Pith. sign in

REVIEW 3 cited by

Relativistic and wide-angle corrections to galaxy power spectra

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 2406.06274 v2 pith:3YFYQHKH submitted 2024-06-10 astro-ph.CO

Sheean Jolicoeur , Sêcloka L. Guedezounme , Roy Maartens , Pritha Paul , Chris Clarkson , Stefano Camera This is my paper · ORCID
classification astro-ph.CO
keywords galaxyrelativisticwide-anglespectracorrectionsdetectioneffectsline
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

Galaxy surveys contain information on the largest scales via wide-angle and relativistic contributions. By combining two different galaxy populations, we can suppress the strong cosmic variance on ultra-large scales and thus enhance the detectability of the signals. The relativistic Doppler and Sachs-Wolfe effects are of a similar magnitude to the leading wide-angle corrections, so that it is important to treat them together, especially since they can partially cancel. The power spectra depend on the choice of line of sight for each galaxy pair and we present results for a general line of sight. Then we estimate the detection significance of the auto- and cross-power spectra for a variety of cases. We use two futuristic galaxy samples based on a `beyond-DESI' survey and a SKA Phase 2 survey, covering 15,000\,deg$^2$ up to $z=1$. We find a detection significance for the total relativistic wide-angle effects that ranges from $\sim 5\sigma$ to $>15\sigma$, depending on the line-of-sight configuration.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 3 Pith papers

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

  1. The observer power spectrum for lightcone statistics, integrated relativistic observables and wide angle effects

    astro-ph.CO 2026-05 unverdicted novelty 6.0 of 10

    Introduces the observer power spectrum as a diagonal Fourier-space statistic for lightcone observables by transforming over observer positions rather than sources.

  2. Unbiased analysis of primordial non-Gaussianity: the multipoles of the full relativistic power spectrum

    astro-ph.CO 2025-11 conditional novelty 6.0 of 10

    Integrated relativistic (lensing, ISW, time-delay) corrections to power-spectrum multipoles bias predicted f_NL constraints by ~3σ (Euclid) and ~20σ (MegaMapper); a bright-faint split partly offsets the luminosity-fun...

  3. Primordial non-Gaussianity -- the effects of relativistic and wide-angle corrections to the power spectrum

    astro-ph.CO 2024-12 conditional novelty 5.0 of 10

    Including the quadrupole in power-spectrum forecasts improves f_NL precision by 45% to 63%, while neglected relativistic and wide-angle corrections shift f_NL by up to 0.6 sigma for MegaMapper.

Pith tools