Speaker
Description
Type-I X-ray bursts are rapidly brightening phenomena induced by unstable hydrogen/helium burning near the surface of accreting neutron stars (NSs). During X-ray bursts, heavy proton-rich nuclei maximally up to the mass number A~107 are synthesized by a rapid-proton capture (rp) process, but how the nucleosynthesis proceeds depend on many model parameters such as the accretion rate, the composition of accreted matter, nuclear reaction rates, NS structure and temperature. This time, we focus on the internal temperature, which is dominated by the losses of neutrinos inside NSs. Among many neutrino cooling processes, we focus on the nucleonic direct Urca process, which significantly decreases the temperature inside NSs. In this study, we investigate the impacts of the direct Urca process on the final products of X-ray bursts based on our general relativistic evolutionary code.
| Please select a main topic related to your abstract | Explosive Stellar Objects and Nuclear Physics |
|---|
