output
19922026
Showing 2024 · astro-ph.COShow all

25 papers · 2 filters

astro-ph.CO2024★ 2 cited

Euclid: Field-level inference of primordial non-Gaussianity and cosmic initial conditions

A. Andrews, J. Jasche, G. Lavaux +147

A primary target of the \Euclid space mission is to constrain early-universe physics by searching for deviations from a primordial Gaussian random field. A significant detection of…

astro-ph.CO2024★ 17 cited

Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array

Peter Athron, Marco Chianese, Satyabrata Datta +2

Blue-tilted Gravitational Waves (BGWs) have been proposed as a potential candidate for the cosmic gravitational waves detected by Pulsar Timing Arrays (PTA). In the standard cosmol…

astro-ph.CO2024★ 1 cited

Dark sector interactions in light of weak lensing data

M. Benetti, P. T. Z. Seidel, C. Pigozzo +3

The current observational tensions in the standard cosmological model have reinforced the research on dynamical dark energy, in particular on models with non-gravitational interact…

astro-ph.CO2024

Euclid preparation: 6x2 pt analysis of Euclid's spectroscopic and photometric data sets

Euclid Collaboration, L. Paganin, M. Bonici +252

We present cosmological parameter forecasts for the Euclid 6x2pt statistics, which include the galaxy clustering and weak lensing main probes together with previously neglected cro…

astro-ph.CO2024★ 1 cited

Euclid preparation. L. Calibration of the linear halo bias in CDM cosmologies

Euclid Collaboration, T. Castro, A. Fumagalli +253

The Euclid mission, designed to map the geometry of the dark Universe, presents an unprecedented opportunity for advancing our understanding of the cosmos through its photometric g…

astro-ph.CO2024★ 6 cited

Euclid preparation: Determining the weak lensing mass accuracy and precision for galaxy clusters

Euclid Collaboration, L. Ingoglia, M. Sereno +279

We investigate the level of accuracy and precision of cluster weak-lensing (WL) masses measured with the \Euclid data processing pipeline. We use the DEMNUni-Cov -body simulatio…

astro-ph.CO2024★ 8 cited

Euclid preparation. LIX. Angular power spectra from discrete observations

Euclid Collaboration, N. Tessore, B. Joachimi +266

We present the framework for measuring angular power spectra in the Euclid mission. The observables in galaxy surveys, such as galaxy clustering and cosmic shear, are not continuou…

astro-ph.CO2024★ 10 cited

Discriminating among cosmological models by data-driven methods

Simone Vilardi, Salvatore Capozziello, Massimo Brescia

We explores the Pantheon+SH0ES dataset to identify patterns that can discriminate between different cosmological models. We focus on determining whether the behaviour of dark energ…

astro-ph.CO2024★ 4 cited

Euclid preparation. Exploring the properties of proto-clusters in the Simulated Euclid Wide Survey

Euclid Collaboration, H. Böhringer, G. Chon +263

Galaxy proto-clusters are receiving an increased interest since most of the processes shaping the structure of clusters of galaxies and their galaxy population are happening at ear…

astro-ph.CO2024★ 8 cited

Euclid and KiDS-1000: Quantifying the impact of source-lens clustering on cosmic shear analyses

L. Linke, S. Unruh, A. Wittje +150

The transition from current Stage-III surveys such as the Kilo-Degree Survey (KiDS) to the increased area and redshift range of Stage IV surveys such as Euclid will significantly i…

astro-ph.CO2024★ 6 cited

Euclid preparation. Sensitivity to non-standard particle dark matter model

Euclid Collaboration, J. Lesgourgues, J. Schwagereit +249

The Euclid mission of the European Space Agency will provide weak gravitational lensing and galaxy clustering surveys that can be used to constrain the standard cosmological model…

astro-ph.CO2024★ 20 cited

Constraining the primordial black hole abundance through Big-Bang nucleosynthesis

Andrea Boccia, Fabio Iocco, Luca Visinelli

We investigate the scenario in which primordial black holes (PBHs) with masses Mpbh < 10^9 g undergo Hawking evaporation, around the Big-Bang nucleosynthesis (BBN) epoch. The evapo…

astro-ph.CO2024★ 8 cited

The Three Hundred project: Estimating the dependence of gas filaments on the mass of galaxy clusters

