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Hercules A
Hercules A is a bright astronomical radio source within the vicinity of the constellation Hercules〔(【引用サイトリンク】publisher=NASA )〕 corresponding to the galaxy 3C 348.
==Observation==
During a survey of bright radio sources in the mid-20th century, astronomers found a very bright radio source in the constellation Hercules. The radio source is strongest in the middle range frequency and found that the source emits synchrotron radiation, suggesting the source of radio emission may be gravitational interaction. In 1959, astronomers from the Radio Astronomy Group (later Cavendish Astrophysics Group) detected the radio source using the Cambridge Interferometer of the Cavendish Observatory in Cambridge University in United Kingdom, including it in the Third Cambridge Catalogue of Radio Sources (3C) as 3C 348, the 348th object detected by the survey.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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