K. Herner

The Dark Energy Survey supernova program: a reanalysis of cosmology results and evidence for evolving dark energy with an updated Type Ia supernova calibration

B Popovic, P Shah, W. D. Kenworthy, R Kessler et autres

ABSTRACT We present improved cosmological constraints from a re-analysis of the Dark Energy Survey (DES) 5-year sample of Type Ia supernovae (DES-SN5YR). This re-analysis includes an improved photometric cross-calibration, recent white dwarf observations to cross-calibrate between DES and low-redshift surveys, retraining the …

fr, gb, se, us, au, ru, es, ch, de, br, ca, cl, it (code pays fourni par la source)

Dark Energy Survey Year 3 results: Simulation-based w CDM inference from weak lensing and galaxy clustering maps with deep learning: Analysis design

Jozef Bucko, T. Kacprzak, Virginia Ajani, Janis Fluri et autres

Data-driven approaches using deep learning are emerging as powerful techniques to extract non-Gaussian information from cosmological large-scale structure. This work presents the first simulation-based inference (SBI) pipeline that combines weak lensing and galaxy clustering maps in a realistic Dark Energy Survey Year …

ch, it, us, es, gb, br, fr, ca, de, se, cl, mx, au, tw, in (code pays fourni par la source)

Dark Energy Survey Year 3 results: w CDM cosmology from simulation-based inference with persistent homology on the sphere

J. Prat, M. Gatti, C. Doux, Pratyush Pranav et autres

ABSTRACT We present cosmological constraints from Dark Energy Survey Year 3 (DES Y3) weak lensing data using persistent homology, a topological data analysis technique that tracks how features like clusters and voids evolve across density thresholds. For the first time, we apply …

se, us, fr, in, gb, ch, es, ca, de, br, it, cl, au, sk (code pays fourni par la source)

Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog

Dhayaa Anbajagane, M. Tabbutt, J. Beas-Gonzalez, B. Yanny et autres

Synthetic source injection (SSI), the insertion of sources into pixel-level on-sky images, is a powerful method for characterizing object detection and measurement in wide-field, astronomical imaging surveys. Within the Dark Energy Survey (DES), SSI plays a critical role in characterizing all necessary …

us, jp, nl, es, ca, fr, de, br, gb, au, in, se, it, cl (code pays fourni par la source)

Consistent lensing and clustering in a low-$S_8$ Universe with BOSS, DES Year 3, HSC Year 1 and KiDS-1000

A. Amon, N. C. Robertson, H. Miyatake, C. Heymans et autres

We evaluate the consistency between lensing and clustering probes of large-scale structure based on measurements of projected galaxy clustering from BOSS combined with overlapping galaxy-galaxy lensing from three surveys: DES Y3, HSC Y1, and KiDS-1000. An intra-lensing-survey study finds good agreement between …