to reionization ($\tau$), tightest $95\%$ confidence level (C.L.) upper bound find is...
The answer is Yes! We indeed find that interacting dark energy can alleviate the current tension on value of Hubble constant $H_0$ between Cosmic Microwave Background anisotropies constraints obtained from Planck satellite and recent direct measurements reported by Riess et al. 2016. combination these two datasets points towards an evidence for a non-zero matter-dark coupling $\xi$ at more than standard deviations, with $\xi=-0.26_{-0.12}^{+0.16}$ $95\%$ CL. However better solved when...
We explore whether nonstandard dark sector physics might be required to solve the existing cosmological tensions. The properties we consider in combination are (a) an interaction between matter and energy components (b) a equation of state $w$ different from that canonical constant $w=\ensuremath{-}1$. In principle, these two parameters independent. practice, avoid early-time, superhorizon instabilities, their allowed parameter spaces correlated. Moreover, clear degeneracy exists case cosmic...
We present measurements of the angular diameter distance to and Hubble parameter at z=0.57 from measurement baryon acoustic peak in correlation galaxies Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey. Our analysis is based on a sample Data Release 9 264,283 over 3275 square degrees redshift range 0.43<z<0.70. use two different methods provide robust position across along line sight order measure cosmological scale. find D_A(0.57) = 1408 +/- 45 Mpc H(0.57) 92.9 7.8...
We explore cosmological constraints on the sum of three active neutrino masses ${M}_{\ensuremath{\nu}}$ in context dynamical dark energy (DDE) models with equation state (EoS) parametrized as a function redshift $z$ by $w(z)={w}_{0}+{w}_{a}z/(1+z)$, and satisfying $w(z)\ensuremath{\ge}\ensuremath{-}1$ for all $z$. make use cosmic microwave background data from Planck satellite, baryon acoustic oscillation measurements, supernovae Ia luminosity distance perform Bayesian analysis. show that,...
The most recent measurements of the temperature and low-multipole polarization anisotropies Cosmic Microwave Background (CMB) from Planck satellite, when combined with galaxy clustering data Baryon Oscillation Spectroscopic Survey (BOSS) in form full shape power spectrum, Acoustic measurements, provide a $95\%$ confidence level (CL) upper bound on sum three active neutrinos $\sum m _\nu< 0.183$ eV, among tightest neutrino mass bounds literature, to date, same datasets are taken into account....
The ordering of the neutrino masses is a crucial input for deep understanding flavor physics, and its determination may provide key to establish relationship among lepton mixings their analogous properties in quark sector. extraction mass data-driven field expected evolve very rapidly next decade. In this review, we both analyze present status describe physics subsequent prospects. Firstly, different current available tools measure are described. Namely, reactor, long-baseline (accelerator...
We explore the role of redshift-space galaxy clustering data in constraining non-gravitational interactions between dark energy (DE) and matter (DM), for which state-of-the-art limits have so far been obtained from late-time background measurements. use joint likelihood pre-reconstruction full-shape (FS) power spectrum post-reconstruction Baryon Acoustic Oscillation (BAO) measurements BOSS DR12 sample, alongside Cosmic Microwave Background (CMB) \textit{Planck}: this dataset combination we...
We analyze a cosmological model featuring an interaction between dark energy and matter in light of the measurements Cosmic Microwave Background released by three independent experiments: most recent data Planck satellite Atacama Cosmology Telescope, WMAP (9-year data). show that different combinations datasets provide similar results, always favoring interacting sector with $95\%$~CL significance majority cases. Remarkably, such preference remains consistent when cross-checked through...
Abstract The very first light captured by the James Webb Space Telescope (JWST) revealed a population of galaxies at high redshifts more massive than expected in canonical ΛCDM model structure formation. Barring, among others, systematic origin issue, this paper, we test alternative cosmological perturbation histories. We argue that models with larger matter component Ω m and/or scalar spectral index n s can substantially improve fit to JWST measurements. In regard, phenomenological...
Abstract The recent DESI Baryon Acoustic Oscillation measurements have led to tight upper limits on the neutrino mass sum, potentially in tension with oscillation constraints requiring ∑ m ν ≳ 0.06 eV. Under physically motivated assumption of positive , we study extent which these are tightened by adding other available cosmological probes, and robustly quantify preference for normal ordering over inverted one, as well between terrestrial data. Combining data Cosmic Microwave Background...
The two dark sectors of the universe—dark matter and energy—may interact with each other. Background linear density perturbation evolution equations are developed for a generic coupling. We then establish general conditions necessary to obtain models free from non-adiabatic instabilities. As an application, we consider viable universe in which interaction strength is proportional energy density. scenario does not exhibit ``phantom crossing'' instabilities, including early ones. A sizeable...