pith. sign in

arxiv: 1907.12875 · v2 · pith:O44MIPIVnew · submitted 2019-07-30 · 🌌 astro-ph.CO

Planck 2018 results. V. CMB power spectra and likelihoods

Planck Collaboration: N. Aghanim , Y. Akrami , M. Ashdown , J. Aumont , C. Baccigalupi , M. Ballardini , A. J. Banday , R. B. Barreiro
show 159 more authors
N. Bartolo S. Basak K. Benabed J.-P. Bernard M. Bersanelli P. Bielewicz J. J. Bock J. R. Bond J. Borrill F. R. Bouchet F. Boulanger M. Bucher C. Burigana R. C. Butler E. Calabrese J.-F. Cardoso J. Carron B. Casaponsa A. Challinor H. C. Chiang L. P. L. Colombo C. Combet B. P. Crill F. Cuttaia P. de Bernardis A. de Rosa G. de Zotti J. Delabrouille J.-M. Delouis E. Di Valentino J. M. Diego O. Dor\'e M. Douspis A. Ducout X. Dupac S. Dusini G. Efstathiou F. Elsner T. A. En{\ss}lin H. K. Eriksen Y. Fantaye R. Fernandez-Cobos F. Finelli M. Frailis A. A. Fraisse E. Franceschi A. Frolov S. Galeotta S. Galli K. Ganga R. T. G\'enova-Santos M. Gerbino T. Ghosh Y. Giraud-H\'eraud J. Gonz\'alez-Nuevo K. M. G\'orski S. Gratton A. Gruppuso J. E. Gudmundsson J. Hamann W. Handley F. K. Hansen D. Herranz E. Hivon Z. Huang A. H. Jaffe W. C. Jones E. Keih\"anen R. Keskitalo K. Kiiveri J. Kim T. S. Kisner N. Krachmalnicoff M. Kunz H. Kurki-Suonio G. Lagache J.-M. Lamarre A. Lasenby M. Lattanzi C. R. Lawrence M. Le Jeune F. Levrier A. Lewis M. Liguori P. B. Lilje M. Lilley V. Lindholm M. L\'opez-Caniego P. M. Lubin Y.-Z. Ma J. F. Mac\'ias-P\'erez G. Maggio D. Maino N. Mandolesi A. Mangilli A. Marcos-Caballero M. Maris P. G. Martin E. Mart\'inez-Gonz\'alez S. Matarrese N. Mauri J. D. McEwen P. R. Meinhold A. Melchiorri A. Mennella M. Migliaccio M. Millea M.-A. Miville-Desch\^enes D. Molinari A. Moneti L. Montier G. Morgante A. Moss P. Natoli H. U. N{\o}rgaard-Nielsen L. Pagano D. Paoletti B. Partridge G. Patanchon H. V. Peiris F. Perrotta V. Pettorino F. Piacentini G. Polenta J.-L. Puget J. P. Rachen M. Reinecke M. Remazeilles A. Renzi G. Rocha C. Rosset G. Roudier J. A. Rubi\~no-Mart\'in B. Ruiz-Granados L. Salvati M. Sandri M. Savelainen D. Scott E. P. S. Shellard C. Sirignano G. Sirri L. D. Spencer R. Sunyaev A.-S. Suur-Uski J. A. Tauber D. Tavagnacco M. Tenti L. Toffolatti M. Tomasi T. Trombetti J. Valiviita B. Van Tent P. Vielva F. Villa N. Vittorio B. D. Wandelt I. K. Wehus A. Zacchei A. Zonca
This is my paper

Pith reviewed 2026-05-15 21:53 UTC · model grok-4.3

classification 🌌 astro-ph.CO
keywords CMB power spectraPlanck likelihoodspolarizationreionization optical depthLambdaCDM parameterssystematics correctionscosmological constraints
0
0 comments X

The pith

Refined corrections let Planck 2018 use full polarization data and tighten LambdaCDM constraints by 20-30 percent.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper updates the Planck CMB likelihoods with a hybrid low- and high-multipole construction and several analysis refinements. Better modelling of temperature-to-polarization leakage and polarization efficiency now permits full use of the High Frequency Instrument polarization spectra. Low-multipole EE data improves the reionization optical depth constraint while high-multipole polarization tightens LambdaCDM parameters relative to temperature-only analyses. Internal consistency tests place any residual differences below the 0.5 sigma level, making the likelihoods a standard reference.

