Unexpected circular radio objects at high Galactic latitude
Unexpected circular radio objects at high Galactic latitude
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DOI:
10.1017/pasa.2020.52
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发表时间:
2020-06
影响因子:
6.3
通讯作者:
R. Norris;H. Intema;A. Kapińska;B. Koribalski;E. Lenc;L. Rudnick;R. Alsaberi;C. Anderson;G. An
中科院分区:
文献类型:
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作者:
R. Norris;H. Intema;A. Kapińska;B. Koribalski;E. Lenc;L. Rudnick;R. Alsaberi;C. Anderson;G. An
Abstract 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.