brightness by spectrum

For each frequency across the EM spectrum, what is the brightest object in the sky? (Outside of solar system, with special note if things outside the solar system outshine the sun.)

Crab nebula, Markarian 501, Scorpius X-1, Puppis A, Vela supernova remnant, Sirius, Eta Carinae, Cassiopeia A, (maybe Cygnus A?), inner galaxy

GRB

I hadn't realized astronomers call the constellation Scorpius, but astrologers Scorpio.