Core claim

The 2018 Planck CMB likelihoods, constructed with improved simulations and explicit corrections for leakage and polarization efficiency, enable complete incorporation of polarization spectra. This yields 20-30 percent stronger constraints on LambdaCDM parameters at high multipoles and a tighter bound on the reionization optical depth from the low-multipole 100x143 GHz EE cross-spectrum, with overall consistency verified to better than 0.5 sigma across implementations.

What carries the argument

Hybrid low- and high-multipole likelihood with explicit temperature-to-polarization leakage modelling and polarization efficiency corrections.

If this is right

  • The low-multipole EE cross-spectrum constrains the reionization optical depth to better than 15 percent when combined with other likelihoods.
  • High-multipole polarization data improves LambdaCDM parameter precision by 20 to 30 percent over temperature-only constraints.
  • Minor differences between ell ranges below and above 800 remain driven by the temperature spectrum and are unchanged by polarization.
  • The likelihoods provide a consistent reference for future CMB observations and cosmological model tests.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Next-generation CMB surveys can treat these likelihoods as a baseline for cross-validation of new polarization measurements.
  • Greater reliance on E-mode data for parameter estimation will become standard once polarization efficiency calibration improves further.
  • Any proposed extension to LambdaCDM should be checked against both the full TEB and TT-only versions to confirm that polarization does not introduce new tensions.

Load-bearing premise

Residual uncertainties after polarization efficiency modelling and leakage corrections remain small enough that they do not shift cosmological parameters by more than the stated consistency level.

What would settle it

An independent high-multipole analysis or new simulation revealing parameter shifts larger than 0.5 sigma between polarization-inclusive and TT-only results would falsify the claimed robustness.

read the original abstract

This paper describes the 2018 Planck CMB likelihoods, following a hybrid approach similar to the 2015 one, with different approximations at low and high multipoles, and implementing several methodological and analysis refinements. With more realistic simulations, and better correction and modelling of systematics, we can now make full use of the High Frequency Instrument polarization data. The low-multipole 100x143 GHz EE cross-spectrum constrains the reionization optical-depth parameter $\tau$ to better than 15% (in combination with with the other low- and high-$\ell$ likelihoods). We also update the 2015 baseline low-$\ell$ joint TEB likelihood based on the Low Frequency Instrument data, which provides a weaker $\tau$ constraint. At high multipoles, a better model of the temperature-to-polarization leakage and corrections for the effective calibrations of the polarization channels (polarization efficiency or PE) allow us to fully use the polarization spectra, improving the constraints on the $\Lambda$CDM parameters by 20 to 30% compared to TT-only constraints. Tests on the modelling of the polarization demonstrate good consistency, with some residual modelling uncertainties, the accuracy of the PE modelling being the main limitation. Using our various tests, simulations, and comparison between different high-$\ell$ implementations, we estimate the consistency of the results to be better than the 0.5$\sigma$ level. Minor curiosities already present before (differences between $\ell$<800 and $\ell$>800 parameters or the preference for more smoothing of the $C_\ell$ peaks) are shown to be driven by the TT power spectrum and are not significantly modified by the inclusion of polarization. Overall, the legacy Planck CMB likelihoods provide a robust tool for constraining the cosmological model and represent a reference for future CMB observations. (Abridged)

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

1 major / 1 minor

Summary. The paper presents the Planck 2018 CMB power spectra and likelihoods via a hybrid low- and high-multipole approach, incorporating refined simulations, improved corrections for temperature-to-polarization leakage, and polarization efficiency (PE) modelling. It enables full use of HFI polarization data, yielding 20–30% tighter ΛCDM constraints than TT-only, a τ constraint better than 15%, and internal consistency better than 0.5σ across implementations, while identifying residual PE modelling uncertainties as the dominant limitation. The likelihoods are positioned as the legacy Planck reference for cosmology.

