Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session D12: Undergraduate Research III
3:30 PM–5:18 PM,
Saturday, April 13, 2019
Sheraton
Room: Plaza Court 1
Chair: Brad Conrad, Society of Physics Students/Sigma Pi Sigma
Abstract: D12.00008 : Theoretical nuclear modeling for Massive Neutron Stars
4:54 PM–5:06 PM
Presenter:
Joseph Moscoso
(Florida International University)
Author:
Joseph Moscoso
(Florida International University)
Collaboration:
Professor Misak Sargsian and High-Energy theory group.
Neutron stars represent the densest visible stellar objects whose dynamics are controlled by the nuclear forces at high densities. In the proposed research, we will consider different models for high density nuclear interactions based on the fundamental theory of quark-gluon interactions. Recently, the dominance of the proton-neutron interaction in the Short-Range Correlations (SRCs) of the nucleons in high density asymmetric nuclear matter predict that protons will populate the high-momentum parts of the stellar interior. Using these models, we will calculate the neutron star parameters, such as mass and the radius. and compare them with current observations. The primary goal of the research is to understand dynamics which are responsible for recently observed anomalously massive neutrons stars exceeding two solar masses. The nuclear equation of state describes dense nuclear matter and its correlation with the critical mass of the object and must be tweaked to incorporate relevant nuclear effects. Identifying the most relevant nuclear force model that describes the current astrophysical observations will allow us to make new predictions related to the neutron star radiation and mergers. The latter is being considered as the main source of gravitational waves.
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