is it aDDRG

DDRG Two old lobes seen in picture bottom and top

Posted March 11, 2015 7:52 PM

by ivywong scientist, admin

Can you explain exactly what you define as DDRG ? It's a #bent #doublelobe radio source that is often called a Wide-Angle Tail (WAT).

Posted March 12, 2015 5:55 AM

by Dolorous_Edd in response to ivywong's comment.

I guess DDRG means double - double radio galaxy

Posted March 12, 2015 6:58 AM

by ivywong scientist, admin

Thanks @Dolorous-Edd.

Posted March 13, 2015 3:23 AM

by akapinska scientist

Yes, I see what @sagacoolbond and @DolorusEdd are saying, potentially it could be a restarted radio galaxy with new fresh radio jets from its nicely strong core, and the two bent lobes may be fading away from previous radio activity. But it's hard to tell if that what exactly happening based on only one image. What would be useful here is to have images of this source at the same resolution at different radio frequencies and then look at the radio spectra of each component. I think if it's really restarted we shouldn't be seeing the lobes/hotspots at higher frequencies, and the lobes should have very steep radio spectral index.

Posted March 14, 2015 9:15 AM