"Got the beam" is a colloquial expression that means being caught, noticed, or scrutinized by someone. There are several synonyms for this phrase depending on the context of use. If someone is caught doing something wrong, "caught in the act" or "busted" are common alternatives. If someone is being watched, they can be described as "under surveillance" or "monitored." If someone is being investigated, "under scrutiny" or "in the spotlight" can be used. Other synonyms include "spotted," "detected," and "observed." It's important to choose the right synonym for the situation to convey the intended meaning accurately.