Speaker
Alan Tsz Lok Lam
(Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Potsdam)
Description
We study binary neutron stars in the framework of Damour-Esposito-Farese-type (DEF) scalar-tensor theory of gravity with a massive scalar field. In this talk, I will start from the quasiequilibrium sequences of binary neutron stars, paying particular attention to the case where neutron stars are already spontaneously scalarized at distant orbits, i.e., in the high-coupling constant case. In particular, we are able to constrain the scalar mass from gravitational wave observations of binary neutron star mergers by inspecting the dephasing. Then, I will discuss the properties of post-merger remnants of binary neutron star mergers resulted by numerical relativity simulation and provide a distinctive signature in gravitational waves signal.
Authors
Alan Tsz Lok Lam
(Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Potsdam)
Hao-Jui Kuan
(Max Planck Insitute for Gravitational Physics)
Yong Gao
Co-authors
Kenta Kiuchi
Masaru Shibata
(Max Planck Institute for Gravitational Physics at Potsdam)
