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COFFE: a code for the full-sky relativistic galaxy correlation function

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arxiv 1806.11090 v1 pith:WMZ53QS2 submitted 2018-06-28 astro-ph.CO

classification astro-ph.CO
keywords functioncodecoffecorrelationmultipolestwo-pointfull-skygalaxy
verification ladder T0 review T1 audit T2 compute T3 formal
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We present a public version of the code COFFE (COrrelation Function Full-sky Estimator) available at https://github.com/JCGoran/coffe. The code computes the galaxy two-point correlation function and its multipoles in linear perturbation theory, including all relativistic and wide angle corrections. COFFE also calculates the covariance matrix for two physically relevant estimators of the correlation function multipoles. We illustrate the usefulness of our code by a simple but relevant example: a forecast of the detectability of the lensing signal in the multipoles of the two-point function. In particular, we show that lensing should be detectable in the multipoles of the two-point function, with a signal-to-noise larger than 10, in future surveys like Euclid or the SKA.

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Cited by 4 Pith papers

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

  1. Impact and measurability of linear relativistic effects in galaxy surveys

    astro-ph.CO 2026-07 accept novelty 6.0 of 10

    Neglecting linear GR effects biases f_NL at 1–3σ for Euclid/SPHEREx in SFB forecasts; multi-tracer improves Doppler detection and weakly breaks b_ϕ f_NL degeneracy.

  2. 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.

  3. Gravitational redshift from large-scale structure: nonlinearities, antisymmetries, and the dipole

    astro-ph.CO 2025-06 conditional novelty 6.0 of 10

    A wide-angle streaming model including gravitational redshift, lightcone and kinematic effects explains the dipole turnover at ~20 h^-1 Mpc as an advection-like shift driven by the density-weighted pairwise potential ...

  4. 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.

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