Answer :
A Gamma ray detector as it is the type of electromagnetic radiation which is emitted the most when a supernova occurs.
Answer:
Gamma ray
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.