QSO J1427+3312

QSO J1427+3312 is a radio-loud quasar that lies at a distance of redshift z=6.12. This object was one of the highest redshift radio-loud quasars discovered. Observation of QSO J1427+3312 suggests that it might be a compact symmetric object that is surrounded by a dense interstellar medium in the host galaxy.

The brightness temperature of QSO J1427+3312 is of order 107 to 108 K.