Solar radio burst

Definition
Solar radio bursts are

"radio wave emissions from the sun that can interfere with radar, communication, and tracking signals. In severe cases, SRBs can inhibit the successful use of radio communications and disrupt a wide range of systems that are reliant on PNT services on timescales ranging from minutes to hours across wide areas on the dayside of Earth."

Overview
"Solar flares are the primary drivers of SRBs. Intense SRBs interfere with radar systems, satellite communications, and PNT by increasing the noise level at frequencies of operation and overloading the signal, thus making it difficult for ground facilities to operate. Different types of radio bursts affect different frequency ranges."