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Bayesian noise wave calibration for 21-cm global experiments
I. L. V. Roque, W. J. Handley, N. Razavi-Ghods
Detection of millikelvin-level signals from the 'Cosmic Dawn' requires an unprecedented level of sensitivity and systematic calibration. We report the theory behind a novel calibra…
Global Analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey
F. Lienhard, D. Queloz, M. Gillon +10
We conducted a global analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey - a prototype of the SPECULOOS transit search conducted with the TRAPPIST-South robotic telescope in…
Planck intermediate results. LVII. Joint Planck LFI and HFI data processing
Planck Collaboration, Y. Akrami, K. J. Andersen +136
We present the NPIPE processing pipeline, which produces calibrated frequency maps in temperature and polarization from data from the Planck Low Frequency Instrument (LFI) and High…
Mapping Poincaré gauge cosmology to Horndeski theory for emergent dark energy
W. E. V. Barker, A. N. Lasenby, M. P. Hobson +1
The ten-parameter, quadratic Poincaré gauge theory of gravity is a plausible alternative to general relativity. We show that the rich background cosmology of the gauge theory is de…
Planck intermediate results. LVI. Detection of the CMB dipole through modulation of the thermal Sunyaev-Zeldovich effect: Eppur si muove II
Planck Collaboration, Y. Akrami, M. Ashdown +126
The largest temperature anisotropy in the cosmic microwave background (CMB) is the dipole, which has been measured with increasing accuracy for more than three decades, particularl…
Addressing tension with emergent dark radiation in unitary gravity
W. E. V. Barker, A. N. Lasenby, M. P. Hobson +1
We propose a one-parameter extension to CDM, expected to strongly affect cosmological tensions. An effective dark radiation component in the early universe redshifts away as hot…
Quantum initial conditions for inflation and canonical invariance
F. J. Agocs, L. T. Hergt, W. J. Handley +2
We investigate the transformation of initial conditions for primordial curvature perturbations under two types of transformations of the associated action: simultaneous redefinitio…