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GW_CLASS: Cosmological Gravitational Wave Background in the Cosmic Linear Anisotropy Solving System

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arxiv 2305.01602 v2 pith:MQPT6PRY submitted 2023-05-02 gr-qc astro-ph.CO

classification gr-qcastro-ph.CO
keywords gravitationalbackgroundcosmologicalwaveanisotropiesclasscgwbcosmic
verification ladder T0 review T1 audit T2 compute T3 formal
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The anisotropies of the Cosmological Gravitational Wave Background (CGWB) retain information about the primordial mechanisms that source the gravitational waves and about the geometry and the particle content of the universe at early times. In this work, we discuss in detail the computation of the angular power spectra of CGWB anisotropies and of their cross correlation with Cosmic Microwave Background (CMB) anisotropies, assuming different processes for the generation of these primordial signals. We present an efficient implementation of our results in a modified version of CLASS which will be publicly available. By combining our new code GW_CLASS with MontePython, we forecast the combined sensitivity of future gravitational wave interferometers and CMB experiments to the cosmological parameters that characterize the cosmological gravitational wave background.

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Cited by 3 Pith papers

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

  1. Inferring the stochastic gravitational-wave background from eccentric stellar-mass binary black holes with spaceborne detectors

    gr-qc 2025-10 conditional novelty 6.0 of 10

    Eccentric black-hole-binary backgrounds from globular clusters and isolated evolution would look like power-law noise for TianQin/LISA/Taiji, but AGN-formed binaries produce a turnover that LISA and Taiji can distinguish.

  2. Imprints of Large-Scale Structures in the Anisotropies of the Cosmological Gravitational Wave Background

    astro-ph.CO 2025-05 conditional novelty 6.0 of 10

    The cosmological gravitational wave background is predicted to cross-correlate with galaxy positions through the late integrated Sachs-Wolfe effect, giving a source-discrimination handle and a forecast improvement of ...

  3. \texttt{GWBird}: a toolkit for the characterization of the Stochastic Gravitational Wave Background for Ground, Space, and Pulsar Timing Array detectors

    astro-ph.IM 2025-07 conditional novelty 5.0 of 10

    A new, unified Python package computes overlap reduction functions, power-law integrated sensitivity curves, and angular sensitivity curves for ground, space, and pulsar timing array detectors across all gravitational...

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