Sara Santoni, Marco De Petris, Gustavo Yepes +7

Galaxy clusters are located in the densest areas of the universe and are intricately connected to larger structures through the filamentary network of the Cosmic Web. In this scena…

astro-ph.CO2024★ 9 cited

Improved model of the Supernova Refsdal cluster MACS J1149.5+2223 thanks to VLT/MUSE

S. Schuldt, C. Grillo, G. B. Caminha +9

We present new VLT/MUSE observations of the Hubble Frontier Field (HFF) galaxy cluster MACS J1149.5+2223, lensing the well-known supernova "Refsdal" into multiple images, which ena…

astro-ph.CO2024★ 12 cited

Euclid preparation. LIII. LensMC, weak lensing cosmic shear measurement with forward modelling and Markov Chain Monte Carlo sampling

Euclid Collaboration, G. Congedo, L. Miller +239

LensMC is a weak lensing shear measurement method developed for Euclid and Stage-IV surveys. It is based on forward modelling in order to deal with convolution by a point spread fu…

astro-ph.CO2024★ 3 cited

Euclid preparation. Improving cosmological constraints using a new multi-tracer method with the spectroscopic and photometric samples

Euclid Collaboration, F. Dournac, A. Blanchard +240

Future data provided by the Euclid mission will allow us to better understand the cosmic history of the Universe. A metric of its performance is the figure-of-merit (FoM) of dark e…

astro-ph.CO2024★ 4 cited

Can the NANOGrav observations constrain the geometry of the universe?

Matteo Califano, Rocco D'Agostino, Daniele Vernieri

The theory of inflation provides an elegant explanation for the nearly flat universe observed today, which represents one of the pillars of the standard cosmological model. However…

astro-ph.CO2024★ 3 cited

Euclid: Testing photometric selection of emission-line galaxy targets

M. S. Cagliari, B. R. Granett, L. Guzzo +144

Multi-object spectroscopic galaxy surveys typically make use of photometric and colour criteria to select targets. Conversely, the Euclid NISP slitless spectrograph will record spe…

astro-ph.CO2024★ 19 cited

Compatibility of JWST results with exotic halos

Fabio Iocco, Luca Visinelli

The James Webb Space Telescope (JWST) is unveiling astounding results about the first few hundred million years of life of the Universe, delivering images of galaxies at very high…

astro-ph.CO2024★ 8 cited

Recovered SN Ia rate from simulated LSST images

Vincenzo Petrecca, Maria Teresa Botticella, Enrico Cappellaro +8

The Legacy Survey of Space and Time (LSST) will revolutionize Time Domain Astronomy by detecting millions of transients. In particular, it is expected to increment the number of ty…

astro-ph.CO2024★ 16 cited

AMICO galaxy clusters in KiDS-DR3: measuring the splashback radius from weak gravitational lensing

Carlo Giocoli, Lorenzo Palmucci, Giorgio F. Lesci +13

Context. Weak gravitational lensing offers a powerful method to investigate the projected matter density distribution within galaxy clusters, granting crucial insights into the bro…

astro-ph.CO2024★ 7 cited

Euclid: Identifying the reddest high-redshift galaxies in the Euclid Deep Fields with gradient-boosted trees

T. Signor, G. Rodighiero, L. Bisigello +138

Dusty, distant, massive () galaxies are usually found to show a remarkable star-formation activity, contributing on the order of of the cosm…

astro-ph.CO2024

Euclid: Improving the efficiency of weak lensing shear bias calibration. Pixel noise cancellation and the response method on trial

H. Jansen, M. Tewes, T. Schrabback +118

To obtain an accurate cosmological inference from upcoming weak lensing surveys such as the one conducted by Euclid, the shear measurement requires calibration using galaxy image s…

astro-ph.CO2024★ 1 cited

Euclid preparation XLVI. The Near-IR Background Dipole Experiment with Euclid

Euclid Collaboration, A. Kashlinsky, R. G. Arendt +217

Verifying the fully kinematic nature of the cosmic microwave background (CMB) dipole is of fundamental importance in cosmology. In the standard cosmological model with the Friedman…