Conveners
Tuesday - Session 3: First Generation Stars and Galactic Chemical Evolution II
- Grant Mathews (University of Notre Dame)
I will summarize the origin of elements using my Galactic chemical evolution model; only light elements such as hydrogen and helium were produced during the Big Bang. Heavier elements then helium are created inside stars. Alpha elements are mainly produced from core-collapse supernovae, while the majority of iron-peak elements are from Type Ia supernovae. Neutron-capture elements are produced...
We study the photodisintegration process triggered by the nonthermal electromagnetic Hawking radiation from primordial black holes (PBHs)
in the critical collapse model. The presence of a low-mass tail of critical collapse mass function could enhance energetic photon emissions from Hawking
radiation of PBHs. Nuclear photodisintegration rates are calculated with a nonthermal photon spectrum...
Nuclear reactions induced by neutrons play a key role in several astrophysical scenario like primordial nucleosynthesis, s and r process and so on. From an experimental point of view, their reaction cross sections and reaction rates at astrophysically relevant temperatures are usually a hard task to be measured directly. Nevertheless big efforts in the last decades have led to a better...
