Dust Obscured Quasars

Francis, Paul; Webster, Rachel J.; Peterson, Bruce A.; Drinkwater, Michael J.; Masci, Frank J.

Dust Obscured Quasars

Date

1996

Authors

Francis, Paul

Webster, Rachel J.

Peterson, Bruce A.

Drinkwater, Michael J.

Masci, Frank J.

Publisher

Springer Verlag

Abstract

We find that nearly all radio-loud, flat spectrum quasars are obscured by a magnitude or more of dust. The dust is probably located in the quasar or its host galaxy. If radio-quiet QSOs have comparable amounts of dust, ∼ 80% have been missed by all existing surveys. These missing QSOs may explain the X-ray background.