Significance. If the central claims hold, this delivers the definitive Planck 2018 likelihoods that tighten cosmological parameter constraints by 20–30% through polarization inclusion and provide a benchmark reference for future CMB experiments. The extensive simulation-based consistency tests and cross-implementation comparisons add substantial value for model testing and parameter estimation.

major comments (1)
  1. [Abstract] Abstract (high-ℓ likelihood description): the paper identifies PE modelling accuracy as the main remaining limitation with residual uncertainties after T-to-P leakage and channel calibration corrections, yet does not show an explicit marginalization, covariance inflation, or propagation of these uncertainties into the final high-ℓ likelihood covariance; this is load-bearing for the claim that consistency remains better than 0.5σ and that the 20–30% improvement is robust.
minor comments (1)
  1. Ensure that all simulation and cross-check figures are accompanied by quantitative metrics (e.g., Δχ² or parameter shifts) rather than qualitative statements alone.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for the positive assessment and constructive comment on our manuscript. We address the major comment point by point below.

read point-by-point responses

  1. Referee: [Abstract] Abstract (high-ℓ likelihood description): the paper identifies PE modelling accuracy as the main remaining limitation with residual uncertainties after T-to-P leakage and channel calibration corrections, yet does not show an explicit marginalization, covariance inflation, or propagation of these uncertainties into the final high-ℓ likelihood covariance; this is load-bearing for the claim that consistency remains better than 0.5σ and that the 20–30% improvement is robust.

    Authors: We agree that the abstract does not explicitly describe marginalization or covariance inflation for residual PE uncertainties. In the manuscript, these uncertainties are instead bounded through extensive end-to-end simulations and direct comparisons between independent high-ℓ implementations (Plik and CamSpec). The tests confirm that residual effects on ΛCDM parameters remain below 0.5σ with no evidence of coherent bias, thereby supporting the robustness of the 20–30% improvement from polarization. We do not inflate the covariance because the simulations indicate the residuals act as additional scatter rather than systematic shifts. We will revise the abstract and relevant sections to clarify this simulation-based validation approach. revision: yes

Circularity Check

0 steps flagged

No significant circularity in likelihood construction from data

full rationale

The paper constructs the 2018 Planck CMB likelihoods directly from time-ordered observational data and external simulations, applying corrections for temperature-to-polarization leakage and polarization efficiency modeling at high multipoles while using a hybrid low/high-ℓ approach. No equations reduce reported constraints or consistency tests (e.g., <0.5σ level) to quantities defined by the fit itself, and no load-bearing steps rely on self-citations or ansatzes that collapse the derivation to its inputs. The central results remain independent of the fitted cosmological parameters.

Axiom & Free-Parameter Ledger

1 free parameters · 1 axioms · 0 invented entities

The analysis rests on standard CMB assumptions (Gaussian fluctuations, known foregrounds) and prior Planck instrument characterizations without introducing new free parameters or entities beyond calibration factors already present in earlier releases.

free parameters (1)
  • polarization efficiency factors
    Channel-specific calibration corrections applied to polarization spectra; values are determined from the data and simulations described in the analysis.
axioms (1)
  • domain assumption Gaussianity of CMB fluctuations and known foreground spectral behavior
    Implicit in the construction of the likelihood functions at both low and high multipoles.

pith-pipeline@v0.9.0 · 6648 in / 1281 out tokens · 50370 ms · 2026-05-15T21:53:13.209166+00:00 · methodology

discussion (0)

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

Forward citations

Cited by 42 Pith papers

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

  1. Late-time reconstruction of non-minimally coupled gravity with a smoothness prior

    astro-ph.CO 2026-05 unverdicted novelty 7.0

    Non-parametric reconstruction of non-minimally coupled gravity with a smoothness prior on CMB, DESI BAO, supernovae, and DES data yields a 2.8σ hint for coupling and a preference for phantom divide crossing stabilized...

  2. Kinematic Lensing Ratio: Reviving Weak Lensing Cosmography as a Geometric Dark Energy Probe

    astro-ph.CO 2026-04 unverdicted novelty 7.0

    KiLeR combines shear ratios with kinematic intrinsic shapes to mitigate first-order lensing systematics and forecasts a 192% improvement in dark energy constraints from the Roman telescope.

  3. Cosmological analysis of the DESI DR1 Lyman alpha 1D power spectrum

    astro-ph.CO 2026-01 unverdicted novelty 7.0

    DESI DR1 Lyman-alpha data yields Δ²★=0.379±0.032 and n★=-2.309±0.019 at k★=0.009 km⁻¹s and z=3, sharpening N_eff, α_s, and β_s constraints by factors of 1.18-1.90 when combined with other probes.

  4. DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations

    astro-ph.CO 2024-04 accept novelty 7.0

    First-year DESI BAO data are consistent with flat LambdaCDM and, when combined with CMB, show a 2.5-3.9 sigma preference for evolving dark energy (w0 > -1, wa < 0) that strengthens with certain supernova datasets.

