A new double radio relic in PSZ1 G096.89+24.17 and a radio relic mass-luminosity relation
A new double radio relic in PSZ1 G096.89+24.17 and a radio relic mass-luminosity relation
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DOI：
10.1093/mnras/stu1658
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发表时间：
2014-08
影响因子：
4.8
通讯作者：
F. Gasperin;R. V. Weeren;M. Brüggen;F. Vazza;A. Bonafede;H. Intema
中科院分区：
文献类型：
--
作者：
F. Gasperin;R. V. Weeren;M. Brüggen;F. Vazza;A. Bonafede;H. Intema
无线电遗迹是星系团中的弥散同步加速器源，据信可以追踪大规模冲击波。我们在PSZ1G096.89+24.17(z=0.3)中发现了一个新的双射电遗迹系统，并利用韦斯特博克综合射电望远镜(WSRT)在1.4 GHz进行了全极化射电观测。观测揭示了位于星系团两个完全相反的两侧的两个遗迹的存在，以及中央射电晕的迹象。文物的线性尺寸为$\sim 0.9$和$\sim 1.4$MPC。我们利用射电、X射线和Sunyaev-Zeldovich(SZ)数据对所有已知的双射电遗迹进行了分析。我们发现，双遗迹的射电光度是星系团质量的陡峭函数，其值为$L_R\proto M^{2.83\pm0.39}$。如果我们包括单个无线电遗迹，这种关系保持不变。这种依赖关系对遗迹所在位置的磁场起源有影响。
Radio relics are diffuse synchrotron sources in galaxy clusters that are believed to trace large-scale shock waves. We have discovered a new double radio relic system in PSZ1 G096.89+24.17 (z=0.3) and have carried out a full-polarization radio observation using the Westerbork Synthesis Radio Telescope (WSRT) at 1.4 GHz. The observation revealed the presence of two relics located on the two diametrically opposite sides of the cluster and hints of a central radio halo. The linear sizes of the relics are $\sim 0.9$ and $\sim 1.4$ Mpc. We carried out an analysis of all known double radio relics by using radio, X-ray and Sunyaev-Zeldovich (SZ) data. We find that the radio luminosity of double relics is a steep function of the cluster mass, with $L_R \propto M^{2.83\pm0.39}$. If we include single radio relics, this relation is maintained. This dependence has implications for the origin of magnetic fields at the relic's locations.