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The minimum neutron star mass in neutrino-driven supernova explosions

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arxiv 2407.08407 v2 pith:PWRSPTJ2 submitted 2024-07-11 astro-ph.HE astro-ph.SRgr-qc

Bernhard Müller , Alexander Heger , Jade Powell This is my paper · ORCID
classification astro-ph.HEastro-ph.SRgr-qc
keywords mathrmneutronstarmassodotsupernovaminimumstellar
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abstract

Supernova theory has struggled to explain the lightest known neutron star candidate with an accurate mass determination, the $1.174\mathrm{M}_\odot$ companion in the eccentric compact binary system J0453+1559. To improve the theoretical lower limit for neutron star birth masses, we perform 3D supernova simulations for five stellar models close to the minimum mass for iron core collapse. We obtain a record-low neutron star mass of $1.192\mathrm{M}_\odot$ and a substantial kick of $\mathord{\sim} 100\,\mathrm{km}\,\mathrm{s}^{-1}$. Given residual uncertainties in stellar evolution, a neutron star origin for the $1.174\mathrm{M}_\odot$ object remains plausible.

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Cited by 7 Pith papers

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

  1. Subsolar-mass binary mergers of strange stars and neutron stars: gravitational waves and ejecta

    astro-ph.HE 2026-07 conditional novelty 7.0 of 10

    Subsolar strange star mergers produce a lower post-merger-to-cutoff GW frequency ratio than neutron star mergers, cleanly separating the two classes across equations of state and mass ratios.

  2. Monsters and neutron stars

    hep-ph 2026-08 conditional novelty 6.0 of 10

    Dimensional estimates suggest that nuclei with mass number above 10^7 and near-maximal isospin could be metastable, decay by neutron evaporation, and possibly form in neutron star mergers.

  3. Relativistic effects of PSR~J1856--0039 double neutron star system in a 2.36-hour compact orbit

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

    PSR J1856–0039 is a compact double neutron star with the lowest known total mass (2.4884 solar masses), and its orbital decay matches general relativity.

  4. Determining the minimal mass of a proto-neutron star with chirally constrained nuclear equations of state

    nucl-th 2024-11 conditional novelty 6.0 of 10

    For chirally constrained nuclear equations of state, the minimal proto-neutron star mass is about 0.62 solar masses with trapped neutrinos (YL=0.4, s=1) and about 0.22 solar masses after deleptonization (s=2).

  5. Parameter Estimation on LIGO-Virgo-KAGRA O4a Binary Merger Triggers with Sub-solar Mass Components

    gr-qc 2026-07 conditional novelty 5.0 of 10

    Bayesian re-analysis of the seven LVK O4a sub-solar-mass triggers finds three that are compatible with a sub-solar-mass component, though none rises to detection significance.

  6. Understanding the Neutron Star Population with the SKAO Telescopes

    astro-ph.HE 2026-07 accept novelty 3.5 of 10

    SKAO AA* and AA4 surveys are projected to discover thousands of ordinary pulsars and ~800–1000 MSPs, enabling population synthesis, mass measurements and tests of gravity and emission physics.

  7. Probing Neutron Star Interiors and the Properties of Cold Ultra-dense Matter with the SKAO

    astro-ph.HE 2026-07 accept novelty 3.5 of 10

    SKAO's sensitivity, surveys and sub-arraying will deliver tighter NS mass, MoI, spin, glitch and precession constraints that, with X-ray and GW data, probe cold ultra-dense matter.

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