L-PICOLA: A parallel code for fast dark matter simulation
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TLDR
Compared to fully non-linear N-Body simulations, the L-PICOLA code can reproduce the z = 0 power spectrum and reduced bispectrum of dark matter to within 2% and 5% respectively on all scales of interest to measurements of Baryon Acoustic Oscillations and Redshift Space Distortions, but 3 orders of magnitude faster.About:
This article is published in Astronomy and Computing.The article was published on 2015-09-01 and is currently open access. It has received 135 citations till now. The article focuses on the topics: Dark matter & Baryon acoustic oscillations.read more
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Journal ArticleDOI
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the BOSS Final Data Release
Francisco-Shu Kitaura,Sergio Rodríguez-Torres,Chia-Hsun Chuang,Cheng Zhao,Francisco Prada,Francisco Prada,Héctor Gil-Marín,Hong Guo,Hong Guo,Gustavo Yepes,Anatoly Klypin,Anatoly Klypin,Claudia G. Scóccola,Claudia G. Scóccola,Claudia G. Scóccola,Jeremy L. Tinker,Cameron K. McBride,Beth Reid,Beth Reid,Ariel G. Sánchez,Salvador Salazar-Albornoz,Jan Niklas Grieb,Mariana Vargas-Magaña,Antonio J. Cuesta,Mark C. Neyrinck,Florian Beutler,Johan Comparat,Will J. Percival,Ashley J. Ross,Ashley J. Ross +29 more
TL;DR: In this article, the authors reproduce the galaxy clustering catalogue from the SDSS-III Baryon Oscillation Spectroscopic Survey Final Data Release (BOSS DR11&DR12) with high fidelity on all relevant scales in order to allow a robust analysis of baryon acoustic oscillations and redshift space distortions.
Journal ArticleDOI
FastPM: a new scheme for fast simulations of dark matter and haloes
TL;DR: FastPM is introduced, a highly-scalable approximated particle mesh N-body solver, which implements the particle mesh (PM) scheme enforcing correct linear displacement (1LPT) evolution via modified kick and drift factors, employing a 2-dimensional domain decomposing scheme.
Journal ArticleDOI
Cosmological N-body simulations with suppressed variance
Raul E. Angulo,Andrew Pontzen +1 more
TL;DR: In this article, the authors used two simulations which are fixed (the initial Fourier mode amplitudes are fixed to the ensemble average power spectrum) and paired (with initial modes exactly out of phase) to measure the power spectrum, monopole and quadrupole redshift-space correlation functions, halo mass function and reduced bispectrum.
Journal ArticleDOI
DeepSphere: Efficient spherical Convolutional Neural Network with HEALPix sampling for cosmological applications
TL;DR: This work presents a spherical CNN for analysis of full and partial HEALPix maps, which it is shown that the performance of DeepSphere is always superior or equal to both of these baselines and shows how learned filters can be visualized to introspect the neural network.
Journal ArticleDOI
Fast cosmic web simulations with generative adversarial networks
Andres C. Rodriguez,Tomasz Kacprzak,Aurelien Lucchi,Adam Amara,Raphael Sgier,Janis Fluri,Thomas Hofmann,Alexandre Refregier +7 more
TL;DR: In this article, a GAN-generated sample of 2D image snapshots from N-body simulations of size 500 and 100 Mpc is used to train a generative adversarial network (GAN) to generate realistic realizations of the cosmic web.
References
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The Sloan Digital Sky Survey: Technical Summary
TL;DR: The Sloan Digital Sky Survey (SDSS) as mentioned in this paper provides the data to support detailed investigations of the distribution of luminous and non-luminous matter in the Universe: a photometrically and astrometrically calibrated digital imaging survey of pi steradians above about Galactic latitude 30 degrees in five broad optical bands.
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TL;DR: The Sloan Digital Sky Survey (SDSS) as discussed by the authors provides the data to support detailed investigations of the distribution of luminous and non-luminous matter in the universe: a photometrically and astrometrically calibrated digital imaging survey of π sr above about Galactic latitude 30° in five broad optical bands to a depth of g' ~ 23 mag.
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Computer simulation using particles
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TL;DR: In this paper, a simulation program for particle-mesh force calculation is presented, based on a one-dimensional plasma model and a collisionless particle model, which is used to simulate collisionless particle models.
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The Cosmological simulation code GADGET-2
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Detection of the baryon acoustic peak in the large-scale correlation function of SDSS luminous red galaxies
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TL;DR: In this paper, a large-scale correlation function measured from a spectroscopic sample of 46,748 luminous red galaxies from the Sloan Digital Sky Survey is presented, which demonstrates the linear growth of structure by gravitational instability between z ≈ 1000 and the present and confirms a firm prediction of the standard cosmological theory.
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