Nuclear reactions in hot astrophysical plasmas with $T>10^{10}$ K

Abstract

The importance of nuclear reactions in low-density astrophysical plasmas with ion temperatures $T\ge 10^{10}$ K has been recognized for more than thirty years. However, the lack of comprehensive data banks of relevant nuclear reactions and the limited computational power have not previously allowed detailed theoretical studies. Recent developments in these areas make it timely to conduct comprehensive studies on the nuclear properties of very hot plasmas formed around compact relativistic objects such as black holes and neutron stars. Such studies are of great interest in the context of scientific programs of future low-energy cosmic $\gamma$-ray spectrometry. In this work, using the publicly available code TALYS, we have built a large nuclear network relevant for temperatures exceeding $10^{10}$ K. We have studied the evolution of the chemical composition and accompanying prompt gamma-ray emission of such high temperature plasmas. We present the results on the abundances of light elements D, T, ${}^3$He, ${}^4$He, ${}^6$Li, ${}^7$Li ${}^9$Be, ${}^{10}$B, ${}^{11}$B, and briefly discuss their implications on the astrophysical abundances of these elements.

arXiv comment39 pages, 26 figures

References in corpus (6)

• Astrophysical Reaction Rates From Statistical Model Calculations
• Improved predictions of nuclear reaction rates with the TALYS reaction code for astrophysical applications
• The Path to Improved Reaction Rates for Astrophysics
• Neutron-induced astrophysical reaction rates for translead nuclei
• Production of A=6,7 Nuclides in the Alpha + Alpha Reaction and Cosmic Ray Nucleosynthesis
• Formation and dynamics of self-sustained neutron haloes in disk accreting sources

Cited by in corpus (4)

• Nucleosynthesis of elements in gamma ray bursts engines
• Diffuse X-Ray and Gamma-Ray Limits on Boson Stars that Interact with Nuclei
• Gamma-ray emission of hot astrophysical plasmas
• Nuclear $\gamma$-ray emission from very hot accretion flows