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POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations

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arxiv 2202.05892 v2 pith:IR2JG43O submitted 2022-02-11 astro-ph.SR

classification astro-ph.SR
keywords binaryposydonbinariesbinary-evolutioncodedetailedevolutiongrids
verification ladder T0 review T1 audit T2 compute T3 formal
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Most massive stars are members of a binary or a higher-order stellar systems, where the presence of a binary companion can decisively alter their evolution via binary interactions. Interacting binaries are also important astrophysical laboratories for the study of compact objects. Binary population synthesis studies have been used extensively over the last two decades to interpret observations of compact-object binaries and to decipher the physical processes that lead to their formation. Here, we present POSYDON, a novel, binary population synthesis code that incorporates full stellar-structure and binary-evolution modeling, using the MESA code, throughout the whole evolution of the binaries. The use of POSYDON enables the self-consistent treatment of physical processes in stellar and binary evolution, including: realistic mass-transfer calculations and assessment of stability, internal angular-momentum transport and tides, stellar core sizes, mass-transfer rates and orbital periods. This paper describes the detailed methodology and implementation of POSYDON, including the assumed physics of stellar- and binary-evolution, the extensive grids of detailed single- and binary-star models, the post-processing, classification and interpolation methods we developed for use with the grids, and the treatment of evolutionary phases that are not based on pre-calculated grids. The first version of POSYDON targets binaries with massive primary stars (potential progenitors of neutron stars or black holes) at solar metallicity.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Stable mass transfer in massive binaries leading to merging black holes

    astro-ph.SR 2025-12 conditional novelty 7.0 of 10

    Stable mass transfer in massive binaries, modeled with the accreting star's altered structure, produces merging black holes matching LIGO/Virgo masses and spins.

  2. The IACOB project XIX. Revisiting massive-star evolution with empirical TAMS constraints: updated models, overshoot calibration, and the population of blue supergiants

    astro-ph.SR 2026-07 conditional novelty 6.0 of 10

    Massive-star models require mass-dependent core overshoot (α_ov ≈ 0.18–0.45) to match the empirical TAMS, but still fail to explain the velocity dependence of the TAMS and the observed blue supergiant population.

  3. High-mass binary black hole mergers from detailed binary evolution models

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    Fully-conservative BH accretion is disfavored for high-mass BBH mergers; Eddington/GRRMHD accretion with kicks can match part of the LVK high-mass population but still needs another channel.

  4. Nowhere left to hide: revealing realistic gravitational-wave populations in high dimensions and high resolution with PixelPop

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    Modeling all significant correlations with the nonparametric model PixelPop recovers the true black-hole merger rate in a simulated 400-event gravitational-wave catalog, while simpler models introduce bias.

  5. The Long Road to Alignment: Measuring Black Hole Spin Orientation with Expanding Gravitational-Wave Datasets

    astro-ph.HE 2025-05 conditional novelty 6.0 of 10

    Simulated gravitational-wave catalogs show spin-tilt peaks at alignment are hard to confirm even with 1500 events, while integrated tilt fractions are robust.

  6. The first decade of gravitational-wave measurements of black hole spins

    gr-qc 2026-06 unverdicted novelty 1.0 of 10

    A review summarizing formation-channel predictions, waveform effects, and population-level constraints on stellar-mass black hole spins from the first decade of gravitational-wave observations.

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