Ray-tracing through the Millennium Simulation: Born corrections and lens-lens coupling in cosmic shear and galaxy-galaxy lensing

By Stefan Hilbert, J. Hartlap, Simon D. M. White, P. Schneider. 2008

260 citations recorded by the source corpus.

Context. Weak-lensing surveys need accurate theoretical predictions for interpretation of their results and cosmologicalparameter estimation. Aims. We study the accuracy of various approximations to cosmic shear and weak galaxy-galaxy lensing and investigate eects of Born corrections and lens-lens coupling. Methods. We use ray-tracing through the Millennium Simulation, a large N-body simulation of cosmic structure formation, to calculate various cosmic-shear and galaxy-galaxy-lensing statistics. We compare the results from ray-tracing to semi-analytic predictions. Results. (i) We conrm

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/667cfa69e09eaaf3086d04198c41c9d8f59ab7db

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Citations in the corpus

TDCOSMO IV: Hierarchical time-delay cosmography -- joint inference of the Hubble constant and galaxy density profiles (2020, methodology): “The Hilbert et al. (2009) maps were computed for a range of source redshift planes.”
Massive neutrinos and the non‐linear matter power spectrum (2011, methodology): “This is not due to neutrino physics, but is a discrepancy induced because, as found by Hilbert et al. (2009), HALOFIT under-predicts the growth of non-linear power for k > 2hMpc−1 in a ΛCDM universe by up to a factor of two.”
COSMOLOGY FROM GRAVITATIONAL LENS TIME DELAYS AND PLANCK DATA (2013, methodology): “Following SU13, we construct the PDF of κext by ray tracing through the Millennium Simulation (Springel et al. 2005; Hilbert et al. 2009), selecting lines of sight in the simulations with a galaxy count around the lens system that is 1.4 times the average (measured by Fassnacht et al. 2011), and…”
A SHARP view of H0LiCOW: H0 from three time-delay gravitational lens systems with adaptive optics imaging (2019, methodology): “We thus use the results of ray-tracing by Hilbert et al. (2009) through the Millennium Simulation (Springel et al. 2005) to statistically estimate the mass contribution along the line of sight to our lenses.”
CFHTLenS tomographic weak lensing cosmological parameter constraints: Mitigating the impact of intrinsic galaxy alignments (2013, background): “These can be populated to emulate the survey geometry, masks, redshift distribution, galaxy number density and intrinsic ellipticity and shape measurement noise for the survey (Hilbert et al. 2009; Vafaei et al. 2010; Kiessling et al. 2011; Harnois-Déraps et al. 2012).”
H0LiCOW - IV. Lens mass model of HE 0435-1223 and blind measurement of its time-delay distance for cosmology (2016, methodology): “…are MNRAS 000, 1–22 (2016) computed assuming the cosmology of the Millennium Simulation (H0 = 73 km s −1 Mpc−1, Ωm = 0.25, ΩΛ = 0.75; Springel et al. 2005; Hilbert et al. 2009), but we verify that for alternative cosmologies, their stellar masses change by < 0.02 dex, and the ratios of their…”
REVISING THE HALOFIT MODEL FOR THE NONLINEAR MATTER POWER SPECTRUM (2012, result): “…it has been reported that the model fails to reproduce recent high-resolution N-body simulation results at small scales (e.g., Springel et al. 2005; Hilbert et al. 2009; Sato et al. 2009; Boylan-Kolchin et al. 2009; Takahashi et al. 2011a; Kiessling et al. 2011; Valageas & Nishimichi 2011a, 2011b;…”
H0LiCOW - V. New COSMOGRAIL time delays of HE 0435-1223: H0 to 3.8 per cent precision from strong lensing in a flat ΛCDM model (2016, methodology): “…the lens environment (e.g. Fassnacht et al. 2006; Wong et al. 2011), comparisons between galaxy number counts in the real data and in simulations (Hilbert et al. 2007, 2009; Fassnacht et al. 2011; Collett et al. 2013; Greene et al. 2013; Suyu et al. 2013; McCully et al. 2016) or using…”
Cosmology with the shear-peak statistics (2009, background): “With this, a set of light rays (forming a grid in the image plane) can be propagated from the observer through the array of lens planes using a recursion formula (see Hilbert et al. 2009).”
SIMULATIONS OF WIDE-FIELD WEAK LENSING SURVEYS. I. BASIC STATISTICS AND NON-GAUSSIAN EFFECTS (2009, methodology): “…for weak-lensing surveys is to perform ray-tracing simulations through large-volume, highresolution N -body simulations of cosmic structure formation (Jain et al. 2000; Hamana & Mellier 2001; Vale & White 2003; White & Vale 2004; Fosalba et al. 2008; Teyssier et al. 2009; Hilbert et al. 2009).”
The effects of galaxy formation on the matter power spectrum: a challenge for precision cosmology (2011, methodology): “These models improve on the HALOFIT model by including a variable concentration-mass relation (such as those derived by Neto et al. 2007; Duffy et al. 2008) and have been shown to reproduce the power spectra from simulations with higher accuracy (e.g. Hilbert et al. 2009).”
Constraining primordial non-Gaussianity with future galaxy surveys (2011, unknown): “9 in Hilbert et al. (2009)).”
Constraints on intrinsic alignment contamination of weak lensing surveys using the MegaZ-LRG sample (2010, background): “Most astrophysical sources of systematic errors such as the limited accuracy of N-body simulations (e.g. Hilbert et al. 2009) and baryonic eff cts on structure growth (e.g. White 2004) are currently subdominant and can, like the technical systematics, largely be reduced by more powerful…”
DISSECTING THE GRAVITATIONAL LENS B1608+656. II. PRECISION MEASUREMENTS OF THE HUBBLE CONSTANT, SPATIAL CURVATURE, AND THE DARK ENERGY EQUATION OF STATE (2009, methodology): “…by the appropriate distance ratios and summed: rather, the deflection angles (which can be large) need to be taken into account when calculating the distortion matrices (which contain and define the external convergence and shear), leading us towards a ray-tracing approach (Hilbert et al. 2009).”
Galaxy Alignments: An Overview (2015, background): “To very good approximation, lensing only generates E-modes (Hilbert et al. 2009), so that a B-mode correlation signal would indicate the presence of systematic effects.”
Time delay cosmography (2016, methodology): “The external convergence in the simulated fields was calculated by ray-tracing by Hilbert et al. (2009), and the comparison in galaxy overdensity was enabled by the analysis of galaxy number counts in archival HST images by Fassnacht et al. (2011), who found that the B1608 + 656 field was overdense…”
Numerical simulations of the dark universe: State of the art and the next decade (2012, methodology): “which is normally taken from fitting formulae calibrated using predictions of DM simulations [232–236].”
KiDS+VIKING-450: Cosmic shear tomography with optical and infrared data (2018, background): “Cosmological B-modes can be produced from higher-order terms beyond the first-order Born approximation (Schneider et al. 1998; Hilbert et al. 2009), source clustering of galaxies and intrinsic alignments (Schneider et al. 2002), as well as cosmic strings and some alternatives to ΛCDM (see for…”