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Found 8 papers, 5 papers with code
Power Spectrum of Intrinsic Alignments of Galaxies in IllustrisTNG
The shape of massive disk- and spheroid-galaxies tend to align with the tidal field.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics
Impacts of pre-initial conditions on anisotropic separate universe simulations: a boosted tidal response in the epoch of reionization
To generate initial conditions for cosmological $N$-body simulations, one needs to prepare a uniform distribution of simulation particles, so-called the pre-initial condition (pre-IC).
Cosmology and Nongalactic Astrophysics
Blinded challenge for precision cosmology with large-scale structure: results from effective field theory for the redshift-space galaxy power spectrum
An accurate theoretical template for the galaxy power spectrum is a key for the success of ongoing and future spectroscopic surveys.
Cosmology and Nongalactic Astrophysics
Noise reduction for weak lensing mass mapping: An application of generative adversarial networks to Subaru Hyper Suprime-Cam first-year data
We study the non-Gaussian information in denoised maps using one-point probability distribution functions (PDFs) and also perform matching analysis for positive peaks and massive clusters.
Perturbation theory challenge for cosmological parameters estimation - I. Matter power spectrum in real space
We study the accuracy with which cosmological parameters can be determined from real space power spectrum of matter density contrast at weakly nonlinear scales using analytical approaches.
Cosmology and Nongalactic Astrophysics
Full-sky Gravitational Lensing Simulation for Large-area Galaxy Surveys and Cosmic Microwave Background Experiments
The data sets include full-sky convergence and shear maps from redshifts $z=0. 05$ to $5. 3$ at intervals of $150 \, h^{-1}{\rm Mpc}$ comoving radial distance (corresponding to a redshift interval of $\Delta z \simeq 0. 05$ at the nearby universe), enabling the construction of a mock shear catalog for an arbitrary source distribution up to $z=5. 3$.
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
Revising the Halofit Model for the Nonlinear Matter Power Spectrum
The simulation results are used to re-calibrate the fitting parameters of the halofit model so as to reproduce small-scale power spectra of the $N$-body simulations, while keeping the precision at large scales.
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
RegPT: Direct and fast calculation of regularized cosmological power spectrum at two-loop order
The fortran program with which direct and fast calculations of power spectra can be done, RegPT, is publicly released as part of this paper.
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
