Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session X12: Nuclear Astrophysics II
10:45 AM–12:21 PM,
Tuesday, April 16, 2019
Sheraton Room: Plaza Court 1
Sponsoring Unit: DNP
Chair: Jeff Blackmon, Louisiana State University
Abstract: X12.00008 : Investigating the impact of reaction rate uncertainties on Ti-44 and Ni-56 production in shock driven nucleosynthesis of core-collapse supernovae*
12:09 PM–12:21 PM
View Presentation Abstract
Shiv K Subedi
Shiv K Subedi
Zachary P Meisel
Recent observational advances have enabled high resolution mapping of Ti-44 in core-collapse supernova (CCSN) remnants. Comparisons between observations and 3D models provide stringent constraints on the CCSN mechanism. However, recent work has identified several uncertain nuclear reaction rates that influence Ti-44 and Ni-56 production in model calculations. We use MESA (Modules for Experiments in Stellar Astrophysics) as a tool to investigate the previously identified sensitivities of Ti-44 and Ni-56 production in CCSN to varied reaction rates. MESA is a code for modeling stellar evolution and stellar explosions in one-dimension. We will present our final results of the sensitivity study and our plans to reduce or remove uncertainties from the most significant reaction rates using direct and indirect measurement techniques at the Edwards Accelerator Lab at Ohio University.
*This work was supported in part by the U.S. DOE under Grant No. DE-FG02-88ER40387.
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