Answer:
Gamma ray
Step-by-step explanation:
The most energetic radiation is the Gamma ray. It has largest frequency (>10¹⁹ Hz) smallest wavelength and thus, highest energy. As compared to Gamma ray, infra red, visible and radio wave have low energy. When a heavy mass stars undergoes supernova, it releases a large amount of energy in a small interval of time. Thus, supernovae explosions can be detected by using Gamma rays.