Selected project writeups on the Aquila Consortium projects page:
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A 1.8% measurement of the Hubble constant from Cepheids alone
A new Cepheid-only Bayesian distance ladder yields H₀ = 71.7 ± 1.3 km/s/Mpc, reinforcing the Hubble tension without relying on supernovae.
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Field-level large-scale structure meets the CMB
CSiBORG reconstructions of the local Universe are compared with CMB thermal Sunyaev-Zel'dovich measurements, recovering galaxy clusters in their correct positions and with their correct halo masses.
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Constraining dark matter annihilation and decay in large-scale structures
A full-sky, field-level search in the nearby Universe finds no evidence for dark matter annihilation or decay; the residual gamma-ray signal is more consistent with a baryonic origin.
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Testing gravity with the positions of supermassive black holes
Constrained simulations map scalar fields in galileon gravity and use galaxy-SMBH position offsets to constrain the coupling strength of fifth forces.
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A fifth-force resolution of the Hubble tension
Screened fifth forces could bias Cepheid distance calibrations and reduce the Hubble tension from 4.4σ to 1.5σ.
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Fifth force on galaxy cluster scale
Combining BORG-PM field-level reconstructions with small-scale modelling of the gravitational field yields the tightest bound on fifth-force-class modified-gravity models.