E. Bertin
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View article: Disk fraction among free-floating planetary-mass objects in Upper Scorpius
Disk fraction among free-floating planetary-mass objects in Upper Scorpius Open
Free-floating planetary-mass objects (FFPs) have been detected through direct imaging in several young, nearby star-forming regions. The properties of circumstellar disks around these objects may provide a valuable probe into their origin …
View article: Using Blockchain for Enhanced Inter-MNO Authentication in B5G and 6G Networks
Using Blockchain for Enhanced Inter-MNO Authentication in B5G and 6G Networks Open
International audience
View article: Demo: Decentralized Product Lifecycle Management Using Blockchain and Digital Twins
Demo: Decentralized Product Lifecycle Management Using Blockchain and Digital Twins Open
International audience
View article: Euclid: Early Release Observations. Weak gravitational lensing analysis of Abell 2390
Euclid: Early Release Observations. Weak gravitational lensing analysis of Abell 2390 Open
The Euclid space telescope of the European Space Agency (ESA) is designed to provide sensitive and accurate measurements of weak gravitational lensing distortions over wide areas on the sky. Here we present a weak gravitational lensing ana…
View article: Multiplicity of young isolated planetary mass objects in Taurus and Upper Scorpius
Multiplicity of young isolated planetary mass objects in Taurus and Upper Scorpius Open
Free-floating planetary mass objects-worlds that roam interstellar space untethered to a parent star-challenge conventional notions of planetary formation and migration, but also of star and brown dwarf formation. We focus on the multiplic…
View article: COSMOS2025: The COSMOS-Web galaxy catalog of photometry, morphology, redshifts, and physical parameters from JWST, HST, and ground-based imaging
COSMOS2025: The COSMOS-Web galaxy catalog of photometry, morphology, redshifts, and physical parameters from JWST, HST, and ground-based imaging Open
We present COSMOS2025, the COSMOS-Web catalog of photometry, morphology, photometric redshifts and physical parameters for more than 700,000 galaxies in the Cosmic Evolution Survey (COSMOS) field. This catalog is based on our \textit{James…
View article: Free-floating planetary mass objects in LDN 1495 from Euclid Early Release Observations
Free-floating planetary mass objects in LDN 1495 from Euclid Early Release Observations Open
Context . Substellar objects, including brown dwarfs and free-floating planetary-mass objects, are a significant product of star formation. Their sensitivity to initial conditions and early dynamical evolution makes them especially valuabl…
View article: <i>Euclid</i>: Early Release Observations – Programme overview and pipeline for compact- and diffuse-emission photometry
<i>Euclid</i>: Early Release Observations – Programme overview and pipeline for compact- and diffuse-emission photometry Open
The Euclid Early Release Observations (ERO) showcase Euclid ’s capabilities in advance of its main mission by targeting 17 astronomical objects, including galaxy clusters, nearby galaxies, globular clusters, and star-forming regions. A tot…
View article: An Abrupt Change in the Disk Fraction of Free-Floating Planets at the Deuterium-Burning Ignition Limit
An Abrupt Change in the Disk Fraction of Free-Floating Planets at the Deuterium-Burning Ignition Limit Open
Free-floating planets (FFPs) - planetary-mass objects that roam the galaxy unbound to any star - have been identified through both indirect microlensing detections in the field \citep{Mroz2017, Sumi2023} and direct observations within youn…
View article: Dark Energy Survey Year 6 Results: Photometric Data Set for Cosmology
Dark Energy Survey Year 6 Results: Photometric Data Set for Cosmology Open
We describe the photometric data set assembled from the full six years of observations by the Dark Energy Survey (DES) in support of static-sky cosmology analyses. DES Y6 Gold is a curated data set derived from DES Data Release 2 (DR2) tha…
View article: Drawing the boundaries between Blockchain and Blockchain-like systems: A Comprehensive Survey on Distributed Ledger Technologies
Drawing the boundaries between Blockchain and Blockchain-like systems: A Comprehensive Survey on Distributed Ledger Technologies Open
