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HEAO A-2 observations of non-Abell Zwicky clusters containing extended radio sources (1981)

Holman, G. D. ; Mckee, J. D.

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Publication Date: 2019-06-28

Description: Burns and Owen's sample of 25 4C radio sources which coincide with Zwicky clusters of galaxies has been searched for X-ray emission using the HEAO 1 A-2 experiment. X-ray emission was detected from five sources at the 3sigma level, two of which exceeded 5sigma. Positions and 90% X-ray error boxes are given for each of the five sources detected. The clusters surveyed are non-Abell clusters which would generally not be expected to be detectable with the A-2 experiment. The search for X-ray emission was prompted by the knowledge of the existence of extended radio sources in the clusters. The relaxed structure of these sources implies the presence of a relatively dense intracluster medium which is expected to produce thermal bremsstrahlung X-ray emission.

Keywords: ASTRONOMY

Type: Astrophysical Journal; vol. 249

Format: text

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