According to Xiong Shaolin, a researcher from the Institute of High Energy Physics of the Chinese Academy of Sciences, "the 'Insight' telescope successfully monitored the sky region where the gravitational wave source was located when the gravitational wave event occurred, and its gamma ray electromagnetic counterpart (referred to as gravitational wave flash) was located in the high energy region (MeV, million electron volts) The radiative properties of, and the related detection results were published in the research paper reporting this historic discovery. "
Gravitational waves were predicted by Einstein after he established the general theory of relativity in 1916. In the extreme astrophysical process, the gravitational field changes rapidly, producing spatiotemporal disturbance and spreading outward, which is vividly called "spatiotemporal ripple". Since LIGO first discovered the gravitational wave event generated by the merger of two black holes on September 14, 2015, four gravitational wave events have been detected, including the announced gravitational wave event of the merger of two neutron stars jointly detected by LIGO and Virgo.
The direct detection of gravitational waves has just been achieved in 2017 The nobel prize in physics 。 Detecting gravitational waves The electromagnetic counterpart plays an irreplaceable and decisive role in the study of gravitational wave events, cosmology and basic physics. Therefore, it is generally believed that the next milestone in the study of gravitational waves is the discovery of electromagnetic radiation generated by gravitational wave events. 
