output
19932026
Showing 2024 · astro-ph.COShow all

44 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★ 3 cited

FLAMINGO: Galaxy formation and feedback effects on the gas density and velocity fields

Lurdes Ondaro-Mallea, Raul E. Angulo, Giovanni Aricò +3

Most of the visible matter in the Universe is in a gaseous state, subject to hydrodynamic forces and galaxy formation processes that are much more complex to model than gravity. Th…

astro-ph.CO2024★ 4 cited

A 1% accurate method to include baryonic effects in galaxy-galaxy lensing models

Matteo Zennaro, Giovanni Aricò, Carlos García-García +6

Galaxy clustering and galaxy-galaxy lensing are two of the main observational probes in Stage-IV large-scale structure surveys. Unfortunately, the complicated relationship between…

astro-ph.CO2024★ 4 cited

Cosmological Zoom-In Simulations of Milky Way Host Mass Dark Matter Halos with a Blue-Tilted Primordial Power Spectrum

Jianhao Wu, Tsang Keung Chan, Victor J. Forouhar Moreno

Recent observations from the James Webb Space Telescope revealed a surprisingly large number of galaxies at high redshift, challenging the standard Lambda Cold Dark Matter cosmolog…

astro-ph.CO2024★ 5 cited

The FLAMINGO project: cosmology with the redshift dependence of weak gravitational lensing peaks

Jeger C. Broxterman, Matthieu Schaller, Henk Hoekstra +5

Weak gravitational lensing (WL) convergence peaks contain valuable cosmological information in the regime of non-linear collapse. Using the FLAMINGO suite of cosmological hydrodyna…

astro-ph.CO2024★ 3 cited

Non-thermal emission in galaxy groups at extremely low frequency: the case of A1213

T. Pasini, V. H. Mahatma, M. Brienza +7

Galaxy clusters and groups are the last link in the chain of hierarchical structure formation. Their environments can be significantly affected by outbursts from AGN, especially in…

astro-ph.CO2024★ 7 cited

KiDS-Legacy: Angular galaxy clustering from deep surveys with complex selection effects

Ziang Yan, Angus H. Wright, Nora Elisa Chisari +20

Photometric galaxy surveys, despite their limited resolution along the line of sight, encode rich information about the large-scale structure (LSS) of the Universe thanks to the hi…

astro-ph.CO2024★ 23 cited

The FLAMINGO project: Baryon effects on the matter power spectrum

Matthieu Schaller, Joop Schaye, Roi Kugel +2

The effect of baryon physics associated with galaxy formation onto the large-scale matter distribution of the Universe is a key uncertainty in the theoretical modelling required fo…

astro-ph.CO2024★ 3 cited

Cooling rate and turbulence in the intracluster medium of the cool-core cluster Abell 2667

M. Lepore, C. Pinto, P. Tozzi +8

We present a detailed analysis of the thermal X-ray emission from the intracluster medium (ICM) in the cool-core galaxy cluster Abell 2667 (). Our goal is to detect low-tem…

astro-ph.CO2024

Neural network emulator to constrain the high- IGM thermal state from Lyman- forest flux auto-correlation function

Zhenyu Jin, Molly Wolfson, Joseph F. Hennawi +1

We present a neural network emulator to constrain the thermal parameters of the intergalactic medium (IGM) at using the Lyman- (L…

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★ 2 cited

6x2pt: Forecasting gains from joint weak lensing and galaxy clustering analyses with spectroscopic-photometric galaxy cross-correlations

Harry Johnston, Nora Elisa Chisari, Shahab Joudaki +25

We explore the enhanced self-calibration of photometric galaxy redshift distributions, , through the combination of up to six two-point functions. Our config…

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★ 11 cited

KiDS-1000: Weak lensing and intrinsic alignment around luminous red galaxies

Maria Cristina Fortuna, Andrej Dvornik, Henk Hoekstra +8

We study the properties of luminous red galaxies (LRGs) selected from the fourth data release of the Kilo Degree Survey (KiDS-1000) via galaxy-galaxy lensing of the background gala…

astro-ph.CO2024★ 3 cited

Euclid preparation. LXVII. Deep learning true galaxy morphologies for weak lensing shear bias calibration

Euclid Collaboration, B. Csizi, T. Schrabback +259

To date, galaxy image simulations for weak lensing surveys usually approximate the light profiles of all galaxies as a single or double Sérsic profile, neglecting the influence of…

astro-ph.CO2024★ 10 cited

How new physics affects primordial neutrinos decoupling: Direct Simulation Monte Carlo approach

Maksym Ovchynnikov, Vsevolod Syvolap

Cosmological observations from Big Bang Nucleosynthesis and the Cosmic Microwave Background (CMB) offer crucial insights into the Early Universe, enabling us to trace its evolution…

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★ 11 cited

Magnetic fields in the outskirts of PSZ2 G096.88+24.18 from depolarization analysis of radio relics

E. De Rubeis, C. Stuardi, A. Bonafede +4

In this paper, we investigate the polarization properties of the double radio relics in PSZ2 G096.88+24.18 using the rotation measure synthesis, and try to constrain the characteri…

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★ 19 cited

Probing cluster magnetism with embedded and background radio sources in Planck clusters

Erik Osinga, Reinout J. van Weeren, Lawrence Rudnick +6

Magnetic fields remain an enigmatic part of the content of galaxy clusters. Faraday rotation and depolarisation of extragalactic radio sources are useful probes, but the limited av…

astro-ph.CO2024★ 7 cited

Examining the local Universe isotropy with galaxy cluster velocity dispersion scaling relations

A. Pandya, K. Migkas, T. H. Reiprich +7

In standard cosmology, the late Universe is assumed to be statistically homogeneous and isotropic. However, a recent study based on galaxy clusters by Migkas et al. (2021, arXiv:21…

astro-ph.CO2024★ 6 cited

Stage IV baryonic feedback correction for non-Gaussianity inference

Daniela Grandón, Elena Sellentin

Non-Gaussian statistics of the projected weak lensing field are powerful estimators that can outperform the constraining power of the two-point functions in inferring cosmological…

astro-ph.CO2024★ 93 cited

Hints of Nonminimally Coupled Gravity in DESI 2024 Baryon Acoustic Oscillation Measurements

Gen Ye, Matteo Martinelli, Bin Hu +1

The cosmic microwave background (CMB) and baryon acoustic oscillations (BAO) are two of the most robust observations in cosmology. The recent BAO measurements from the DESI collabo…

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…