A kilonova is a transient astronomical event that occurs in a compact binary system when two neutron stars or a neutron star and a black hole merge into each other. Kilonovae are thought to emit short gamma ray bursts and strong electromagnetic radiation due to the radioactive decay of heavy r-process nuclei that are produced and ejected fairly isotropically during the merger process.
A Kilonova is a very rare astronomical event occurs when two neutron stars or a neutron star and black hole of a binary system merge into each other to form a new neutron star or a new blackhole. They emit electromagnetic radiation and gravitational waves in detectable magnitude.
A kilonova is a transient event at the merging of two neutron stars or one neutron star and black hole of close binary system. As result, a new neutron star or black hole may be formed with emission of gravitational waves and wide-band electromagnetic emission (gamma, X, optics, IR, radio). The event GW170817 closely resembles predictions for a kilonova. GW170817 is the first joint detection by the three-detector network of Advanced LIGO and Virgo. Several groups have identified optical counterpart to GW170817 in the galaxy NGC4993 at adistance of about 40 Mpc.
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