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Constraints on cosmology beyond ΛCDM with kinetic Sunyaev Zel'dovich velocity reconstruction

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arxiv 2408.05264 v1 pith:763RGN7I submitted 2024-08-09 astro-ph.CO

Constraints on cosmology beyond ΛCDM with kinetic Sunyaev Zel'dovich velocity reconstruction

classification astro-ph.CO
keywords lesssimconfidencedovichkineticreconstructionsunyaevanisotropiesconstraints
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Kinetic Sunyaev Zel'dovich velocity reconstruction uses the statistically anisotropic cross-correlation between cosmic microwave background (CMB) temperature anisotropies and a galaxy survey to reconstruct the remotely observed CMB dipole. Using a reconstruction based on data from $\textit{Planck}$ and unWISE, we rule out non-linear Gpc-scale voids, provide the tightest constraint on the intrinsic dipole ($<14 \ {\rm km/s}$ at $68\%$ confidence), rule out matter-radiation isocurvature as an explanation of discrepancies between the measured CMB and galaxy number count dipoles, and constrain the amplitude of local-type primordial non-Gaussianity ($-220\lesssim f_{\rm NL}\lesssim 136$ at $68\%$ confidence) and compensated isocurvature ($-147\lesssim A_{\rm CIP} \lesssim 281$ at $68\%$ confidence). This representative set of constraints on beyond-$\Lambda$CDM scenarios demonstrates the breadth of fundamental science possible with measurements of secondary CMB anisotropies such as the kinetic Sunyaev Zel'dovich effect.

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Cited by 6 Pith papers

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

  1. Measurement of the galaxy-velocity power spectrum of DESI tracers with the kinematic Sunyaev-Zeldovich effect using DESI DR2 and ACT DR6

    astro-ph.CO 2026-04 unverdicted novelty 7.0

    DESI DR2 and ACT DR6 data yield 17σ LRG-velocity, 8.3σ ELG-velocity, and 6.8σ QSO-velocity detections plus a 3.1σ velocity-velocity signal, producing f_NL^loc = 15.9_{-34.4}^{+34.6} from the velocity field.

  2. Constraints on the remote quadrupole field from the polarized Sunyaev Zel'dovich effect

    astro-ph.CO 2026-07 conditional novelty 6.0

    A first pSZ bispectrum search with Planck/ACT and unWISE/CIB data finds no signal, giving b_q=1.02±2.64 and τ_rei=−0.01±0.14.

  3. Measuring cosmic bulk flow with kinetic Sunyaev-Zel'dovich velocity reconstruction

    astro-ph.CO 2026-05 unverdicted novelty 6.0

    Kinetic Sunyaev-Zel'dovich reconstruction from WISExSuperCOSMOS and unWISE galaxies with Planck data yields tight upper limits on bulk velocities consistent with LambdaCDM out to 2000 h^{-1} Mpc while showing tension ...

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    Fisher-matrix forecasts for LSST- and CMB-S4-like surveys show kSZ tomography tightens constraints on dark energy parameters w0 and wa by 15% and 32% while assessing detectability of perturbations for different sound speeds.

  5. New constraints on primordial non-Gaussianity from large-scale cross-correlations of CMB lensing and the cosmic infrared background

    astro-ph.CO 2026-05 unverdicted novelty 4.0

    Dust-cleaned CIB and CMB lensing cross-correlations yield f_NL^local = 43 ± 23, tightening constraints on local primordial non-Gaussianity.

  6. The large scale structure probes of dark energy

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