Bitcoin's global success has led to the rise of blockchain, but many systems labeled as "blockchain" deviate from its core principles, adding complexity to the ecosystem. This survey addresses the need for a comprehensive review and taxono…
View article: The gravitational lensing imprints of DES Y3 superstructures on the CMB: a matched filtering approach
The gravitational lensing imprints of DES Y3 superstructures on the CMB: a matched filtering approach Open
Low-density cosmic voids gravitationally lens the cosmic microwave background (CMB), leaving a negative imprint on the CMB convergence $\kappa$. This effect provides insight into the distribution of matter within voids, and can also be use…
View article: Weak lensing combined with the kinetic Sunyaev–Zel’dovich effect: a study of baryonic feedback
Weak lensing combined with the kinetic Sunyaev–Zel’dovich effect: a study of baryonic feedback Open
Extracting precise cosmology from weak lensing surveys requires modelling the non-linear matter power spectrum, which is suppressed at small scales due to baryonic feedback processes. However, hydrodynamical galaxy formation simulations ma…
View article: Weak lensing combined with the kinetic Sunyaev–Zel’dovich effect: a study of baryonic feedback
Weak lensing combined with the kinetic Sunyaev–Zel’dovich effect: a study of baryonic feedback Open
Extracting precise cosmology from weak lensing surveys requires modelling the non-linear matter power spectrum, which is suppressed at small scales due to baryonic feedback processes. However, hydrodynamical galaxy formation simulations ma…
View article: Dark Energy Survey: A 2.1% measurement of the angular baryonic acoustic oscillation scale at redshift <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>z</mml:mi></mml:mrow><mml:mrow><mml:mi>eff</mml:mi></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>0.85</mml:mn></mml:mrow></mml:math> from the final dataset
Dark Energy Survey: A 2.1% measurement of the angular baryonic acoustic oscillation scale at redshift from the final dataset Open
Here, we present the angular diameter distance measurement obtained with the baryonic acoustic oscillation (BAO) feature from galaxy clustering in the completed Dark Energy Survey, consisting of six years (Y6) of observations. We use the Y…
View article: The Dark Energy Survey: Cosmology Results with ∼1500 New High-redshift Type Ia Supernovae Using the Full 5 yr Data Set
The Dark Energy Survey: Cosmology Results with ∼1500 New High-redshift Type Ia Supernovae Using the Full 5 yr Data Set Open
We present cosmological constraints from the sample of Type Ia supernovae (SNe Ia) discovered and measured during the full 5 yr of the Dark Energy Survey (DES) SN program. In contrast to most previous cosmological samples, in which SNe are…
View article: The dark energy survey supernova program: investigating beyond-ΛCDM
The dark energy survey supernova program: investigating beyond-ΛCDM Open
We report constraints on a variety of non-standard cosmological models using the full 5-yr photometrically classified type Ia supernova sample from the Dark Energy Survey (DES-SN5YR). Both Akaike Information Criterion (AIC) and Suspiciousn…
View article: The Dark Energy Survey 5-yr photometrically classified type Ia supernovae without host-galaxy redshifts
The Dark Energy Survey 5-yr photometrically classified type Ia supernovae without host-galaxy redshifts Open
Current and future Type Ia Supernova (SN Ia) surveys will need to adopt new approaches to classifying SNe and obtaining their redshifts without spectra if they wish to reach their full potential. We present here a novel approach that uses …
View article: Mass calibration of DES Year-3 clusters via SPT-3G CMB cluster lensing
Mass calibration of DES Year-3 clusters via SPT-3G CMB cluster lensing Open
We measure the stacked lensing signal in the direction of galaxy clusters in the Dark Energy Survey Year 3 (DES Y3) redMaPPer sample, using cosmic microwave background (CMB) temperature data from SPT-3G, the third-generation CMB camera on …
View article: The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes
The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes Open
The residuals of the distance moduli of Type Ia supernovae (SNe Ia) relative to a Hubble diagram fit contain information about the inhomogeneity of the Universe, due to weak lensing magnification by foreground matter. By correlating the re…
