Merging Strangeon Stars

Understand

The state of supranuclear matter in compact star remains puzzling, and it is argued that pulsars could be strangeon stars.

• What if binary strangeon stars merge? This kind of merger could result in the formation of a hyper-massive strangeon star, accompanied by bursts of gravitational waves and electromagnetic radiation (and even strangeon kilonova explained in the paper).
• The tidal polarizability of binary strangeon stars is different from that of binary neutron stars, because a strangeon star is self-bound on surface by fundamental strong force while a neutron star by the gravity, and their equations of state are different.
• Our calculation shows that the tidal polarizability of merging binary strangeon stars is favored by GW170817.