First results of the CROME experiment

Understand

It is expected that a radio signal in the microwave range is produced in the atmosphere due to molecular bremsstrahlung initiated by extensive air showers.

• The CROME (Cosmic-Ray Observation via Microwave Emission) experiment was built to search for this microwave signal.
• Radiation from the atmosphere is monitored in the extended C band (3.4--4.2 GHz) in coincidence with showers detected by the KASCADE-Grande experiment.
• The detector setup consists of several parabolic antennas and fast read-out electronics.