Publications associées à Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes

Publications associées (16)

J1721+8842: The first Einstein zigzag lens

We report the discovery of the first example of an Einstein zigzag lens, an extremely rare lensing configuration. In this system, J1721+8842, six images of the same background quasar are formed by two intervening galaxies, one at redshift z(1) = 0.184 and ...

EDP SCIENCES S A2025

DESI 2024 VII: cosmological constraints from the full-shape modeling of clustering measurements

Antoine Philippe Jacques Rocher, Rafaela Gsponer

We present cosmological results from the measurement of clustering of galaxy, quasar and Lyman-α forest tracers from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). We adopt the full-shape (FS) modeling o ...

2025

euclid Preparation: Lxiii. Simulations and Non-linearities Beyond Lambda Cold Dark Matter. 2. Results From Non-standard Simulations

Frédéric Courbin, Georges Meylan

The Euclid mission will measure cosmological parameters with unprecedented precision. To distinguish between cosmological models, it is essential to generate realistic mock observables from cosmological simulations that were run in both the standard Lambda ...

EDP SCIENCES S A2025

Euclid: Early Release Observations – NISP-only sources and the search for luminous z = 6–8 galaxies

Frédéric Courbin, Georges Meylan

This paper presents a search for high redshift galaxies from the Euclid Early Release Observations program ‘Magnifying Lens.’ The 1.5 deg2 area covered by the twin Abell lensing cluster fields is comparable in size to the few other deep near-infrared surve ...

2025

Joint Multiband Deconvolution for Euclid and Vera C. Rubin Images

Frédéric Courbin, Pascale Jablonka, Utsav Akhaury

With the advent of surveys like Euclid and Vera C. Rubin, astrophysicists will have access to both deep, high-resolution images and multiband images. However, these two types are not simultaneously available in any single dataset. It is therefore vital to ...

EDP Sciences SA2025

CAPERS Observations of Two UV-bright Galaxies at z > 10. More Evidence for Bursting Star Formation in the Early Universe

Michaela Hirschmann

We present the first results from the CANDELS-Area Prism Epoch of Reionization Survey (CAPERS), utilizing PRISM observations with the JWST/NIRSpec microshutter assembly in the PRIMER-UDS field. With just 14% of the total planned data volume, we spectroscop ...

2025

Observation of a Spectral Hardening in Cosmic Ray Boron Spectrum with the DAMPE Space Mission

Chiara Perrina, Jennifer Maria Frieden

Secondary cosmic ray fluxes are important probes of the propagation and interaction of high-energy particles in the Galaxy. Recent measurements of primary and secondary cosmic ray nuclei have revealed unexpected spectral features that demand a deeper under ...

American Physical Society (APS)2025

Conformal leptogenesis in composite Higgs models

Majid Ekhterachian

We study the generation of the baryon asymmetry in Composite Higgs models with partial compositeness of the Standard Model (SM) fermions and heavy right-handed neutrinos, developing for the first time a complete picture of leptogenesis in that setup. The a ...

SPRINGER2025

Digital Transformation in African Heritage Preservation: A Digital Twin Framework for a Sustainable Bab Al-Mansour in Meknes City, Morocco

Jérôme Chenal

Highlights What are the main findings? - The study develops a Digital Twin Heritage Building (DTHB) framework based on digital transformation, integrating HBIM, IoT sensors, and predictive analytics to address structural and environmental challenges. - The ...

MDPI2025

A Dynamical Yukawa2 Model

Martin Hairer

We prove local (in space and time) well-posedness for a mildly regularised version of the stochastic quantisation of the Yukawa(2) Euclidean field theory with a self-interacting boson. Our regularised dynamic is still singular but avoids non-local divergen ...

SPRINGER2025

XVI. Measurement of the Hubble constant from the lensed quasar WGD 2038–4008

Frédéric Courbin

Time-delay cosmography is a powerful technique to constrain cosmological parameters, particularly the Hubble constant (H0). The TDCOSMO Collaboration is performing an ongoing analysis of lensed quasars to constrain cosmology using this method. In this work ...

2024

The hierarchical cosmic web and assembly bias

Daniel Felipe Forero Sanchez

Accurate modeling of galaxy distributions is paramount for cosmological analysis using galaxy redshift surveys. However, this endeavor is often hindered by the computational complexity of resolving the dark matter halos that host these galaxies. To address ...

2024

Euclid preparation XLI. Galaxy power spectrum modelling in real space

Frédéric Courbin, Georges Meylan

We investigate the accuracy of the perturbative galaxy bias expansion in view of the forthcoming analysis of the Euclid spectroscopic galaxy samples. We compare the performance of a Eulerian galaxy bias expansion using state-of-the-art prescriptions from t ...

2024

Mass and light in galaxy clusters: The case of Abell 370

Benjamin Emmanuel Nicolas Beauchesne

In the cold dark matter (CDM) paradigm, an association between the hypothetic dark matter (DM) and its stellar counterpart is expected. However, parametric strong-lensing studies of galaxy clusters often display misleading features: DM components on the gr ...

EDP SCIENCES S A2024

Qualify-as-you-go: sensor fusion of optical and acoustic signatures with contrastive deep learning for multi-material composition monitoring in laser powder bed fusion process

Christian Leinenbach, Antonios Nikolaos Baganis

Growing demand for multi-material Laser Powder Bed Fusion (LPBF) faces process control and quality monitoring challenges, particularly in ensuring precise material composition. This study explores optical and acoustic emission signals during LPBF processes ...

Taylor & Francis Ltd2024

Unravelling the components of diffuse scattering using deep learning

Lucas Sebastian Powell-Rudden

Many technologically important material properties are underpinned by disorder and short-range structural correlations; therefore, elucidating structure-property relationships in functional materials requires understanding both the average and the local st ...

Int Union Crystallography2024