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Cosmicflows-3
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Cosmicflows-3
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The Cosmicflows database of galaxy distances that in the 2nd edition contained 8,188 entries is now expanded to 17,669 entries. The major additions are 2,257 distances that we have derived from the correlation between galaxy rotation and luminosity with photometry at 3.6 microns obtained with Spitzer Space Telescope and 8,885 distances based on the Fundamental Plane methodology from the 6dFGS collaboration. There are minor augmentations to the Tip of the Red Giant Branch and Type Ia supernova compilations. A zero point calibration of the supernova luminosities give a value for the Hubble Constant of 76.2 +-3.4(r) +-2.7(s) km/s/Mpc. Alternatively, a restriction on the peculiar velocity monopole term representing global infall/outflow implies H_0 = 75 +-2 km/s/Mpc.
Forward citations
Cited by 6 Pith papers
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Consistency of DES and DESI distances and the Standard Cosmological Model
DESI recovers the CMB-constrained parameter combination at sub-percent precision; high-redshift DES supernovae fit flat Lambda CDM while a 0.05 mag offset in the low-redshift anchor sample may be systematic, supportin...
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The Manticore Project II: Bayesian digital twins of cosmic structure across the SDSS and BOSS volumes
Manticore-Deep uses tiled Bayesian field-level inference on SDSS and BOSS data to produce posterior ensembles of 3D cosmic fields that are consistent with LCDM and validated by 7.4σ CMB lensing and 3.5σ kSZ detections.
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Expected redshift drift for tilted observers
Redshift drift for tilted observers consists of an FLRW background term plus directional corrections from peculiar expansion, projected shear, and acceleration along the line of sight.
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Impact of inhomogeneous curvature on growth rate measurements from magnitude fluctuations
Full-GR simulations find that inhomogeneous curvature produces only sub-dominant systematic offsets in growth-rate measurements from magnitude fluctuations at z ≲ 0.2 relative to current statistical errors.
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SN 2023rve: A Type II Supernova with No Nebular Oxygen
SN 2023rve exhibits absent [O I] nebular lines with inferred 14-18 solar mass progenitor, 0.27e51 erg explosion energy, and 0.0064 solar mass nickel, possibly indicating partial fallback.
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Updates on dipolar anisotropy in local measurements of the Hubble constant from Cosmicflows-4
Local Hubble constant anisotropy in Cosmicflows-4 data is primarily attributed to peculiar velocities and survey structure rather than cosmic-scale isotropy violation, with limited implications for the Hubble tension.
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