论文标题
快速风味振荡对中微子驱动的风及其核合成的潜在影响
Potential Impact of Fast Flavor Oscillations on Neutrino-driven Winds and Their Nucleosynthesis
论文作者
论文摘要
由原始恒星（PNS）驱动的强烈中微子发射驱动的风是产生比FE组更重的核的重要部位。由于中微子角分布中的某些特征，所谓的快速风味振荡可能非常靠近PNS表面，从而有效地重置了驱动风的中微子亮度和能量光谱。 使用代表较低和更高质量端的相关祖细胞的两个核心折叠超新星模拟的毫无疑问的中微子发射特性，我们研究了快速风味振荡对中微子驱动的风及其核合成的潜在影响。 我们发现，这样的振荡可以通过〜1.5-1.7的因素增加总质量损失，并导致更大的质子条件。后一种效果可以大大增强64zn和所谓的Light P-Nuclei 74Se，78kr和84sr的产生。讨论了对金属贫困恒星，银河化学演化的含义以及陨石中的同位素异常的影响。
The wind driven by the intense neutrino emission from a protoneutron star (PNS) is an important site for producing nuclei heavier than the Fe group. Because of certain features in the neutrino angular distributions, the so-called fast flavor oscillations may occur very close to the PNS surface, effectively resetting the neutrino luminosities and energy spectra that drive the wind. Using the unoscillated neutrino emission characteristics from two core-collapse supernova simulations representative of relevant progenitors at the lower and higher mass end, we study the potential effects of fast flavor oscillations on neutrino-driven winds and their nucleosynthesis. We find that such oscillations can increase the total mass loss by factors up to ~ 1.5-1.7 and lead to significantly more proton-rich conditions. The latter effect can greatly enhance the production of 64Zn and the so-called light p-nuclei 74Se, 78Kr, and 84Sr. Implications for abundances in metal-poor stars, Galactic chemical evolution in general, and isotopic anomalies in meteorites are discussed.