  5. CMB Limits on the Absorption of Light Vector and Axial-Vector Dark Matter

    astro-ph.CO 2026-05 conditional novelty 6.0

    Planck CMB data set upper limits on vector and axial-vector dark matter-electron couplings for masses 100 eV to 100 keV via energy injection from inelastic scattering and hydrogen absorption.

  6. Axion dark matter from extended misalignment with a constant-$\omega_\phi$ pre-oscillatory phase and dark radiation

    astro-ph.CO 2026-04 unverdicted novelty 6.0

    The extended misalignment model with constant-ω_φ pre-oscillatory phase and dark radiation coupling is constrained by cosmological data to favor negative ω_φ and f_φ in [80, 1.5×10^10] TeV without resolving H0 or S8 tensions.

  7. Axion dark matter from extended misalignment with a constant-$\omega_\phi$ pre-oscillatory phase and dark radiation

    astro-ph.CO 2026-04 unverdicted novelty 6.0

    Extended misalignment for axion-like particles with constant-ω_ϕ pre-oscillation and dark radiation coupling yields data-driven constraints favoring negative ω_ϕ and f_ϕ in [80, 1.5×10^10] TeV but does not ease cosmol...

  8. Double the axions, half the tension: multi-field early dark energy eases the Hubble tension

    astro-ph.CO 2026-04 unverdicted novelty 6.0

    Two-field axion-like early dark energy reduces Hubble tension to 1.5 sigma residual and improves high-ell CMB fits over single-field models.

  9. Into the Gompverse: A robust Gompertzian reionization model for CMB analyses

    astro-ph.CO 2026-04 unverdicted novelty 6.0

    A Gompertzian reionization model with three nuisance parameters demotes optical depth to a derived quantity, reducing its uncertainty by a factor of three and revealing potential neutrino mass tension in CMB analyses.

  10. Non-minimally coupled quintessence with sign-switching interaction

    astro-ph.CO 2026-04 unverdicted novelty 6.0

    A new quintessence model with non-minimal coupling produces an effective sign-switching interaction that fits current data better than LambdaCDM or w0waCDM and accounts for late-time dark energy weakening without phan...

  11. Observational constraints on Luciano-Saridakis entropic cosmology

    astro-ph.CO 2026-03 unverdicted novelty 6.0

    First background-level constraints on Luciano-Saridakis entropic cosmology using CC, Pantheon+ with SH0ES, DESI DR2 BAO and compressed Planck data show robust fit, 2sigma exclusion of LambdaCDM, and potential Hubble t...

  12. A Spectrum of Cosmological Rips and Their Observational Signatures

    astro-ph.CO 2025-12 conditional novelty 6.0

    A unified dark energy model with sigmoid correction generates a spectrum of rip futures that all fit DESI, Pantheon+, and CMB data at the same level as ΛCDM.

  13. Generalized neutrino isocurvature

    hep-ph 2025-04 unverdicted novelty 6.0

    Generalizes neutrino isocurvature by introducing a mixing angle for the neutrino-matter perturbation ratio and derives first Planck limits on the angle.

  14. DESI 2024 VII: Cosmological Constraints from the Full-Shape Modeling of Clustering Measurements

    astro-ph.CO 2024-11 accept novelty 6.0

    DESI DR1 full-shape clustering yields Ω_m = 0.2962 ± 0.0095 and σ_8 = 0.842 ± 0.034 in flat ΛCDM, tightening to H_0 = 68.40 ± 0.27 km/s/Mpc with CMB and DESY3, while favoring w_0 > -1, w_a < 0 and limiting neutrino ma...

  15. Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing

    astro-ph.CO 2021-05 accept novelty 6.0

    DES Y3 3x2pt analysis constrains S8=0.776±0.017 and Ωm=0.339±0.032 in flat ΛCDM, consistent with Planck CMB results at p=0.13-0.48.

  16. Signatures of Modified Gravity Below $\mathcal{O}(10)$ Mpc in a Dynamical Dark Energy Background

    astro-ph.CO 2026-05 unverdicted novelty 5.0

    Modified gravity below O(10) Mpc in a CPL dynamical dark energy background is required to suppress structure growth at low redshifts while satisfying CMB constraints from ISW and lensing.

