ARG00028qe - is this what an old lobe looks like, when viewed end-on?
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by JeanTate
The host seems to be z_sp 0.459 SDSS J122749.44+215519.6, classed by the automated SDSS spectroscopic pipeline as AGN. Radio-wise, it seems to me quite unlike the common doublelobe, corejet, hourglass, or even plume ... it's radio all 'round' the host, and no particularly clear, dominant axis of symmetry (though there's a somewhat x-shaped symmetry).
Are we, perhaps, looking more-or-less end-on onto a large, old lobe?
There's also some unusual greenish fluff around the host, possibly part of the IGM lit-up earlier by previously an active jet? Some sort of cousin to a voorwerpje (i.e. an EELR)?
The image in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is SDSS J122749.44+215519.6
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