A5075398458- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Superconducting and THz Device Technology
- Astrophysics and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- Dark Matter and Cosmic Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Scientific Research and Discoveries
- Geophysics and Gravity Measurements
- Astronomical Observations and Instrumentation
- Solar and Space Plasma Dynamics
- Astrophysical Phenomena and Observations
- Atmospheric Ozone and Climate
- Gamma-ray bursts and supernovae
- Physics of Superconductivity and Magnetism
- Adaptive optics and wavefront sensing
- Advanced Thermodynamic Systems and Engines
- Calibration and Measurement Techniques
- Radioactive Decay and Measurement Techniques
- Spacecraft and Cryogenic Technologies
- Relativity and Gravitational Theory
- Computational Physics and Python Applications
- Spectroscopy and Laser Applications
Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca
2020-2024
University of Milano-Bicocca
2018-2024
Istituto Nazionale di Fisica Nucleare
2008-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2022
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2009-2022
Laboratoire AstroParticule et Cosmologie
2020-2022
Université Paris Cité
2022
Centre National de la Recherche Scientifique
2020-2022
National University of Ireland
2022
University of Pennsylvania
2015-2020
We present new arcminute-resolution maps of the Cosmic Microwave Background temperature and polarization anisotropy from Atacama Cosmology Telescope, using data taken 2013-2016 at 98 150 GHz. The cover more than 17,000 deg$^2$, deepest 600 deg$^2$ with noise levels below 10 $\mu$K-arcmin. use power spectrum derived almost 6,000 these to constrain cosmology. ACT enable a measurement angular scale features in both divergence-like anisotropy, tracing velocity density last-scattering. From one...
We present the temperature and polarization angular power spectra of CMB measured by Atacama Cosmology Telescope (ACT) from 5400 deg$^2$ 2013-2016 survey, which covers $>$15000 at 98 150 GHz. For this analysis we adopt a blinding strategy to help avoid confirmation bias and, related this, show numerous checks for systematic error done before unblinding. Using likelihood cosmological constrain secondary sources anisotropy foreground emission, derive "CMB-only" spectrum that extends...
PRISM (Polarized Radiation Imaging and Spectroscopy Mission) was proposed to ESA in May 2013 as a large-class mission for investigating within the framework of Cosmic Vision program set important scientific questions that require high resolution, sensitivity, full-sky observations sky emission at wavelengths ranging from millimeter-wave far-infrared. PRISM's main objective is explore distant universe, probing cosmic history very early times until now well structures, distribution matter,...
We present the temperature and polarization angular power spectra measured by Atacama Cosmology Telescope Polarimeter (ACTPol). analyze night-time data collected during 2013-14 using two detector arrays at 149 GHz, from 548 deg$^2$ of sky on celestial equator. use these spectra, with MBAC camera ACT 2008-10, in combination Planck WMAP to estimate cosmological parameters temperature, polarization, temperature-polarization cross-correlations. find new ACTPol be consistent LCDM model. The...
The imprint left on the cosmic microwave background (CMB) from CMB photons scattering off high-energy electrons in galaxies and clusters is known as Sunyaev-Zel'dovich (SZ) effect subject of these two papers Atacama Cosmology Telescope (ACT). ACT measurements combined with those Planck BOSS are shown to provide a rich picture electron gas thermodynamics galactic cluster medium. This can be used test improve cosmological simulations relevant for upcoming experiments.
The early dark energy (EDE) scenario aims to increase the value of Hubble constant (${H}_{0}$) inferred from cosmic microwave background (CMB) data over that found in standard cosmological model ($\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$), via introduction a new form density Universe. EDE component briefly accelerates expansion just prior recombination, which reduces physical size sound horizon imprinted CMB. Previous work has nonzero is not preferred by Planck CMB power spectrum alone,...
COrE (Cosmic Origins Explorer) is a fourth-generation full-sky, microwave-band satellite recently proposed to ESA within Cosmic Vision 2015-2025. will provide maps of the microwave sky in polarization and temperature 15 frequency bands, ranging from 45 GHz 795 GHz, with an angular resolution 23 arcmin (45 GHz) 1.3 (795 sensitivities roughly 10 30 times better than PLANCK (depending on channel). The mission lead breakthrough science wide range areas, primordial cosmology galactic...
The Atacama Cosmology Telescope (ACT) is designed to make high angular resolution measurements of anisotropies in the Cosmic Microwave Background (CMB) at millimeter wavelengths. We describe ACTPol, an upgraded receiver for ACT, which uses feedhorn-coupled, polarization-sensitive detector arrays, a 3 degree field view, 100 mK cryogenics with continuous cooling, and meta material anti-reflection coatings. ACTPol comprises three arrays separate cryogenic optics: two central frequency 148 GHz...
We report a measurement of the power spectrum cosmic microwave background (CMB) lensing from two seasons Atacama Cosmology Telescope Polarimeter (ACTPol) CMB data. The is extracted both temperature and polarization data using quadratic estimators. obtain results that are consistent with expectation best-fit Planck LCDM model over range multipoles L=80-2100, an amplitude A_lens = 1.06 +/- 0.15 (stat.) 0.06 (sys.) relative to Planck. Our gives sigma_8 Omega_m^0.25 0.643 0.054; including baryon...
