The Four Cosmic Tidal Web Elements from the β-skeleton

@article{SuarezPerez2021TheFC,
  title={The Four Cosmic Tidal Web Elements from the $\beta$-skeleton},
  author={John F. Su'arez-P'erez and Yeimy Camargo and Xiao-Dong Li and Jaime E. Forero-Romero},
  journal={The Astrophysical Journal},
  year={2021},
  volume={922}
}
Precise cosmic web classification of observed galaxies in massive spectroscopic surveys can be either highly uncertain or computationally expensive. As an alternative, we explore a fast Machine Learning-based approach to infer the underlying dark matter tidal cosmic web environment of a galaxy distribution from its β-skeleton graph. We develop and test our methodology using the cosmological magnetohydrodynamic simulation Illustris-TNG at z = 0. We explore three different tree-based machine… 

References

SHOWING 1-10 OF 57 REFERENCES

Tracing the cosmic web

The cosmic web is one of the most striking features of the distribution of galaxies and dark matter on the largest scales in the Universe. It is composed of dense regions packed full of galaxies,

Revealing the Dark Threads of the Cosmic Web

Modern cosmology predicts that matter in our universe today has assembled into a vast network of filamentary structures colloquially termed the “cosmic web.” Because this matter is either

Cosmic web reconstruction through density ridges: method and algorithm

The detection and characterization of filamentary structures in the cosmic web allows cosmologists to constrain parameters that dictates the evolution of the Universe. While many filament estimators

A machine learning approach to galaxy-LSS classification - I. Imprints on halo merger trees

TLDR
A galaxy-LSS machine learning classifier based on galaxy properties sensitive to the environment is presented, revealing environmental information encoded in properties of haloes not normally considered directly dependent on the cosmic environment such as merger history and complexity.

The persistent cosmic web and its filamentary structure I: Theory and implementation

TLDR
The method is interesting as it allows for a robust quantification of the topological properties of a discrete distribution in terms of Betti numbers or Euler characteristics, without having to resort to smoothing or having to define a particular scale.

Evolution of the cosmic web

The cosmic web is the largest scale manifestation of the anisotropic gravitational collapse of matter. It represents the transitional stage between linear and non-linear structures and contains

Galaxy And Mass Assembly (GAMA): the galaxy luminosity function within the cosmic web

We investigate the dependence of the galaxy luminosity function on geometric environment within the Galaxy And Mass Assembly (GAMA) survey. The tidal tensor prescription, based on the Hessian of the

Probabilistic cosmic web classification using fast-generated training data

TLDR
It is demonstrated that the combination of measurements of the local density field magnitude and directionality enables accurate and consistent classification of halo, filament, and void particles in varied environments.

TARDIS. I. A Constrained Reconstruction Approach to Modeling the z ∼ 2.5 Cosmic Web Probed by Lyα Forest Tomography

Recent Lyα forest tomography measurements of the intergalactic medium (IGM) have revealed a wealth of cosmic structures at high redshift (z ∼ 2.5). In this work, we present the Tomographic Absorption

A Dynamical Classification of the Cosmic Web

In this paper, we propose a new dynamical classification of the cosmic web. Each point in space is classified in one of four possible web types: voids, sheets, filaments and knots. The classification
...