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arXiv 1605.09261astro-ph.COastro-ph.IM
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AMiBA:用扩展的13元阵观测星系团的Sunyaev-Zel'dovich效应

AMiBA: Cluster Sunyaev-Zel'dovich Effect Observations with the Expanded 13-Element Array

Kai-Yang Lin, Hiroaki Nishioka, Fu-Cheng Wang, Chih-Wei Locutus Huang, Yu-Wei Liao, Jiun-Huei Proty Wu, Patrick M. Koch, Keiichi Umetsu, Ming-Tang Chen, Shun-Hs… 展开作者

Kai-Yang Lin, Hiroaki Nishioka, Fu-Cheng Wang, Chih-Wei Locutus Huang, Yu-Wei Liao, Jiun-Huei Proty Wu, Patrick M. Koch, Keiichi Umetsu, Ming-Tang Chen, Shun-Hsiang Chan, Shu-Hao Chang, Wen-Hsuan Lucky Chang, Tai-An Cheng, Hoang Ngoc Duy, Szu-Yuan Fu, Chih-Chiang Han, Solomon Ho, Ming-Feng Ho, Paul T. P. Ho, Yau-De Huang, Homin Jiang, Derek Y. Kubo, Chao-Te Li, Yu-Chiung Lin, Guo-Chin Liu, Pierre Martin-Cocher, Sandor M. Molnar, Emmanuel Nunez, Peter Oshiro, Shang-Ping Pai, Philippe Raffin, Anthony Ridenour, Chia-You Shih, Sara Stoebner, Giap-Siong Teo, Jia-Long Johnny Yeh, Joshua Williams, Mark Birkinshaw

摘要:

微波背景各向异性阵列(AMiBA)是一个共面干涉仪阵列,工作波长为3 mm,用于测量星系团的Sunyaev-Zeldovich效应(SZE)。在操作的第一阶段-使用具有0.6米天线的紧凑型7元件阵列(AMiBA-7)-我们在5 \arcmin到23 \arcmin的角度尺度上观察到六个集群。在这里,我们描述的扩展AMiBA的13个元素的阵列与1.2米天线(AMiBA-13),其随后的调试,和我们的集群SZE观测计划。与AMiBA-7相比,最重要的变化是(1)阵列重新配置,基线范围从1.4米到4.8米,覆盖角度范围从2 \arcmin到11.5 \arcmin,(2)13个新的轻质碳纤维增强塑料(CFRP)1.2米反射器,以及(3)额外的反射器和6个新的接收器。从AMiBA-13 SZE观测计划,我们在这里提出的12个集群的一个子集的地图。在亮点中,我们结合了Abell 1689的AMiBA-7和AMiBA-13观测,并假设广义NFW压力分布进行联合拟合。我们的圆柱积分康普顿y值为这个集群是一致的BIMA/OVRA,SZA,和普朗克的结果。我们报告的第一个有针对性的SZE检测对光学选择的星系团RCS J1447+0828,我们证明了AMiBA SZE数据作为总集群质量的代理的能力。最后,我们表明,我们的AMiBA-SZE派生的集群质量是一致的,最近在文献中的透镜质量测量。

英文摘要:

The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) is a co-planar interferometer array operating at a wavelength of 3mm to measure the Sunyaev-Zeldovich effect (SZE) of galaxy clusters. In the first phase of operation -- with a compact 7-element array with 0.6m antennas (AMiBA-7) -- we observed six clusters at angular scales from 5\arcmin to 23\arcmin. Here, we describe the expansion of AMiBA to a 13-element array with 1.2m antennas (AMiBA-13), its subsequent commissioning, and our cluster SZE observing program. The most important changes compared to AMiBA-7 are (1) array re-configuration with baselines ranging from 1.4m to 4.8m covering angular scales from 2\arcmin to 11.5\arcmin, (2) thirteen new lightweight carbon-fiber-reinforced plastic (CFRP) 1.2m reflectors, and (3) additional correlators and six new receivers. From the AMiBA-13 SZE observing program, we present here maps of a subset of twelve clusters. In highlights, we combine AMiBA-7 and AMiBA-13 observations of Abell 1689 and perform a joint fitting assuming a generalized NFW pressure profile. Our cylindrically integrated Compton-y values for this cluster are consistent with the BIMA/OVRA, SZA, and Planck results. We report the first targeted SZE detection towards the optically selected galaxy cluster RCS J1447+0828, and we demonstrate the ability of AMiBA SZE data to serve as a proxy for the total cluster mass. Finally, we show that our AMiBA-SZE derived cluster masses are consistent with recent lensing mass measurements in the literature.

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