Mock SZ Maps with Halo-based and Particle-based Baryon Pasting

Overview

This suite is composed of mock tSZ and kSZ maps generated from dark-matter only N-body simulations with baryon pasting algorithms developed in Osato and Nagai (2022). There are 108 realisations for all-sky (halo-based pasting) and flat-sky (particle-based pasting) coverage.

Codes

We provide jupyter notebook to load the map data (load_allsky_HP_map.ipynb and load_flatsky_PP_map.ipynb). healpy and h5py are required for loading healpix and HDF5 maps, respectively.

Data sets

The full data sets are found in Google Drive site.

Data format

All-sky maps with halo-based pasting

The file format is healpix. The file name is allsky_HP_tSZ_nres13_r[real].fits for the tSZ map and allsky_HP_kSZ_nres13_r[real].fits for the kSZ map. [real] denotes the realisation (000-107). The corresponding halo catalogues are described in Takahashi et al. (2017) and data are found in this site. Note that the N-body simulations to generate the HP and PP maps are different.

The specifications of the maps are as follows:

• Nside: 4096
• pixel area: 0.738 arcmin^2

Flat-sky maps with particle-based pasting

The file format is hdf5. The maps are pixellated in regular grids. The file name is flatsky_PP_tSZ_r[real].hdf5 for the tSZ map and flatsky_PP_kSZ_r[real].hdf5 for the kSZ map. [real] denotes the realisation (000-107). We also provide "halo" and "field" separated kSZ maps: flatsky_PP_kSZ_halo_r[real].hdf5 for halo-particles only maps and flatsky_PP_kSZ_field_r[real].hdf5 for field-particles only maps. The tSZ and kSZ maps are defined in regular grids.

The specifications of the maps are as follows:

• number of grids: 4096x4096
• angular size on a side: 5 deg
• resolution: 4.39 arcsec/pixel

Attribution

We kindly ask those who use this suite to cite the paper: Osato and Nagai (2023). The bibtex entry of the paper:

@ARTICLE{2023MNRAS.519.2069O,
       author = {{Osato}, Ken and {Nagai}, Daisuke},
        title = "{Baryon pasting algorithm: halo-based and particle-based pasting methods}",
      journal = {\mnras},
     keywords = {methods: numerical, galaxies: clusters: intracluster medium, large-scale structure of Universe, Astrophysics - Cosmology and Nongalactic Astrophysics},
         year = 2023,
        month = feb,
       volume = {519},
       number = {2},
        pages = {2069-2082},
          doi = {10.1093/mnras/stac3669},
archivePrefix = {arXiv},
       eprint = {2201.02632},
 primaryClass = {astro-ph.CO},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2023MNRAS.519.2069O},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

Copyright

Copyright 2023 Ken Osato and Daisuke Nagai

This software is made available under MIT License. Please see LICENSE file for details.