| タイトル | X-ray observations of the southern cluster CA 0340-538 and the Horologium supercluster |
| 著者（英） | Tarenghi, M.; Abramopoulos, F.; Stewart, G. C.; Fabian, A. C.; Ku, W. H.-M.; Nulsen, P. E. J.; Chincarini, G. L. |
| 著者所属（英） | Columbia Univ.|Cambridge Univ. |
| 発行日 | 1983-04-01 |
| 言語 | eng |
| 内容記述 | X-ray observations of the Horologium supercluster are examined. Results show that the optically Coma-like cluster CA 0340-538 has a smooth X-ray structure which also resembles that of Coma. The density structure of its X-ray emitting gas, determined in a model-independent way, is found to be remarkably featureless, being consistent with a nearly isothermal polytrope out to approximately 2 Mpc from the cluster center. The total mass of the gas is determined to exceed 10% of the cluster virial mass and may contribute a substantial fraction of the cluster binding mass. Although CA 0329-527 is found to be an X-ray double cluster, its structure appears to be confused. CA 0325-539 is found to show no substantial X-ray emission. An upper limit of 1.3 x 10 to the 44th erg/s is determined for any diffuse 2-10 keV emission from the Horologium supercluster. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 83A28274 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/404768 |
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