Table · dataset · 2026
CDDR-Test: Testing Cosmic Distance Duality Relation and transparency with DESI DR2
Listed in ScienceDB
Including data, code, chains and figures published in the CDDR_Test repository of paper arXiv:2506.17926.This repository implements an analysis pipeline to test the Etherington reciprocity theorem (η = D_L / [(1+z)² D_A] = 1) by combining DESI BAO measurements with Pantheon+ Type Ia Supernovae data.
Description
The framework uses Free-Knots Method (FKM) and Gaussian Process Regression (GPR) with multiple kernel choices (RBF, Matérn, RQ, DSE) to reconstruct cosmological distances without assuming a specific cosmological model.
It mainly includes:Data Processing (data-process.ipynb): Kernel selection and redshift matching between BAO and SN data η Measurement (cddr-measurement.ipynb): Testing the distance duality relation with different M_B priors Parametric Constraints (parametric-constraints.ipynb): Joint cosmological parameter estimation Transparency Tests (transparency.ipynb, ALPandMCP.ipynb): Searching for deviations from η = 1 that could indicate photon-axion conversion or other non-transparent effects
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.41486 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
- Inferred from text
- Astronomical sciences 73%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.41486 | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · scidb cn | taxonomy-embedding@1.0.0 | title+keywords+description (73%) |
| concepts[field].local:field:astronomy | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/rights |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |