Nuclear Burning in Accretion Flow of Helium-rich matter onto Compact Objects
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916353059848192 |
|---|---|
| author | Shigeyama, Toshikazu Dohi, Akira |
| author_facet | Shigeyama, Toshikazu Dohi, Akira |
| contents | We investigate the impacts of nuclear burning on the spherically symmetric stationary accretion flow of helium-rich matter on to compact objects. We have already shown the existence of the critical accretion rates for the accretion of CO-rich matter above which the flow truncates in the supersonic region due to nuclear burning in the previous paper \citep{2022ApJ...933...29N}. Here, we show that there are also critical accretion rates for helium-rich matter. While we used empirical formulae for the energy generation rates for carbon burning and oxygen burning without solving the nuclear reaction network in our previous work, we solve a simple nuclear reaction network consisting of 13 elements from $^4$He to $^{56}$Ni to investigate influence of the energy generation from not only triple-$α$ reactions but also the subsequent reactions of synthesized elements. We have also qualitatively confirmed the previous results for CO-rich matter accretion using the revised code with the nuclear reaction network and reported some new findings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_05666 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nuclear Burning in Accretion Flow of Helium-rich matter onto Compact Objects Shigeyama, Toshikazu Dohi, Akira Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Nuclear Theory We investigate the impacts of nuclear burning on the spherically symmetric stationary accretion flow of helium-rich matter on to compact objects. We have already shown the existence of the critical accretion rates for the accretion of CO-rich matter above which the flow truncates in the supersonic region due to nuclear burning in the previous paper \citep{2022ApJ...933...29N}. Here, we show that there are also critical accretion rates for helium-rich matter. While we used empirical formulae for the energy generation rates for carbon burning and oxygen burning without solving the nuclear reaction network in our previous work, we solve a simple nuclear reaction network consisting of 13 elements from $^4$He to $^{56}$Ni to investigate influence of the energy generation from not only triple-$α$ reactions but also the subsequent reactions of synthesized elements. We have also qualitatively confirmed the previous results for CO-rich matter accretion using the revised code with the nuclear reaction network and reported some new findings. |
| title | Nuclear Burning in Accretion Flow of Helium-rich matter onto Compact Objects |
| topic | Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Nuclear Theory |
| url | https://arxiv.org/abs/2408.05666 |