Details

Autor(en) / Beteiligte

• Yip, Chun-Ming
• Chu, Ming-Chung
• Leung, Shing-Chi
• Lin, Lap-Ming

Titel

R-process Nucleosynthesis of Subminimal Neutron Star Explosions

Ist Teil von

• The Astrophysical journal, 2023-10, Vol.956 (2), p.115

Ort / Verlag

Philadelphia: The American Astronomical Society

Erscheinungsjahr

2023

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract 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 × 10 50 erg s −1 is emitted while the ejecta is heated to ∼10 9 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.