Theses and Dissertations
This collection includes both ASU Theses and Dissertations, submitted by graduate students, and the Barrett, Honors College theses submitted by undergraduate students.
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- Creators: School of Earth and Space Exploration
We present the isotope yields of two post-explosion, three-dimensional 15 M_sol core-collapse supernova models, 15S and 15A, and compare them to the carbon, nitrogen, silicon, aluminum, sulfur, calcium, titanium, iron, and nickel isotopic compositions of presolar SiC stardust. We find that material from the interior of a core-collapse supernova can form a rare subset of SiC stardust, called SiC D grains, characterized by enrichments of the isotopes 13C and 15N. The innermost material of these core-collapse supernovae is operating in the neutrino-driven regime and undergoes rapid proton capture early in the explosion, providing these isotopes which are not present in such large abundances in other stardust grains of supernova origin.
Space exploration and science fiction have deep historical ties with science fiction literature. From the beginning of the space race, American science fiction stories influenced policy makers, scientists, and the public in their visions of space exploration. However, in the 21st century, the who, what, and why of space exploration are changing. Space exploration is no longer the endeavor of the world's superpowers. Countries from across the global south in Asia and Africa have created space programs and have constructed spacecraft to benefit their country and their international power. The emergence of new countries and the interconnectedness of the modern world has the potential to empower postcolonial countries' perspectives and interests. India is a prime example of a country impoverished by colonialism that has now become one of the world's largest economies and a primary stakeholder in future human space exploration. Moreover, India's rich literary heritage, especially in mythology and science fiction, has the potential to predict and to shape what India brings to the international table. This thesis aims to answer the question: How will/should Indian post-colonial science fiction affect the country’s advancement of human space exploration, without making the same mistakes as the west?