阿塔卡马宇宙学望远镜(ACT)：波束轮廓与首批SZ星团图
宇宙学与河外天体物理
2010-12-23 v3 天体物理仪器与方法
摘要
阿塔卡马宇宙学望远镜(ACT)目前正在以角分分辨率在148 GHz、218 GHz和277 GHz频率观测宇宙微波背景辐射。本文介绍了ACT的首批结果。数据分析采用了一种最大似然成图方法，该方法使用B样条对大气信号进行建模并去除。该方法已用于制作高精度波束图，并由此确定了实验的窗函数。这些波束信息直接影响所有后续数据分析。我们还利用该方法通过苏尼亚耶夫-泽尔多维奇(SZ)效应对一批星系团进行了成图，并展示了五个先前通过X射线或SZ观测探测到的星系团。我们给出了每个星系团的积分康普顿y参数测量值。特别值得关注的是，我们探测到了A3128中红移z=0.44的成分，而目前未探测到其低红移部分，这有力地证明了较远的那个星系团质量更大，与X射线测量结果一致。这是SZ效应不依赖于红移的质量选择的一个引人注目的例子。
引用
@article{arxiv.0907.0461,
title = {The Atacama Cosmology Telescope (ACT): Beam Profiles and First SZ Cluster Maps},
author = {A. D. Hincks and V. Acquaviva and P. Ade and P. Aguirre and M. Amiri and J. W. Appel and L. F. Barrientos and E. S. Battistelli and J. R. Bond and B. Brown and B. Burger and J. Chervenak and S. Das and M. J. Devlin and S. Dicker and W. B. Doriese and J. Dunkley and R. Dünner and T. Essinger-Hileman and R. P. Fisher and J. W. Fowler and A. Hajian and M. Halpern and M. Hasselfield and C. Hernández-Monteagudo and G. C. Hilton and M. Hilton and R. Hlozek and K. Huffenberger and D. Hughes and J. P. Hughes and L. Infante and K. D. Irwin and R. Jimenez and J. B. Juin and M. Kaul and J. Klein and A. Kosowsky and J. M. Lau and M. Limon and Y. -T. Lin and R. H. Lupton and T. Marriage and D. Marsden and K. Martocci and P. Mauskopf and F. Menanteau and K. Moodley and H. Moseley and C. B. Netterfield and M. D. Niemack and M. R. Nolta and L. A. Page and L. Parker and B. Partridge and H. Quintana and B. Reid and N. Sehgal and J. Sievers and D. N. Spergel and S. T. Staggs and O. Stryzak and D. Swetz and E. Switzer and R. Thornton and H. Trac and C. Tucker and L. Verde and R. Warne and G. Wilson and E. Wollack and Y. Zhao},
journal= {arXiv preprint arXiv:0907.0461},
year = {2010}
}
备注
16 pages, 10 figures. Accepted for publication in ApJS. See Marriage et al. (arXiv:1010.1065) and Menanteau et al. (arXiv:1006.5126) for additional cluster results