Pith. sign in

REVIEW 4 cited by

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1906.09262 v2 pith:2SDMZXA3 submitted 2019-06-21 astro-ph.CO

KiDS+VIKING-450 and DES-Y1 combined: Cosmology with cosmic shear

S. Joudaki , H. Hildebrandt , D. Traykova , N. E. Chisari , C. Heymans , A. Kannawadi , K. Kuijken , A. H. Wright
show 7 more authors
M. Asgari T. Erben H. Hoekstra B. Joachimi L. Miller T. Tr\"oster J. L. van den Busch
This is my paper
classification astro-ph.CO
keywords des-y1combinedcosmicredshiftsigmaadoptinganalysiscalibration
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
read the original abstract

We present a combined tomographic weak gravitational lensing analysis of the Kilo Degree Survey (KV450) and the Dark Energy Survey (DES-Y1). We homogenize the analysis of these two public cosmic shear datasets by adopting consistent priors and modeling of nonlinear scales, and determine new redshift distributions for DES-Y1 based on deep public spectroscopic surveys. Adopting these revised redshifts results in a $0.8\sigma$ reduction in the DES-inferred value for $S_8$, which decreases to a $0.5\sigma$ reduction when including a systematic redshift calibration error model from mock DES data based on the MICE2 simulation. The combined KV450 + DES-Y1 constraint on $S_8 = 0.762^{+0.025}_{-0.024}$ is in tension with the Planck 2018 constraint from the cosmic microwave background at the level of $2.5\sigma$. This result highlights the importance of developing methods to provide accurate redshift calibration for current and future weak lensing surveys.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Nonlinear Matter Power Spectrum from relativistic $N$-body Simulations: $\Lambda_{\rm s}$CDM versus $\Lambda$CDM

    astro-ph.CO 2025-10 unverdicted novelty 6.0

    Relativistic N-body simulations of Lambda_s CDM produce a redshift-dependent crest in the matter power spectrum ratio, peaking at 20-25% near the transition and leaving a 15-20% uplift at z=0 on group scales.

  2. CMB Lensing Reconstruction Using Two Years of Temperature Data from the SPT-3G Summer Survey

    astro-ph.CO 2026-07 conditional novelty 5.0

    First CMB lensing reconstruction from two years of SPT-3G Summer temperature data yields A_comb = 1.015 ± 0.053 over 50 < L < 2000, consistent with Planck 2018 ΛCDM.

  3. Planck 2018 results. VI. Cosmological parameters

    astro-ph.CO 2018-07 accept novelty 5.0

    Final Planck CMB data confirms the flat 6-parameter ΛCDM model with Ω_c h² = 0.120 ± 0.001, Ω_b h² = 0.0224 ± 0.0001, n_s = 0.965 ± 0.004, τ = 0.054 ± 0.007, H_0 = 67.4 ± 0.5 km/s/Mpc, and no strong evidence for extensions.

  4. In the Realm of the Hubble tension $-$ a Review of Solutions

    astro-ph.CO 2021-03 unverdicted novelty 2.0

    A review summarizing the Hubble constant tension and proposed solutions from new physics that restore agreement between Planck CMB data and local H0 measurements within 1-2 sigma.