Strengthening nuclear symmetry energy constraints using multiple resonant shattering flares of neutron stars with realistic mass uncertainties
arxiv(2024)
摘要
With current and planned gravitational-wave (GW) observing runs, coincident
multimessenger timing of Resonant Shattering Flares (RSFs) and GWs may soon
allow for neutron star (NS) asteroseismology to be used to constrain the
nuclear symmetry energy, an important property of fundamental nuclear physics
that influences the composition and equation of state of NSs. In this work we
examine the effects of combining multiple RSF detections on these symmetry
energy constraints, and consider how realistic uncertainties in the masses of
the progenitor NSs may weaken them. We show that the detection of subsequent
multimessenger events has the potential to substantially improve constraints
beyond those obtained from the first, and that this improvement is insensitive
to the mass of the NSs which produce the RSFs and its uncertainty. This sets
these asteroseismic constraints apart from bulk NS properties such as radius,
for which the NS mass is highly important, meaning that any multimessenger RSF
and GW events can equally improve our knowledge of fundamental physics.
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