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Title: Bound Debris Expulsion from Neutron Star Merger Remnants
Abstract Many studies have found that neutron star mergers leave a fraction of the stars’ mass in bound orbits surrounding the resulting massive neutron star or black hole. This mass is a site ofr-process nucleosynthesis and can generate a wind that contributes to a kilonova. However, comparatively little is known about the dynamics determining its mass or initial structure. Here we begin to investigate these questions, starting with the origin of the disk mass. Using tracer particle as well as discretized fluid data from numerical simulations, we identify where in the neutron stars the debris came from, the paths it takes in order to escape from the neutron stars’ interiors, and the times and locations at which its orbital properties diverge from those of neighboring fluid elements that end up remaining in the merged neutron star.  more » « less
Award ID(s):
2004311 2227105 2110352
PAR ID:
10515574
Author(s) / Creator(s):
; ; ; ; ; ;
Publisher / Repository:
The Astrophysical Journal
Date Published:
Journal Name:
The Astrophysical Journal
Volume:
958
Issue:
2
ISSN:
0004-637X
Page Range / eLocation ID:
161
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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