a transient radio wave of length ranging from a fraction of a millisecond to 3 seconds, caused by a high-energy astrophysical process that is not yet understood, väga lühiajaline intensiivne raadiokiirgus, mille kestus on millisekundi murdosast kuni kolme sekundini ja mida tekitab seni tundmatu astrofüüsikaline protsess