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arxiv: 1808.02328 · v2 · pith:ACVD4CJCnew · submitted 2018-08-07 · 🌌 astro-ph.HE · astro-ph.SR

On the minimum mass of neutron stars

Yudai Suwa (YITP , Kyoto Univ. , Kyoto Sangyo Univ.) , Takashi Yoshida (Univ. of Tokyo) , Masaru Shibata (YITP , AEI , Potsdam) , Hideyuki Umeda (Univ. of Tokyo)
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Koh Takahashi (Univ. of Bonn)
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classification 🌌 astro-ph.HE astro-ph.SR
keywords massneutronminimumcoresremnantstarstarsadvanced
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We investigate remnant neutron star masses (in particular, the minimum allowed mass) by performing advanced stellar evolution calculations and neutrino-radiation hydrodynamics simulations for core-collapse supernova explosions. We find that, based on standard astrophysical scenarios, low-mass carbon-oxygen cores can have sufficiently massive iron cores that eventually collapse, explode as supernovae, and give rise to remnant neutron stars that have a minimum mass of 1.17 M$_\odot$ --- compatible with the lowest mass of the neutron star precisely measured in a binary system of PSR J0453+1559.

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