What does this number measure?
Diffuse radio emission reveals energetic particles on a large scale. Approximate extent of the radio halo cited for comparison in the release, not the cluster's diameter. The Chandra source gives about 16.3 million light-years for this comparison halo. Radio-halo detection thresholds differ from conventions for the size of a galaxy cluster or wall.
Compare the stated dimensions
The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.
Source and limitations
The Chandra source gives approximately 16.3 million light-years for this comparison halo. A radio halo's detection thresholds differ from conventions for the size of a cluster or a wall of galaxies.
A generic artistic pattern shared with another entry in the same family; it represents neither a photograph nor an observed map of this structure. The galaxies and filaments are symbolic; only the stated extent follows the length scale factor. The galaxy pattern is not a real radio image and does not describe the halo's measured shape.