| タイトル | X-Ray Spectroscopy of the Cluster of Galaxies Abell 1795 with XMM-Newton |
| 本文（外部サイト） | http://hdl.handle.net/2060/20030007852 |
| 著者（英） | Peterson, J. R.; Trudolyubov, S. P.; Stewart, G.; Mittaz, J. P. D.; Lumb, D. H.; Kaastra, J. S.; Paerels, F.; Tamura, T.; Fabian, A. C.; Mushotzky, R. F. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2000-10-03 |
| 言語 | eng |
| 内容記述 | The initial results from XMM-Newton observations of the rich cluster of galaxies Abell 1795 are presented. The spatially-resolved X-ray spectra taken by the European Photon Imaging Cameras (EPIC) show a temperature drop at a radius of - 200 kpc from the cluster center, indicating that the ICM is cooling. Both the EPIC and the Reflection Grating Spectrometers (RGS) spectra extracted from the cluster center can be described by an isothermal model with a temperature of approx. 4 keV. The volume emission measure of any cool component (less than 1 keV) is less than a few % of the hot component at the cluster center. A strong O VIII Lyman alpha line was detected with the RGS from the cluster core. The O abundance of the ICM is 0.2-0.5 times the solar value. The O to Fe ratio at the cluster center is 0.5 - 1.5 times the solar ratio. |
| NASA分類 | Astronomy |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/223751 |
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