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arXiv · 1712.01715

Moment of inertia, quadrupole moment, Love number of neutron star and their relations with strange matter equations of state

D. Bandyopadhyay·S. A. Bhat·P. Char·D. Chatterjee
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Abstract

We investigate the impact of strange matter equations of state involving $\Lambda$ hyperons, Bose-Einstein condensate of $K^-$ mesons and first order hadron-quark phase transition on moment of inertia, quadrupole moment and tidal deformability parameter of slowly rotating neutron stars. All these equations of state are compatible with the 2 M$_{solar}$ constraint. The main findings of this investigation are the universality of the I-Q and I-Love number relations, which are preserved by the EoSs including $\Lambda$ hyperons and antikaon condensates, but broken in presence of a first order hadron-quark phase transition. Furthermore, it is also noted that the quadrupole moment approaches the Kerr value of a black hole for maximum mass neutron stars.

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D. Bandyopadhyay, S. A. Bhat, P. Char, D. Chatterjee. 2017-12-05. Moment of inertia, quadrupole moment, Love number of neutron star and their relations with strange matter equations of state. https://doi.org/10.1140/epja%2Fi2018-12456-y

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