Unexpected circular radio objects at high Galactic latitude
Publications of the Astronomical Society of Australia, 2021•cambridge.org
We have found a class of circular radio objects in the Evolutionary Map of the Universe Pilot
Survey, using the Australian Square Kilometre Array Pathfinder telescope. The objects
appear in radio images as circular edge-brightened discs, about one arcmin diameter, that
are unlike other objects previously reported in the literature. We explore several possible
mechanisms that might cause these objects, but none seems to be a compelling
explanation.
Survey, using the Australian Square Kilometre Array Pathfinder telescope. The objects
appear in radio images as circular edge-brightened discs, about one arcmin diameter, that
are unlike other objects previously reported in the literature. We explore several possible
mechanisms that might cause these objects, but none seems to be a compelling
explanation.
We have found a class of circular radio objects in the Evolutionary Map of the Universe Pilot Survey, using the Australian Square Kilometre Array Pathfinder telescope. The objects appear in radio images as circular edge-brightened discs, about one arcmin diameter, that are unlike other objects previously reported in the literature. We explore several possible mechanisms that might cause these objects, but none seems to be a compelling explanation.
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