Bulletin of the American Physical Society
Fall 2023 Joint Meeting of the Texas Section of the APS, Texas Section of the AAPT & Zone 13 of the SPS
Thursday–Saturday, October 12–14, 2023; Angelo State University, San Angelo, Texas
Session E01: Astrophysics I
10:30 AM–11:30 AM,
Friday, October 13, 2023
Angelo State University
Room: VIN P02
Chair: Kenneth Carrell, Angelo State University
Abstract: E01.00001 : Evolution of Neutron Star Binding Energy in Accreting, Spinning-up Neutron Stars
10:30 AM–10:42 AM
Presenter:
Nathan V Moore
(Texas A&M University-Commerce)
Author:
Nathan V Moore
(Texas A&M University-Commerce)
Neutron star binding energy increases due to accreting matter from neighboring astronomical bodies, and decreases due to the star spinning up, increasing its angular velocity. We present a novel set of models that account for both increasing angular velocity and accreting matter to track a neutron star’s evolution. Using a rapidly rotating neutron star code we generate neutron star models for a given fixed baryon mass and angular velocity and couple it to a model of accretion-induced spin-up. We found a sharp decrease in binding energy during the first ~10 million years of certain neutron stars’ lives, which potentially changes the way that certain neutron star observational data could be interpreted.
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