The ACCELERATION programme: I. Cosmology with the redshift drift

Abstract

Detecting the change of a cosmological object's redshift due to the time evolution of the Universal expansion rate is an ambitious experiment that will be attempted with future telescope facilities. In this paper, we describe the ACCELERATION programme, which aims to study the properties of the most underdense regions of the Universe. One of the highlight goals of this programme is to prepare for the redshift drift measurement. Using the EAGLE cosmological hydrodynamic simulations, we estimate the peculiar acceleration of gas in galaxies and in the Lya forest. We find that star-forming 'cold neutral gas' exhibits large peculiar acceleration due to the high local density of baryons near star-forming regions. We conclude that absorption by cold neutral gas is unlikely to yield a detection of the cosmological redshift drift. On the other hand, we find that the peculiar accelerations of Lya forest absorbers are more than an order of magnitude below the expected cosmological signal. We also highlight that the numerous low H I column density systems display lower peculiar acceleration. Finally, we propose a new 'Lya cell' technique that applies a small correction to the wavelength calibration to secure a relative measurement of the cosmic drift between two unrelated cosmological sources at different redshifts. For suitable combinations of absorption lines, the cosmological signal can be more than doubled, while the affect of the observer peculiar acceleration is mitigated. Using current data of four suitable Lya cells, we infer a limit on the cosmological redshift drift to be dv/dt_obs < 65 m/s/year (2 sigma).

15 pages, 9 figures, Accepted for publication in Monthly Notices of the Royal Astronomical Society

References in corpus (43)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Radiative transfer in a clumpy universe: IV. New synthesis models of the cosmic UV/X-ray background
• Metallicity of the intergalactic medium using pixel statistics. II. The distribution of metals as traced by C IV
• P3M-SPH simulations of the Lyman-alpha Forest
• The Physics of the Intergalactic Medium
• Precision measures of the primordial abundance of deuterium
• Model-independent insights into the nature of the Lyman-alpha forest and the distribution of matter in the universe
• High-precision wavelength calibration of astronomical spectrographs with laser frequency combs
• Cosmic dynamics in the era of Extremely Large Telescopes
• Gamma-Ray Bursts From Neutron Star Phase Transitions
• Direct Measurement of Cosmological Parameters from the Cosmic Deceleration of Extragalactic Objects
• Gaia Data Release 2: The Celestial reference frame (Gaia-CRF2)
• The fundamental definition of 'radial velocity'
• The intergalactic medium over the last 10 billion years I: Lyman alpha absorption and physical conditions
• The UVES Large Program for Testing Fundamental Physics II: Constraints on a Change in μ Towards Quasar HE 0027-1836
• Impact of instrumental systematic errors on fine-structure constant measurements with quasar spectra
• The UVES Spectral Quasar Absorption Database (SQUAD) Data Release 1: The first 10 million seconds
• Exploring the Dark Energy Redshift Desert with the Sandage-Loeb Test
• Trident: a universal tool for generating synthetic absorption spectra from astrophysical simulations
• Reproducing the Kinematics of Damped Lyman-alpha Systems
• Spectroscopy of the Double Quasars Q1343+266AB: I. a New Determination of the Size of Lyman-Alpha Forest Absorbers
• The First Data Release of the KODIAQ Survey
• The Second Data Release of the KODIAQ Survey
• Wavelength Calibration of the VLT-UVES Spectrograph
• Three Dimensional Hydrodynamic Simulations of Multiphase Galactic Disks with Star Formation Feedback: II. Synthetic HI 21 cm Line Observations
• Clustering of Local Group distances: publication bias or correlated measurements? IV. The Galactic Center
• Toward a Direct Measurement of the Cosmic Acceleration
• The Size and Nature of Lyman alpha Forest Clouds Probed by QSO Pairs and Groups
• Tomography of the intergalactic medium with Ly-alpha forests in close QSO pairs
• A new wavelength calibration for echelle spectrographs using Fabry-Perot etalons
• Expansion and Collapse in the Cosmic Web
• Giving Cosmic Redshift Drift a Whirl
• Echelle Spectroscopy of QSO Absorption Line Systems with Metals in the Direction of HS 1700+6416
• Forecasts of redshift drift constraints on cosmological parameters
• New wavelength calibration of the HARPS spectrograph
• Measurement of the solar system acceleration using the Earth scale factor
• Peculiar acceleration
• Toward a direct measurement of the cosmic acceleration: roadmap and forecast on FAST
• The UV spectrum of HS1700+6416 I. Predicting the metal line content of the far UV spectrum
• Photon-weighted barycentric correction and its importance for precise radial velocities
• SPH to Grid: a new integral conserving method
• Astro2020 White Paper: A Direct Measure of Cosmic Acceleration

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• Redshift drift effect through the observation of HI 21cm signal with SKA
• A Comparative Test of the LCDM and R_h=ct Cosmologies Based on Upcoming Redshift Drift Measurements
• Redshift Drift fluctuations from N-body simulations
• FLRW Kinematic-Induced Measurement of the Hubble Constant from Cosmic Chronometer and Redshift Drift Observations
• Closing the cosmological loop with the redshift drift
• Estimating constraints on cosmological parameters via the canonical and the differential redshift drift with SKA HI 21-cm observations