  17. The End of the First Act: Spectral Running, Interacting Dark Radiation, and the Hubble Tension in Light of ACT DR6 Data

    astro-ph.CO 2026-04 unverdicted novelty 5.0

    Including spectral running α_s, β_s and self-interacting dark radiation relaxes the ACT DR6 bound on ΔN_eff to <0.58 and lowers the Hubble tension to 2.2σ with three extra parameters.

  18. Generalizing the CPL Parametrization through Dark Sector Interaction

    astro-ph.CO 2026-04 unverdicted novelty 5.0

    Generalized interacting dark energy models with constant or dynamical couplings yield analytical density expressions but are not preferred over LambdaCDM by Bayesian evidence from DESI, Pantheon+, and CMB data.

  19. Generalizing the CPL Parametrization through Dark Sector Interaction

    astro-ph.CO 2026-04 unverdicted novelty 5.0

    Dynamical couplings in interacting dark energy models reduce deviations from LambdaCDM to 1.3-1.5 sigma and yield no Bayesian preference over the standard model.

  20. Cosmological Impact of Redshift-Dependent Type Ia Supernovae Calibration

    astro-ph.CO 2026-04 unverdicted novelty 5.0

    A phenomenological redshift-dependent SNIa magnitude correction shows no evidence in ΛCDM but is preferred at 4.3σ with dynamical dark energy, reducing Hubble tension to 1.5σ.

  21. A barotropic alternative to Early Dark Energy for alleviating the $H_0$ tension

    astro-ph.CO 2026-04 unverdicted novelty 5.0

    A barotropic fluid with ω_s ≈ 0.29 and Ω_s ≈ 1.5×10^{-5} raises the inferred H0 to match SH0ES while remaining consistent with Planck CMB, DESI BAO, and Pantheon data.

  22. Reconstructing inflationary features on large scales using genetic algorithm

    astro-ph.CO 2026-04 unverdicted novelty 5.0

    Genetic algorithm reconstructs single-field inflationary models with features in the scalar power spectrum that fit Planck 2018 CMB data better by Δχ² ≲ -10 and suggest alternative background parameters.

  23. The Bayesian view of DESI DR2 with unimpeded: Evidence and tension in a combined analysis with CMB and supernovae across cosmological models

    astro-ph.CO 2026-03 conditional novelty 5.0

    Bayesian evidence computation on DESI DR2 plus Planck and supernovae eliminates the frequentist 3.1 sigma preference for w0waCDM over LambdaCDM when using the DES-Dovekie recalibration, yielding ln B = -0.30 favoring ...

  24. Joint Constraints on Neutrinos and Dynamical Dark Energy in Minimally Modified Gravity

    astro-ph.CO 2026-01 unverdicted novelty 5.0

    The w†VCDM model shows a statistically significant preference for late-time quintessence-phantom crossing dark energy, raises the Hubble constant, and satisfies neutrino mass and Neff constraints from current cosmolog...

  25. Resolving the Planck-DESI tension by nonminimally coupled quintessence

    astro-ph.CO 2025-08 unverdicted novelty 5.0

    Non-minimally coupled quintessence resolves the Planck-DESI Ω_m tension at >3σ while the effective equation of state stays above w=-1 and other tensions on neutrino mass and growth rate are relieved.

  26. The CMB Cold Spot under the lens II: Lensing signatures in polarization and cosmic texture footprints

    astro-ph.CO 2025-05 unverdicted novelty 5.0

    Forecasts indicate Simons Observatory could reach 1.5-2.3 sigma sensitivity to sub-10 arcsecond lensing from a cosmic texture using temperature and polarization channels, with polarization boosting signal-to-noise by ...

  27. Constraints on Neutrino Physics from DESI DR2 BAO and DR1 Full Shape

    astro-ph.CO 2025-03 conditional novelty 5.0

    DESI DR2 BAO and full-shape data plus CMB yield ∑m_ν < 0.0642 eV (95% CL) under ΛCDM, in 3σ tension with oscillation lower limits, relaxed to <0.163 eV in w0waCDM.

  28. CMB lensing from Planck PR4 maps

    astro-ph.CO 2022-06 accept novelty 5.0

    Planck PR4 maps with optimal filtering yield CMB lensing amplitude 1.004 ± 0.024 and σ8 Ωm^0.25 = 0.599 ± 0.016, the tightest lensing constraint yet.

  29. 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.