View article: The Dark Energy Survey Supernova Program: Investigating\n Beyond-$\\Lambda$CDM
The Dark Energy Survey Supernova Program: Investigating\n Beyond-$\\Lambda$CDM Open
We report constraints on a variety of non-standard cosmological models using\nthe full 5-year photometrically-classified type Ia supernova sample from the\nDark Energy Survey (DES-SN5YR). Both Akaike Information Criterion (AIC) and\nSuspic…
View article: The Gravitational Lensing Imprints of DES Y3 Superstructures on the CMB: A Matched Filtering Approach
The Gravitational Lensing Imprints of DES Y3 Superstructures on the CMB: A Matched Filtering Approach Open
$ $Low density cosmic voids gravitationally lens the cosmic microwave background (CMB), leaving a negative imprint on the CMB convergence $κ$. This effect provides insight into the distribution of matter within voids, and can also be used …
View article: DanceCam: atmospheric turbulence mitigation in wide-field astronomical images with short-exposure video streams
DanceCam: atmospheric turbulence mitigation in wide-field astronomical images with short-exposure video streams Open
We introduce a novel technique to mitigate the adverse effects of atmospheric turbulence on astronomical imaging. Utilizing a video-to-image neural network trained on simulated data, our method processes a sliding sequence of short-exposur…
View article: The Dark Energy Survey Supernova Program: Cosmological Biases from Host Galaxy Mismatch of Type Ia Supernovae
The Dark Energy Survey Supernova Program: Cosmological Biases from Host Galaxy Mismatch of Type Ia Supernovae Open
Redshift measurements, primarily obtained from host galaxies, are essential for inferring cosmological parameters from type Ia supernovae (SNe Ia). Matching SNe to host galaxies using images is nontrivial, resulting in a subset of SNe with…
View article: Drawing the Boundaries Between Blockchain and Blockchain-Like Systems: A Comprehensive Survey on Distributed Ledger Technologies
Drawing the Boundaries Between Blockchain and Blockchain-Like Systems: A Comprehensive Survey on Distributed Ledger Technologies Open
International audience
View article: Galaxies Going Bananas: Inferring the 3D Geometry of High-redshift Galaxies with JWST-CEERS
Galaxies Going Bananas: Inferring the 3D Geometry of High-redshift Galaxies with JWST-CEERS Open
The 3D geometries of high-redshift galaxies remain poorly understood. We build a differentiable Bayesian model and use Hamiltonian Monte Carlo to efficiently and robustly infer the 3D shapes of star-forming galaxies in James Webb Space Tel…
View article: Dark Energy Survey: A 2.1% measurement of the angular Baryonic Acoustic Oscillation scale at redshift $z_{\rm eff}$=0.85 from the final dataset
Dark Energy Survey: A 2.1% measurement of the angular Baryonic Acoustic Oscillation scale at redshift $z_{\rm eff}$=0.85 from the final dataset Open
We present the angular diameter distance measurement obtained with the Baryonic Acoustic Oscillation feature from galaxy clustering in the completed Dark Energy Survey, consisting of six years (Y6) of observations. We use the Y6 BAO galaxy…
View article: Examining the self-interaction of dark matter through central cluster galaxy offsets
Examining the self-interaction of dark matter through central cluster galaxy offsets Open
While collisionless cold dark matter models have been largely successful in explaining a wide range of observational data, some tensions still exist, and it remains possible that dark matter possesses a non-negligible level of self-interac…
View article: The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset
The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset Open
We present cosmological constraints from the sample of Type Ia supernovae (SN Ia) discovered during the full five years of the Dark Energy Survey (DES) Supernova Program. In contrast to most previous cosmological samples, in which SN are c…
View article: Cosmology from cross-correlation of ACT-DR4 CMB lensing and DES-Y3 cosmic shear
Cosmology from cross-correlation of ACT-DR4 CMB lensing and DES-Y3 cosmic shear Open
Cross-correlation between weak lensing of the Cosmic Microwave Background (CMB) and weak lensing of galaxies offers a way to place robust constraints on cosmological and astrophysical parameters with reduced sensitivity to certain systemat…