cosmic-profiles 1.2.1

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CosmicProfiles is a Cython package for Point Cloud Profiling

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The CosmicProfiles project

This repository provides shape and density profile analysis tools for cosmological simulations (and beyond). Its features include

• overall halo shape determination, i.e. major, intermediate, minor axis vectors and shape quantities such as intermediate-to-major axis ratio or sphericity

• halo shape profile determination

  • iterative shell-based shape profile determination algorithm for high-resolution halos
  • iterative ellipsoid-based shape profile determination algorithm for lower-resolution halos
  • user can choose between reduced shape tensor and non-reduced shape tensor

• works with

  • 'direct' datasets (i.e. index catalogue provided by user) and

  • Gadget-style HDF5 snapshot files

    • additional velocity dispersion tensor eigenaxes determination
    • galaxy density and shape profile determination also works out of the box

• halo density profile estimation using direct binning and kernel-based approaches

  • user can choose between direct binning into spherical shells and
  • direct binning into ellipsoidal shells

• density profile fitting assuming either NFW, Hernquist 1990, Einasto or |alpha_beta_gamma|-profile model

  • concentration-mass relationship of halos easy to calculate

• mock halo generator: ellipsoidal or spherical, compatible with the 4 density profile models

• easy to interface with pynbody to work with halos identified in a cosmological simulation (see example scripts)

• easy to interface with nbodykit to harness large-scale structure capabilities (see example scripts)

• 3D point cloud plotting tools

• efficient caching capabilities to accelerate look-ups

The documentation can be found here <https://cosmic-profiles.readthedocs.io/en/latest/index.html>_.

Contributions are welcome. Please raise an issue or open a PR. Comments/recommendations/complaints can be sent here <mailto:tibor.doeme@gmail.com>_.

.. |PyPI| image:: https://badge.fury.io/py/cosmic_profiles.svg :target: https://badge.fury.io/py/cosmic_profiles .. |Logo| image:: https://cosmic-profiles.readthedocs.io/en/latest/_images/CProfiles.png :target: https://github.com/tibordome/cosmic_profiles :width: 400 .. |Documentation Status| image:: https://readthedocs.org/projects/cosmic-profiles/badge/?version=latest :target: https://cosmic-profiles.readthedocs.io/en/latest/?badge=latest .. |Build status| image:: https://app.travis-ci.com/tibordome/cosmic_profiles.svg?branch=master :target: https://app.travis-ci.com/tibordome/cosmic_profiles .. |alpha_beta_gamma| image:: https://latex.codecogs.com/png.format?\dpi{400}\alpha\beta\gamma :width: 40