Core collapse in massive scalar-tensor gravity. (arXiv:2005.09728v2 [gr-qc] UPDATED)
<a href="http://arxiv.org/find/gr-qc/1/au:+Rosca_Mead_R/0/1/0/all/0/1">Roxana Rosca-Mead</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Sperhake_U/0/1/0/all/0/1">Ulrich Sperhake</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Moore_C/0/1/0/all/0/1">Christopher J. Moore</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Agathos_M/0/1/0/all/0/1">Michalis Agathos</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Gerosa_D/0/1/0/all/0/1">Davide Gerosa</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Ott_C/0/1/0/all/0/1">Christian D. Ott</a>
This paper provides an extended exploration of the inverse-chirp
gravitational-wave signals from stellar collapse in massive scalar-tensor
gravity reported in [Phys. Rev. Lett. {bf 119}, 201103]. We systematically
explore the parameter space that characterizes the progenitor stars, the
equation of state and the scalar-tensor theory of the core collapse events. We
identify a remarkably simple and straightforward classification scheme of the
resulting collapse events. For any given set of parameters, the collapse leads
to one of three end states, a weakly scalarized neutron star, a strongly
scalarized neutron star or a black hole, possibly formed in multiple stages.
The latter two end states can lead to strong gravitational-wave signals that
may be detectable in present continuous-wave searches with ground-based
detectors. We identify a very sharp boundary in the parameter space that
separates events with strong gravitational-wave emission from those with
negligible radiation.
This paper provides an extended exploration of the inverse-chirp
gravitational-wave signals from stellar collapse in massive scalar-tensor
gravity reported in [Phys. Rev. Lett. {bf 119}, 201103]. We systematically
explore the parameter space that characterizes the progenitor stars, the
equation of state and the scalar-tensor theory of the core collapse events. We
identify a remarkably simple and straightforward classification scheme of the
resulting collapse events. For any given set of parameters, the collapse leads
to one of three end states, a weakly scalarized neutron star, a strongly
scalarized neutron star or a black hole, possibly formed in multiple stages.
The latter two end states can lead to strong gravitational-wave signals that
may be detectable in present continuous-wave searches with ground-based
detectors. We identify a very sharp boundary in the parameter space that
separates events with strong gravitational-wave emission from those with
negligible radiation.
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