On Friday, January 20, 2017 at 8:43:18 AM UTC-8, Martin Brown wrote:

3C303 would appear to be a good FRII candidate for this.


Thanks.

3C303 is a really interesting galaxy / radio lobes. Do you know of a
time sequence for that one? See the radio hot spot to the left of the
image? It's right on a line toward the well established hot spot to the
right, but, it's totally disconnected. It looks like it could be a
separate galaxy or object it is so disconnected. But it also could be a
hot spot that is just beginning to form.

If the latter, I'd expect an evolution in luminosity............of
course it's so far from the core of the galaxy if that's what it is,
that evolution would be over really long time scales (most likely).
Still, interesting to look for faint connections to the central black
hole on that one.

3C84 aka Perseus A NGC 1275 might just about fit that tag. It is
confusing though - originally first thought to be a Seyfert galaxy.

It looks to me like a galaxy where the radio jets have turned off and
the radio is fading away. Does this idea fit?

Thanks,
rt