R-process Nucleosynthesis of Subminimal Neutron Star Explosions

被引：2

作者：

Yip, Chun-Ming ^{[1
]}

Chu, Ming-Chung ^{[1
]}

Leung, Shing-Chi ^{[2
]}

Lin, Lap-Ming ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Inst Theoret Phys, Dept Phys, Shatin, Hong Kong, Peoples R China

[2] SUNY Polytech Inst, Dept Math & Phys, 100 Seymour Rd, Utica, NY 13502 USA

来源：

ASTROPHYSICAL JOURNAL | 2023年 / 956卷 / 02期

基金：

美国国家科学基金会;

关键词：

GRAVITATIONAL-WAVES; PROCESS ELEMENTS; MINIMUM MASS; ORIGIN; MERGER; DECOMPRESSION; CAPTURE; NUCLEI; IMPACT; EJECTA;

D O I：

10.3847/1538-4357/acf570

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 4500 isotopes to study the nucleosynthesis and neutrino emission during the explosion. An electron antineutrino burst with a peak luminosity of similar to 3 x 10(50) erg s(-1) is emitted while the ejecta is heated to similar 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.

引用

页数：12

共 50 条

[41] EXPLOSIVE R-PROCESS NUCLEOSYNTHESIS
SCHRAMM, DN
ASTROPHYSICAL JOURNAL, 1973, 185 (01): : 293 - 301
[42] R-PROCESS NUCLEOSYNTHESIS AND COSMOCHRONOLOGY
COWAN, JJ
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1987, 194 : 131 - NUCL
[43] Radiative neutron captures by neutron-rich nuclei and the r-process nucleosynthesis
Goriely, S
PHYSICS LETTERS B, 1998, 436 (1-2) : 10 - 18
[44] r-process Enrichment in the Galactic Halo Characterized by Nucleosynthesis Variation in the Ejecta of Coalescing Neutron Star Binaries
Tsujimoto, Takuji
Nishimura, Nobuya
Kyutoku, Koutarou
ASTROPHYSICAL JOURNAL, 2020, 889 (02):
[45] Cosmochronometer and r-process nucleosynthesis
Otsuki, K.
THIRD EUROPEAN SUMMER SCHOOL ON EXPERIMENTAL NUCLEAR ASTROPHYSICS, 2007, 27 : 133 - 141
[46] The site for r-process nucleosynthesis
Takuji Tsujimoto
Toshikazu Shigeyama
Yuzuru Yoshii
Astrophysics and Space Science, 2002, 281 : 221 - 222
[47] The isovector imaginary neutron potential: a key ingredient for the r-process nucleosynthesis
Goriely, S.
Delaroche, J. -P.
FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS: FINUSTAR 2, 2008, 1012 : 350 - +
[48] The isovector imaginary neutron potential: A key ingredient for the r-process nucleosynthesis
Goriely, S.
Delaroche, J.-P.
PHYSICS LETTERS B, 2007, 653 (2-4) : 178 - 183
[49] THE SENSITIVITY OF r-PROCESS NUCLEOSYNTHESIS TO THE PROPERTIES OF NEUTRON-RICH NUCLEI
Surman, R.
Mumpower, M. R.
Cass, J.
Aprahamian, A.
FISSION AND PROPERTIES OF NEUTRON-RICH NUCLEI, ICFN5, 2013, : 538 - 545
[50] Charge conjugation violation in supernovae and the neutron shortage for r-process nucleosynthesis
Horowitz, CJ
Li, G
INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS, 2000, 549 : 729 - 732

← 1 2 3 4 5 →