Rather a lot of radio sources

Not sure if it's at all significant, but wanted to draw it to someone's attention.

Posted March 20, 2017 8:18 PM

by JeanTate in response to Cardiffian's comment.

Most, possibly all, the radio sources in this image are artifacts, caused by the very bright radio source off-stage to the NE:

enter image description here

And what's the source of this really bright radio emission? An object which has a bazillion names, including 4C +09.74 (after an early radio survey) and SDSS J234636.83+093045.6. It's a QSO, with a redshift of 0.677:

enter image description here

Posted March 22, 2017 12:46 AM

by Cardiffian

Ah, the cosmic equivalent of a driver who won't dip their headlights.

Posted March 22, 2017 8:34 PM

by 42jkb scientist, admin

This would be considered an artefact. This is what happens when a bright radio source is observed. It is hard to make the image.

Posted March 24, 2017 1:25 AM