Astronomy Now: The pair pieced together the huge C-shaped structure from much smaller images of cosmic radio waves shown to them as part of the web-based program Radio Galaxy Zoo. via Radio Galaxy Zoo
'The discovery surprised the astronomers running the program, said the lead author of the study Dr Julie Banfield of the ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) at The Australian National University (ANU).
'“They found something that none of us had even thought would be possible,” said Dr Banfield. More than 10,000 volunteers have joined in with Radio Galaxy Zoo, classifying over 1.6 million images from NASA’s Wide-Field Infrared Survey Explorer telescope and the NRAO Very Large Array in New Mexico, USA.
'“The dataset is just too big for any individual or small team to plough through – but we have already reached almost 60 percent completeness” said Dr Banfield.'
"Radio Galaxy Zoo: discovery of a poor cluster through a giant wide-angle tail radio galaxy" by J. K. Banfield, et al, here