On August 17, 2017, the “Ligo” detector first detected gravitational waves from a fusion of two neutron stars (an event known as GW170817). Such an event had already been predicted before 30 by a number of researchers, including Prof. Zvi Piran of the Hebrew University.

Prior to this discovery, only three events of gravitational waves have been detected so far (as of 2015) and these events resulted from the merging of two black holes.

This event is unique as electromagnetic radiation accompanying an event of gravitational waves was also first detected. About two seconds after the discovery of event GW170817, the "Fermi" space telescope detected an eruption of gamma radiation from an area corresponding to the location of the gravitational wave event.

After the discovery of GW170817 astronomers around the world began searching for electromagnetic radiation at various wavelengths (including ultraviolet radiation, visible light, infrared, X-ray, and radio). A U.S. team was the first to announce the discovery of optical radiation from the event, radiation that was first detected from such an event. The discovery of the optical source also helped to accurately locate the event and indicated that it took place in a galaxy 130 million light-years away from us.

Many teams subsequently detected radiation at wavelengths of ultraviolet, visible and infrared light and continued to make numerous observations multiple days after initial detection in order to gather every possible piece of information about the event. A large international team, consisting of Dr. Assaf Harash and Prof. Zvi Piran, analyzed the information and found that according to forecasts at the event, a large mass of heavy elements such as gold and platinum was formed (in fact, each of us has some neutron star fusion material). Dr. Deaf is also a member of a research team that was looking for radio radiation from the incident. Radio radiation is expected to appear in later times after the neutron stars merge when a substance blown in a high-velocity fusion creates a shock wave in the material surrounding the system. This shock wave creates the radio radiation in question. Indeed, in the early days, no radio radiation was detected. It was only on the 16th day after the merger event that the team first discovered radio radiation.

This is the first time radio radiation from a gravitational wave event has been detected. This radiation is only now becoming clearer and the team continues to make measurements that can answer many questions such as "Did a powerful jet form in the event?" And "What is the speed and energy inherent in the material blown in the blend". There is no doubt that this initial discovery of gravitational waves from the fusion of neutron stars and the initial detection of radiation at all wavelengths from this type of event, symbolize a new era in astronomy, an era of gravitational wave astronomy.