2022/11/25 by Chun-Ming Yip, M. C. Chu, Yip, Chun-Ming +5
Physics and Astronomy · #Nuclear Physics and Applications #Gamma-ray bursts and supernovae #Nuclear physics research studies
paper · pdf · doi:10.48550/arxiv.2211.14023
We show that a minimum-mass neutron star undergoes delayed explosion after mass removal from its surface. We couple the Newtonian hydrodynamics to a nuclear reaction network of ∼4500 isotopes to study the nucleosynthesis and neutrino emission during the explosion. An electron antineutrino burst with a peak luminosity of ∼3×1050 erg s-1 is emitted while the ejecta is heated to ∼109 K. A robust r-process nucleosynthesis is realized in the ejecta. Lanthanides and heavy elements near the second and third r-process peaks are synthesized as end products of nucleosynthesis, suggesting that subminimal neutron star explosions could be an important source of solar chemical elements.