C. Baccigalupi
A5008169093- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Astronomy and Astrophysical Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Geophysics and Gravity Measurements
- Superconducting and THz Device Technology
- Stellar, planetary, and galactic studies
- Scientific Research and Discoveries
- Adaptive optics and wavefront sensing
- Pulsars and Gravitational Waves Research
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Solar and Space Plasma Dynamics
- Astrophysical Phenomena and Observations
- Black Holes and Theoretical Physics
- Astrophysics and Star Formation Studies
- Remote Sensing in Agriculture
- Relativity and Gravitational Theory
- Particle physics theoretical and experimental studies
- Computational Physics and Python Applications
- Statistical and numerical algorithms
- Precipitation Measurement and Analysis
- Calibration and Measurement Techniques
Trieste Astronomical Observatory
2011-2025
Institute for Fundamental Physics of the Universe
2019-2025
Scuola Internazionale Superiore di Studi Avanzati
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2016-2025
University of Trieste
2016-2025
Istituto Nazionale di Fisica Nucleare
2011-2025
National Institute for Astrophysics
2025
Institute for Physics
2024
Marconi University
2024
High Energy Accelerator Research Organization
2024
The Simons Observatory (SO) is a new cosmic microwave background experiment being built on Cerro Toco in Chile, due to begin observations the early 2020s. We describe scientific goals of experiment, motivate design, and forecast its performance. SO will measure temperature polarization anisotropy six frequency bands: 27, 39, 93, 145, 225 280 GHz. initial configuration have three small-aperture 0.5-m telescopes (SATs) one large-aperture 6-m telescope (LAT), with total 60,000 cryogenic...
We present the science case, reference design, and project plan for Stage-4 ground-based cosmic microwave background experiment CMB-S4.
This book lays out the scientific goals to be addressed by next-generation ground-based cosmic microwave background experiment, CMB-S4, envisioned consist of dedicated telescopes at South Pole, high Chilean Atacama plateau and possibly a northern hemisphere site, all equipped with new superconducting cameras. CMB-S4 will dramatically advance cosmological studies crossing critical thresholds in search for B-mode polarization signature primordial gravitational waves, determination number...
Abstract CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding origin evolution universe. Among science cases pursued with CMB-S4, quest for detecting primordial gravitational waves is a central driver experimental design. This work details development forecasting framework that includes power-spectrum-based semianalytic projection tool, targeted explicitly toward...
We present a new, updated version of the EuclidEmulator (called EuclidEmulator2), fast and accurate predictor for nonlinear correction matter power spectrum. Percent-level emulation is now supported in eight-dimensional parameter space $w_0w_a$CDM$+\sum m_\nu$models between redshift $z=0$ $z=3$ spatial scales within range 0.01 $h$/Mpc $\leq k \leq$ 10 $h$/Mpc. In order to achieve this level accuracy, we have had improve quality underlying N-body simulations used as training data: (1) use...
will provide deep near-infrared (NIR) imaging to ∼26.5 AB magnitude over ∼59 deg^2 in its and auxiliary fields. The Cosmic DAWN survey combines dedicated archival UV--NIR observations matched depth multiwavelength of the consistently measured NIR-selected photometric catalogues, accurate redshifts, measurements galaxy properties a redshift z∼ 10. catalogues include Spitzer IRAC data that are critical for stellar mass at z ≳ 2.5 high-z science. These complement standard which not data. In...
We study the concentration parameters, their mass dependence and redshift evolution, of dark-matter halos in different dark-energy cosmologies with constant time-variable equation state, compare them "standard" ΛCDM OCDM models. find that previously proposed algorithms for predicting halo concentrations can be well adapted to When centred on analytically expected values, show a log-normal distribution uniform standard deviation ~0.2. The averaged permits simple fit form , throughout. cluster...
The case of a coupling between dark energy and matter [coupled quintessence (CQ)] or gravity [extended (EQ)] has recently attracted deep interest been widely investigated both in the Einstein Jordan frames (EF, JF), within scalar-tensor theories. Focusing on simplest models proposed so far, this paper we study relation existing two scenarios, isolating Weyl scaling which allows one to express them EF JF. Moreover, perform comparative behavior linear perturbations turn out behave markedly...
Abstract We report an improved measurement of the cosmic microwave background B -mode polarization power spectrum with Polarbear experiment at 150 GHz. By adding new data collected during second season observations (2013–2014) to re-analyzed from first (2012–2013), we have reduced twofold band-power uncertainties. The band powers are reported over angular multipoles , where dominant signal is expected be due gravitational lensing E -modes. reject null hypothesis no a confidence 3.1 σ...
We constrain anisotropic cosmic birefringence using four-point correlations of even-parity $E$-mode and odd-parity $B$-mode polarization in the microwave background measurements made by POLARization Background Radiation (POLARBEAR) experiment its first season observations. find that signal from any parity-violating processes is consistent with zero. The Faraday rotation can be compared equivalent quantity generated primordial magnetic fields if they existed. POLARBEAR nondetection translates...
We investigate the possibility of measuring primordial gravitational wave (GW) signal across 21 decades in frequencies, using cosmic microwave background (CMB), pulsar timing arrays (PTA), and laser atomic interferometers. For CMB PTA experiments we consider LiteBIRD mission Square Kilometer Array (SKA), respectively. interferometers space proposals including Laser Interferometer Space Antenna (LISA), Big Bang Observer (BBO), Deci-hertz Gravitational Observatory (DECIGO), $\mu$Ares...
The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) experiment sited on Cerro Toco in the Atacama Desert Chile that promises to provide breakthrough discoveries fundamental physics, cosmology, and astrophysics. Supported by Foundation, Heising-Simons with contributions from collaborating institutions, SO will see first light 2021 start five year survey 2022. has 287 collaborators 12 countries 53 including 85 students 90 postdocs. its currently funded form...
We have analyzed the southern sky emission in linear polarization at 2.3 GHz as observed by S -band Polarization All Sky Survey ( S-PASS ). Our purpose is to study properties of diffuse Galactic polarized synchrotron a contaminant B -mode observations cosmic microwave background (CMB) polarization. studied angular distribution signal intermediate and high latitudes means power spectra. The spectra, computed multipole interval 20 ≤ ℓ 1000, show decay spectral amplitude function for ≲ 200,...
This paper presents the specification, design, and development of Visible Camera (VIS) on European Space Agency's mission. VIS is a large optical-band imager with field view 0.54 deg$^2$ sampled at an array 609 Megapixels spatial resolution . It will be used to survey approximately 14 000 extragalactic sky measure distortion galaxies in redshift range $z=0.1$--1.5 resulting from weak gravitational lensing, one two principal cosmology probes leveraged by With photometric redshifts,...
Abstract We study the possibility of using LiteBIRD satellite B -mode survey to constrain models inflation producing specific features in CMB angular power spectra. explore a particular model example, i.e. spectator axion-SU(2) gauge field inflation. This can source parity-violating gravitational waves from amplification fluctuations driven by pseudoscalar “axionlike” field, rolling for few e-folds during The sourced exceed vacuum contribution at reionization bump scales about an order...
Abstract We estimate the efficiency of mitigating lensing B -mode polarization, so-called delensing, for LiteBIRD experiment with multiple external data sets lensing-mass tracers. The current best bound on tensor-to-scalar ratio, r , is limited by rather than Galactic foregrounds. Delensing will be a critical step to improve sensitivity as measurements become more and lensing. In this paper, we extend analysis recent forecast paper include mass tracers, i.e., CMB maps from CMB-S4-like...
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...