Abstract
The synthesis of heavy elements in the Universe presents several challenges. From one side the astrophysical site is still undetermined and on other hand the input from nuclear physics requires the knowledge of properties of exotic nuclei, some of them perhaps accessible in ion beam facilities. Black hole accretion disks have been proposed as possible r-process sites. Analogously to Supernovae these objects emit huge amounts of neutrinos. We discuss the neutrino emission from black hole accretion disks. In particular we show the influence that the black hole strong gravitational field has on changing the electron fraction relevant to the synthesis of elements.
Highlights
Where and how heavy elements are produced in the Universe is one of the fundamental questions in science
In previous works [8, 9], we have studied the influence that gravity has on the emission of neutrinos and the production of heavy elae-mail: lcaballe@umail.iu.edu ements in outflows emerging from black hole accretion disks
The changes introduced in the electron fraction by the gravitaional field are important enough to alter the nucleosynthesis final abundances
Summary
Where and how heavy elements are produced in the Universe is one of the fundamental questions in science. The goal is to be able to emulate the thermodynamical conditions of some stellar site, to evolve a reaction network under those conditions, and to reproduce the observed abundaces. At this point, there is still controversy on the astronomical site(s), and the nuclear properties of many of the nuclei participating in the reactions are uncertain. These studies will shed light on theoretical models, needed to determine the properties of perhaps never accesible nuclei Among all these different ingredients, neutrinos play a crucial role. Via weak interactions they can drive a medium proton-rich or neutron-rich. This together with the thermodynamical evolution of the matter determine what kind of elements are synthetized
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