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  1. On the Corotation of Milky Way Satellites: LMC-mass Satellites Induce Apparent Motions in Outer Halo Tracers

    Publication
    Understanding the physical mechanism behind the formation of a corotating thin plane of satellite galaxies, like the one observed around the Milky Way (MW), has been challenging. The …

  2. Accuracy of power spectra in dissipationless cosmological simulations

    Publication
    We exploit a suite of large emph{N}-body simulations (up to N=40963) performed with Abacus, of scale-free models with a range of spectral indices n …

  3. AbacusHOD: A highly efficient extended multi-tracer HOD framework and its application to BOSS and eBOSS data

    Publication
    We introduce the AbacusHOD model and present two applications of AbacusHOD and the AbacusSummit simulations to observations. AbacusHOD is an HOD framework written in Python that is particle …

  4. ABACUSSUMMIT: a massive set of high-accuracy, high-resolution N-body simulations

    Publication
    We present the public data release of the AbacusSummit cosmological N-body simulation suite, produced with the 𝙰𝚋𝚊𝚌𝚞𝚜 N-body code on the Summit supercomputer of the Oak Ridge …

  5. Checkpointing with cp: the POSIX Shared Memory System

    Publication
    We present the checkpointing scheme of Abacus, an N-body simulation code that allocates all persistent state in POSIX shared memory, or ramdisk. Checkpointing becomes as simple as …

  6. A Hybrid Deep Learning Approach to Cosmological Constraints From Galaxy Redshift Surveys

    Publication
    We present a deep machine learning (ML)-based technique for accurately determining σ8 and Ωm from mock 3D galaxy surveys. The mock surveys are built from the AbacusCosmos …

  7. COMPASO: A new halo finder for competitive assignment to spherical overdensities

    Publication
    We describe a new method (textsc{CompaSO}) for identifying groups of particles in cosmological N-body simulations. textsc{CompaSO} builds upon existing spherical overdensity (SO) algorithms by taking …