A deprojection analysis of Abell 1650 with XMM-Newton
文献类型：期刊论文
| 作者 | Jia SM(贾淑梅) ; Chen Y(陈垚); Jia, SM; Chen, Y; Chen, L
|
| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2006 |
| 卷号 | 6期号:2页码:#REF! |
| 关键词 | galaxies : clusters : individual : Abell 1650 galaxies : cooling flows galaxies : evolution galaxies : intergalactic medium X-rays : galaxies : clusters |
| 通讯作者 | Jia, SM (reprint author), Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China. |
| 英文摘要 | We revisit the XMM-Newton observation of the galaxy cluster Abell 1650 with a deprojection technique. We find that the radial deprojected spectra of Abell 1650 can be marginally fitted by a single-temperature model. In order to study the properties of the central gas, we fit the spectra of the central two regions with a two-temperature model. The fits then become significantly better and the cool gas about 1 similar to 2 keV can be connected with the gas cooling. Fitting the central spectrum (r <= 1') by using a cooling flow model with an isothermal component yields a small mass deposition rate of 10(-7)(+11) M. yr(-1), while the standard cooling flow model can not fit this spectrum satisfactorily except that there exists a cut-off temperature having a level of about 3 keV. From the isothermal model we derive the deprojected electron density profile n(e)(r), and then together with the deprojected temperature profile the total mass and gas mass fraction of cluster are also determined. We compare the properties of Abell 1650 with those of Abell 1835 (a large cooling flow cluster) and some other clusters, to explore the difference in properties between large And small cooling flow cluster, and what causes the difference in the cooling flow of different clusters. It has been shown that Abell 1835 has a steeper potential well and thus a higher electron density and a lower temperature in its center, indicating that the shape of the gravitational potential well in central region determines the cooling flow rates of clusters. We calculate the potential, internal and radiated energies of these two clusters, and find that the gas energies in both clusters are conserved during the collapsing stage. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000237087700006 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226742]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | Jia SM,Chen Y,Jia, SM,et al. A deprojection analysis of Abell 1650 with XMM-Newton[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2006,6(2):#REF!. |
| APA | 贾淑梅,陈垚,Jia, SM,Chen, Y,&Chen, L.(2006).A deprojection analysis of Abell 1650 with XMM-Newton.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,6(2),#REF!. |
| MLA | 贾淑梅,et al."A deprojection analysis of Abell 1650 with XMM-Newton".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 6.2(2006):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。