E. Branchini
A5089646646- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Cosmology and Gravitation Theories
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Astronomical Observations and Instrumentation
- Scientific Research and Discoveries
- Dark Matter and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Adaptive optics and wavefront sensing
- Radio Astronomy Observations and Technology
- Astrophysics and Star Formation Studies
- Remote Sensing in Agriculture
- Impact of Light on Environment and Health
- Geophysics and Gravity Measurements
- History and Developments in Astronomy
- Gaussian Processes and Bayesian Inference
- CCD and CMOS Imaging Sensors
- Calibration and Measurement Techniques
- Spectroscopy and Chemometric Analyses
- Particle Detector Development and Performance
- Statistical and numerical algorithms
- Particle physics theoretical and experimental studies
- Advanced Vision and Imaging
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2022-2025
University of Genoa
2022-2025
Brera Astronomical Observatory
2011-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre
2015-2024
University of Copenhagen
2024
Flatiron Health (United States)
2024
Flatiron Institute
2024
Royal Holloway University of London
2024
University of California, Davis
2024
University College London
2024
This White Paper, submitted to the recent ESA call for science themes define its future large missions, advocates need a transformational leap in our understanding of two key questions astrophysics: 1) How does ordinary matter assemble into scale structures that we see today? 2) do black holes grow and shape Universe? Hot gas clusters, groups intergalactic medium dominates baryonic content local Universe. To understand astrophysical processes responsible formation assembly these structures,...
The Euclid space telescope will measure the shapes and redshifts of galaxies to reconstruct expansion history Universe growth cosmic structures. Estimation expected performance experiment, in terms predicted constraints on cosmological parameters, has so far relied different methodologies numerical implementations, developed for observational probes their combination. In this paper we present validated forecasts, that combine both theoretical expertise probes. This is presented provide...
We describe the construction and general features of VIPERS, VIMOS Public Extragalactic Redshift Survey. This `Large Programme' has been using ESO VLT with aim building a spectroscopic sample ~100,000 galaxies i_{AB}<22.5 0.5
We present in this paper the general real- and redshift-space clustering properties of galaxies as measured first data release VIPERS survey. is a large redshift survey designed to probe distant Universe its large-scale structure at 0.5 < z 1.2. describe analysis global sample discuss completeness associated corrections. This allows us measure galaxy with an unprecedented accuracy these redshifts. From distortions observed pattern we provide measurement growth rate = 0.8: f\sigma_8 0.47 +/-...
Euclid is an ESA mission designed to constrain the properties of dark energy and gravity via weak gravitational lensing galaxy clustering. It will carry out a wide area imaging spectroscopy survey (EWS) in visible near-infrared, covering roughly 15,000 square degrees extragalactic sky on six years. The wide-field telescope instruments are optimized for pristine PSF reduced straylight, producing very crisp images. This paper presents building reference survey: sequence pointings EWS, Deep...
We present the first Public Data Release (PDR-1) of VIMOS Extragalactic Survey (VIPERS). It comprises 57 204 spectroscopic measurements together with all additional information necessary for optimal scientific exploitation data, in particular associated photometric and quantification survey completeness. VIPERS is an ESO Large Programme designed to build a sample ' 100 000 galaxies iAB < 22.5 0.5 z 1.5 high sampling rate (~45%). The targets are selected from CFHTLS-Wide five-band catalogues...
We present the full public data release (PDR-2) of VIMOS Public Extragalactic Redshift Survey (VIPERS), performed at ESO VLT. redshifts, spectra, CFHTLS magnitudes and ancillary information (as masks weights) for a complete sample 86 775 galaxies (plus 4732 other objects, including stars serendipitous galaxies); we also include their photometrically-selected parent catalogue. The is magnitude limited to i AB ≤ 22.5, with an additional colour-colour pre-selection devised as exclude z <...
We present measurements of the growth rate cosmological structure from modelling anisotropic galaxy clustering measured in final data release VIPERS survey. The analysis is carried out configuration space and based on first two even multipole moments auto-correlation function, redshift bins spanning range $0.5 < z 1.2$. provide robust cosmology-independent corrections for angular selection allowing recovery underlying amplitude at percent level down to Mpc scale. discuss several improvements...
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...
By using a suite of large box-size N-body simulations that incorporate massive neutrinos as an extra set particles, we investigate the impact neutrino masses on spatial distribution dark matter haloes and galaxies. We compute bias between overall cold distributions statistical tools such power spectrum two-point correlation function. Overall find scale-dependent scales for cosmologies with neutrinos. However, our results indicate scale-dependence in is reduced if latter computed respect to...
We study the prospects for detecting annihilation products of dark matter (DM) in framework two highest-resolution numerical simulations currently available, i.e., Via Lactea II and Aquarius. propose a strategy to determine shape size region around Galactic center that maximizes probability observing DM signal, we show that, although predicted flux can differ by factor 10 given candidate simulation setups, search remains actually unchanged, since it relies on angular profile flux, not its...
We present new constraints on the relationship between galaxies and their host dark matter haloes, measured from location of peak stellar-to-halo mass ratio (SHMR), up to most massive galaxy clusters at redshift z ∼ 0.8 over a volume nearly 0.1 Gpc3. use unique combination deep observations in CFHTLenS/VIPERS field near-UV near-IR, supplemented by ∼60 000 secure spectroscopic redshifts, analysing clustering, galaxy–galaxy lensing stellar function. interpret our measurements within halo...
The description of the abundance and clustering haloes for non-Gaussian initial conditions has recently received renewed interest, motivated by forthcoming large galaxy cluster surveys, which can potentially yield constraints order unity on non-Gaussianity parameter fNL. We present tests N-body simulations analytical formulae describing halo conditions. calibrate analytic mass function Matarrese, Verde & Jimenez LoVerde et al. simulations. find an excellent agreement between predictions if...
We measure the evolution of galaxy stellar mass function from z=1.3 to z=0.5 using first 53,608 redshifts ongoing VIMOS Public Extragalactic Survey (VIPERS). estimate at several epochs discussing in detail amount cosmic variance affecting our estimate. find that Poisson noise and VIPERS survey are comparable with statistical uncertainties large surveys local universe. data allow us determine unprecedented accuracy high-mass tail function, which includes a significant number galaxies usually...
Aims. We investigate the dependence of galaxy clustering on luminosity and stellar mass in redshift range 0.5 < z 1.1, using first ~ 55 000 redshifts from VIMOS Public Extragalactic Redshift Survey (VIPERS).
We present the first quantitative detection of large-scale filamentary structure at $z \simeq 0.7$ in large cosmological volume probed by VIMOS Public Extragalactic Redshift Survey (VIPERS). use simulations to show capability VIPERS recover robust topological features galaxy distribution, particular network. then investigate how galaxies with different stellar masses and activities are distributed around filaments find a significant segregation, most massive or quiescent being closer...