Low energy X-ray emission from five galaxy cluster sources

Details Low energy X-ray emission from five galaxy cluster sources Low energy X-ray emission from five galaxy cluster sources

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247..803r&link_type=abstract

Astrophysical Journal, Part 1, vol. 247, Aug. 1, 1981, p. 803-812. Research supported by the Bell Telephone Laboratories and Mi

Astronomy and Astrophysics

Astronomy

15

Emission Spectra, Galactic Clusters, X Ray Sources, Cosmic Gases, Gas Temperature, Heao 1, Intergalactic Media, Spaceborne Astronomy

Scientific paper

We report the detection of soft (0.2-2.5 keV) X-ray emission from several known cluster X-ray sources using the low energy detectors of the HEAO 1 A-2 experiment. Soft X-ray emission was observed from five clusters - the Centaurus cluster, Abell 2147, SC 1329-314, Abell 2319, and Abell 133. Spectral parameters estimated from the soft X-ray fluxes are inconsistent with those reported at higher energies for the Centaurus cluster, Abell 2147, and SC 1329-314, indicating the presence of more than one spectral component in these clusters. No evidence for more than one component was found for either Abell 2319 or Abell 133. The temperature of Abell 133 is constrained to be less than 2 x 10 to the 7th K, making it the coolest X-ray cluster yet detected.

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