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arXiv 1702.00795astro-ph.CO
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CLUMP-3D。MACS J1206 .2-0847的三维透镜效应和多探针分析

CLUMP-3D. Three dimensional lensing and multi-probe analysis of MACS J1206.2-0847, a remarkably regular cluster

Mauro Sereno, Stefano Ettori, Massimo Meneghetti, Jack Sayers, Keiichi Umetsu, Julian Merten, I-Non Chiu, Adi Zitrin

摘要:

多波长技术可以探测星系团内重子和暗物质的分布和物理性质。我们提出了一个完整的三维分析相结合的强,弱透镜,X射线表面亮度和温度,和Sunyaev Zel 'dovich效应。该方法被应用于MACS J1206.2-0847,这是一个非常规则的,面对面的,巨大的,M_{200} =(1.1+-0.2)*10^{15}M_Sun/h,z=0.44的星团。测得的浓度为c_{200} =6.3+-1.2,三轴形状与LCDM情景中形成的晕相同。气体已经稳定下来,并遵循引力势的形状,这是通过形状定理证明压力平衡的证据。没有明显的非热压力的证据,平衡是流体静力学的。

英文摘要:

Multi-wavelength techniques can probe the distribution and the physical properties of baryons and dark matter in galaxy clusters from the inner regions out to the peripheries. We present a full three-dimensional analysis combining strong and weak lensing, X-ray surface brightness and temperature, and the Sunyaev-Zel'dovich effect. The method is applied to MACS J1206.2-0847, a remarkably regular, face-on, massive, M_{200}=(1.1+-0.2)*10^{15}M_Sun/h, cluster at z=0.44. The measured concentration, c_{200}=6.3+-1.2, and the triaxial shape are common to halos formed in a LCDM scenario. The gas has settled in and follows the shape of the gravitational potential, which is evidence of pressure equilibrium via the shape theorem. There is no evidence for significant non-thermal pressure and the equilibrium is hydrostatic.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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