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Large-Scale Structure with Gravitational Waves II: Shear

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arxiv 1205.1514 v3 pith:6EREFEWO submitted 2012-05-07 astro-ph.CO gr-qc

Large-Scale Structure with Gravitational Waves II: Shear

Fabian Schmidt , Donghui Jeong This is my paper
classification astro-ph.CO gr-qc
keywords alignmentcontributiongravitationalmodessheartensorgalaxyintrinsic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The B-(curl-)mode of the correlation of galaxy ellipticities (shear) can be used to detect a stochastic gravitational wave background, such as that predicted by inflation. In this paper, we derive the tensor mode contributions to shear from both gravitational lensing and intrinsic alignments, using the gauge-invariant, full-sky results of arXiv:1204.3625. We find that the intrinsic alignment contribution, calculated using the linear alignment model, is larger than the lensing contribution by an order of magnitude or more, if the alignment strength for tensor modes is of the same order as for scalar modes. This contribution also extends to higher multipoles. These results make the prospects for probing tensor modes using galaxy surveys less pessimistic than previously thought, though still very challenging.

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Cited by 3 Pith papers

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

  1. Tracing Primordial Gravitational Waves via non-Gaussian Signatures of Halo Bias

    astro-ph.CO 2026-05 unverdicted novelty 7.0

    Tensor-induced non-Gaussianity from primordial gravitational waves generates a unique scale-dependent halo bias correction that can reach order-one amplitude for rare high-redshift halos at z=7.

  2. Parity Violation in Galaxy Shapes: Primordial Non-Gaussianity

    astro-ph.CO 2025-09 conditional novelty 6.0

    The parity-odd intrinsic alignment power spectrum probes the collapsed limit of the parity-odd primordial trispectrum and can tighten constraints on parity-violating PNG when bias parameters are calibrated from N-body...

  3. Sensitivity of Weak Lensing Surveys to Gravitational Waves from Inspiraling Supermassive Black Hole Binaries

    astro-ph.CO 2025-12 unverdicted novelty 4.0

    Weak lensing surveys cannot detect nanohertz-microhertz gravitational waves from supermassive black hole binaries under realistic conditions; only unattainable idealized surveys could probe this band.