Version 1
: Received: 30 July 2024 / Approved: 31 July 2024 / Online: 31 July 2024 (14:04:38 CEST)
How to cite:
Lau, R. K. Y. Corrections of the Distribution of Nuclei Due to Neutron Degeneracy and Their Effects in the R-Process in Neutron Stars - Black Hole Mergers. Preprints2024, 2024072539. https://doi.org/10.20944/preprints202407.2539.v1
Lau, R. K. Y. Corrections of the Distribution of Nuclei Due to Neutron Degeneracy and Their Effects in the R-Process in Neutron Stars - Black Hole Mergers. Preprints 2024, 2024072539. https://doi.org/10.20944/preprints202407.2539.v1
Lau, R. K. Y. Corrections of the Distribution of Nuclei Due to Neutron Degeneracy and Their Effects in the R-Process in Neutron Stars - Black Hole Mergers. Preprints2024, 2024072539. https://doi.org/10.20944/preprints202407.2539.v1
APA Style
Lau, R. K. Y. (2024). Corrections of the Distribution of Nuclei Due to Neutron Degeneracy and Their Effects in the R-Process in Neutron Stars - Black Hole Mergers. Preprints. https://doi.org/10.20944/preprints202407.2539.v1
Chicago/Turabian Style
Lau, R. K. Y. 2024 "Corrections of the Distribution of Nuclei Due to Neutron Degeneracy and Their Effects in the R-Process in Neutron Stars - Black Hole Mergers" Preprints. https://doi.org/10.20944/preprints202407.2539.v1
Abstract
The r-process is one of the processes that produce heavy elements in the Universe. One of its possible astrophysical sites is the neutron star - black hole (NS-BH) merger. We first show that the neutrons may be degenerate before and during the r-process in these mergers. Previous studies assumed neutrons were non-degenerate and the related rates were calculated under Maxwell-Boltzmann approximations. Hence, we corrected the related rates with neutron degeneracy and put into the network code and calculated with the trajectories of NS-BH mergers. We show that there are differences in the nuclei distributions and leads to big changes in the heat generation and hence the temperature changes during the r-process. The higher temperatures in the r-process lead to higher luminosity of the light curves of these mergers than the one using non-degenerate rates. However, this has little effect on the final abundances.
Keywords
nuclear astrophysics; nuclear reactions; neutron stars; black holes
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
