Catalogues of voids as antihaloes in the local Universe

Journal article

A recently proposed algorithm identifies voids in simulations as the regions associated with haloes when the initial overdensity field is negated. We apply this method to the real Universe by running a suite of constrained simulations of the 2M++ volume with initial conditions inferred by the BORG algorithm, along with the corresponding inverted set. Our 101 inverted and uninverted simulations, spanning the BORG posterior, each identify ∼150 000 ‘voids as antihaloes’ with mass exceeding 4.38 × 1011 M⊙ (100 particles) at z = 0 in a full-sky sphere of radius 155 Mpc h−1 around the Milky Way. We calculate the size function, volume filling fraction, ellipticity, central density, specific angular momentum, clustering, and stacked density profile of the voids, and cross-correlate them with those produced by VIDE on the same simulations. We make our antihalo and VIDE catalogues publicly available.

Authors: Desmond, H; Hutt, ML; Devriendt, J; Slyz, A

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Oxford University Press
• Journal: Monthly Notices of the Royal Astronomical Society: Letters
• Volume: 511
• Issue: 1
• Pages: L45-L49
• Publication date: 2022-01-28
• Acceptance date: 2022-01-20
• DOI: 10.1093/mnrasl/slac008
• EISSN: 1745-3933
• Language: English
• Keywords: large-scale structure of Universe; catalogues; galaxies: haloes; software: simulations; FFR; dark matter