  30. Determination of the best dark matter profile for the Milky Way with Gaia DR3 using Bayesian Model Comparison

    astro-ph.GA 2026-05 unverdicted novelty 4.0

    Bayesian comparison of Gaia DR3 rotation curves favors the Einasto dark matter profile over NFW, prefers cored over cuspy profiles, and finds MOND variants provide poorer fits than the best dark matter models.

  31. Single field matter bounce with dark energy era: comparison with CMB Planck 2018 data and best fit parameters

    astro-ph.CO 2026-05 conditional novelty 4.0

    A matter bounce model driven by a scalar field with exponential potential fits Planck 2018 CMB data comparably to inflationary ΛCDM, with the potential slope λ directly setting the scalar spectral index ns.

  32. The Status of Gravitational Vector Perturbations with Recent CMB Data

    astro-ph.CO 2026-05 unverdicted novelty 4.0

    Recent CMB datasets tighten 95% CL upper bounds on vector-mode amplitude r_v to 1.3e-4 (neutrino isocurvature), 6.8 (octupole), and 4.2 (sourced) at k=0.05 Mpc^-1, with no significant detection.

  33. How Complex is Dark Energy? A Bayesian Analysis of CPL Extensions with Recent DESI BAO Measurements

    astro-ph.CO 2025-11 unverdicted novelty 4.0

    Bayesian evidence from DESI BAO plus CMB and SN data favors the standard CPL evolving dark energy model over both simpler constant-w and more complex higher-order extensions.

  34. Constraints of dynamical dark energy models from different observational datasets

    astro-ph.CO 2025-10 conditional novelty 4.0

    Bayesian constraints on seven w(a) parameterizations with CMB+BAO+SNIa datasets favor the logarithmic model over LambdaCDM in several combinations and show modest sigma8 relief.

  35. New Insights into Dark Energy from DESI DR2 with CMB and SNIa

    astro-ph.CO 2025-07 unverdicted novelty 4.0

    Systematic dataset swaps show DESY5 low-redshift SNIa, Planck CMB plus lensing, and DESI-DR2 BAO as the dominant sources of w0waCDM tension with ΛCDM, while other combinations remain consistent.

  36. Cosmic Strings as Dynamical Dark Energy: Novel Constraints

    astro-ph.CO 2025-05 conditional novelty 4.0

    Cosmic string networks are constrained to less than ~1% of the energy density using CMB+BAO+SN data, with some models preferring mildly negative densities but no Bayesian evidence favoring them over LambdaCDM.

  37. Extended Dark Energy analysis using DESI DR2 BAO measurements

    astro-ph.CO 2025-03 conditional novelty 4.0

    Extended analysis of DESI DR2 data confirms robust evidence for dynamical dark energy with phantom crossing preference, stable under parametric and non-parametric modeling.

  38. MUltiplexed Survey Telescope (MUST) Science White Paper I: Overview of Large-Scale Structure Cosmology in the Era of Stage-V Spectroscopic Surveys

    astro-ph.CO 2024-11 unverdicted novelty 4.0

    MUST is a planned 6.5m Stage-V spectroscopic survey telescope targeting 100M+ galaxies and quasars to z~5.5 for large-scale structure cosmology studies.

  39. Constraints on Primordial Black Holes

    astro-ph.CO 2020-02 accept novelty 4.0

    Updated compilation shows PBHs are tightly constrained across 55 orders of magnitude in mass, ruling out dominant dark matter contributions except in narrow windows, with many limits carrying observational uncertainties.

  40. cloelike: A Python Library for Cosmological Likelihood Inference in the Euclid Era

    astro-ph.CO 2026-05 unverdicted novelty 3.0

    cloelike is a new open Python package implementing composable Gaussian likelihoods for WL, GCph, GGL, full-shape spectra, and BAO in joint probe combinations for Euclid analyses.

  41. CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

    astro-ph.CO 2022-05 accept novelty 3.0

    Planck PR4 NPIPE maps processed with CamSpec produce LCDM parameters consistent with 2018 results but with ~10% tighter constraints and shifts toward LCDM values for extensions like Omega_K and A_Lens.

  42. 2020 Global reassessment of the neutrino oscillation picture

    hep-ph 2020-06 unverdicted novelty 3.0

    Updated global fit of neutrino oscillation data gives precise measurements of mixing parameters with a 2.5 sigma preference for normal mass ordering.