We use microwave temperature maps from two seasons of data the Atacama Cosmology Telescope (ACTPol) at 146 GHz, together with Constant Mass CMASS galaxy sample Baryon Oscillation Spectroscopic Survey to measure kinematic Sunyaev-Ze\v{l}dovich (kSZ) effect over redshift range z = 0.4 - 0.7. positions and continuity equation obtain a reconstruction line-of-sight velocity field. stack cosmic background location each halo, weighted by corresponding reconstructed velocity. The resulting best fit...
The thermal and kinematic Sunyaev-Zel'dovich effects (tSZ, kSZ) probe the thermodynamic properties of circumgalactic intracluster medium (CGM ICM) galaxies, groups, clusters, since they are proportional, respectively, to integrated electron pressure momentum along line-of-sight. We present constraints on gas thermodynamics CMASS galaxies in Baryon Oscillation Spectroscopic Survey (BOSS) using new measurements kSZ tSZ signals obtained a companion paper. Combining measurements, we measure...
We present a catalog of 182 galaxy clusters detected through the Sunyaev-Zel'dovich effect by Atacama Cosmology Telescope in contiguous 987.5 deg$^{2}$ field. The were as SZ decrements applying matched filter to 148 GHz maps that combine original ACT equatorial survey with data from first two observing seasons using ACTPol receiver. Optical/IR confirmation and redshift measurements come combination large public surveys our own follow-up observations. Where necessary, we measured photometric...
We construct cosmic microwave background lensing mass maps using data from the 2014 and 2015 seasons of observations with Atacama Cosmology Telescope (ACT). These cover 2100 square degrees sky overlap a wide variety optical surveys. The are signal dominated on large scales have fidelity such that their correlation infrared is clearly visible by eye. also create thermal Sunyaev-Zel'dovich contamination removed novel cleaning procedure only slightly degrades signal-to-noise ratio....
Optimal analyses of many signals in the cosmic microwave background (CMB) require map-level extraction individual components sky, rather than measurements at power spectrum level alone. To date, nearly all component separation CMB has been performed exclusively using satellite data. In this paper, we implement a method based on internal linear combination (ILC) approach which have designed to optimally account for anisotropic noise (in 2D Fourier domain) often found ground-based experiments....
This paper presents a maximum-likelihood algorithm for combining sky maps with disparate coverage, angular resolution and spatially varying anisotropic noise into single map of the sky. We use this to merge hundreds individual covering 2008-2018 ACT observing seasons, resulting in by far deepest released so far. also combine full Planck maps, that have best features both ACT: Planck's nearly white on intermediate large scales ACT's high-resolution sensitivity small scales. The cover over...
We present a measurement of the cross-correlation between MagLim galaxies selected from Dark Energy Survey (DES) first three years observations (Y3) and cosmic microwave background (CMB) lensing Atacama Cosmology Telescope (ACT) Data Release 4 (DR4), reconstructed over $\sim 436$ sq.deg. sky. Our galaxy sample, which covers 4143$ sq.deg., is divided into six redshift bins spanning range $0.20<z<1.05$. adopt blinding procedure until passing all consistency systematics tests. After imposing...
The upcoming Simons Observatory Small Aperture Telescopes aim at achieving a constraint on the primordial tensor-to-scalar ratio $r$ level of $\sigma(r=0)\lesssim0.003$, observing polarized CMB in presence partial sky coverage, cosmic variance, inhomogeneous non-white noise, and Galactic foregrounds. We present three different analysis pipelines able to constrain given latest available instrument performance, compare their predictions set simulations that allow us explore number foreground...
We analyze the cosmological constraints that Archeops (Benoît et al. 2003) places on adiabatic cold dark matter models with passive power-law initial fluctuations.Because its angular power spectrum has small bins in and large coverage down to COBE scales, provides a precise determination of first acoustic peak terms position at multipole l = 220 ± 6, height width.An analysis data combination other CMB datasets constrains baryon content Universe, Ω b h 2 0.022 +0.003 -0.004 , compatible...
The cosmic
We present the BOOMERanG-03 experiment and maps of Stokes parameters I, Q, U microwave sky obtained during a 14 day balloon flight in 2003. Three regions southern were surveyed: deep survey (~ 90 square degrees) shallow 750 at high Galactic latitudes (both centered RA ~ 5.5 h, dec -45 deg) 300 degrees across plane 9.1 -47 deg. All three surveys carried out wide frequency bands 145, 245 345 GHz, with an angular resolution 10'. The 145 GHz I are dominated by Cosmic Microwave Background (CMB)...
We present evidence of the gravitational lensing cosmic microwave background by 10(13) solar mass dark matter halos. Lensing convergence maps from Atacama Cosmology Telescope Polarimeter (ACTPol) are stacked at positions around 12 000 optically selected CMASS galaxies SDSS-III/BOSS survey. The mean signal is consistent with simulated halo profiles and favored over a null 3.2σ significance. This result demonstrates potential to probe distribution in galaxy group cluster
We present a new measurement of the kinematic Sunyaev-Zel'dovich effect using data from Atacama Cosmology Telescope (ACT) and Baryon Oscillation Spectroscopic Survey (BOSS). Using 600 square degrees overlapping sky area, we evaluate mean pairwise baryon momentum associated with positions 50,000 bright galaxies in BOSS DR11 Large Scale Structure catalog. A non-zero signal arises large-scale motions halos containing sample galaxies. The fits an analytical model well, optical depth to microwave...