The Atacama Cosmology Telescope: Galactic Dust Structure and the Cosmic PAH Background in Cross-correlation with WISE
Rodrigo Córdova Rosado, Brandon S. Hensley, Susan E. Clark, Adriaan J. Duivenvoorden, Zachary Atkins, Elia Stefano Battistelli, Steve K. Choi, Jo Dunkley, Carlo… 展开作者
Rodrigo Córdova Rosado, Brandon S. Hensley, Susan E. Clark, Adriaan J. Duivenvoorden, Zachary Atkins, Elia Stefano Battistelli, Steve K. Choi, Jo Dunkley, Carlos Hervías-Caimapo, Zack Li, Thibaut Louis, Sigurd Naess, Lyman A. Page, Bruce Partridge, Cristóbal Sifón, Suzanne T. Staggs, Cristian Vargas, Edward J. Wollack
We present a cross-correlation analysis between $1'$ resolution total intensity and polarization observations from the Atacama Cosmology Telescope (ACT) at 150 and 220 GHz and 15$''$ mid-infrared photometry from the Wide-field Infrared Survey Explorer (WISE) over 107 12.5$^\circ\times$12.5$^\circ$ patches of sky. We detect a spatially isotropic signal in the WISE$\times$ACT $TT$ cross power spectrum at 30$σ$ significance that we interpret as the correlation between the cosmic infrared background at ACT frequencies and polycyclic aromatic hydrocarbon (PAH) emission from galaxies in WISE, i.e., the cosmic PAH background. Within the Milky Way, the Galactic dust $TT$ spectra are generally well-described by power laws in $\ell$ over the range 10$^3 < \ell < $10$^4$, but there is evidence both for variability in the power law index and for non-power law behavior in some regions. We measure a positive correlation between WISE total intensity and ACT $E$-mode polarization at 1000$ < \ell \lesssim $6000 at $>$3$σ$ in each of 35 distinct $\sim$100 deg$^2$ regions of the sky, suggesting alignment between Galactic density structures and the local magnetic field persists to sub-parsec physical scales in these regions. The distribution of $TE$ amplitudes in this $\ell$ range across all 107 regions is biased to positive values, while there is no evidence for such a bias in the $TB$ spectra. This work constitutes the highest-$\ell$ measurements of the Galactic dust $TE$ spectrum to date and indicates that cross-correlation with high-resolution mid-infrared measurements of dust emission is a promising tool for constraining the spatial statistics of dust emission at millimeter wavelengths.
Atacama Cosmology Telescope measurements of a large sample of candidates from the Massive and Distant Clusters of WISE Survey: Sunyaev-Zeldovich effect confirmation of MaDCoWS candidates using ACT
Searching For Fossil Evidence of AGN Feedback in WISE-Selected Stripe-82 Galaxies By Measuring the Thermal Sunyaev-Zel'dovich Effect With the Atacama Cosmology Telescope
我们利用热Sunyaev-Zel'dovich（tSZ）效应直接测量了星系周围气体的热能。我们对来自阿塔卡玛宇宙望远镜的微波背景图像进行了叠加分析，其中包括1179个0.5 <= z <= 1.0（“低z”）的大质量静止椭圆星系和3274个1.0 <= z <= 1.5的星系（'高z'），使用来自宽视场红外巡天探测器全天巡天和斯隆数字巡天（SDSS）条纹-82字段内的数据进行选择。这些星系周围的气体预计包含能量从过去的事件的活动星系核（AGN）的反馈，并使用建模减去未检测到的污染物后，我们检测到的tSZ信号的意义为0.9西格玛为我们的低Z星系和1.8西格玛为我们的高Z星系。然后，我们包括数据从高频普朗克波段的一个子集的227个低Z星系和529个高Z星系，并找到低Z和高Z的tSZ检测1.0西格玛和1.5西格玛，分别。这些结果表明，低z星系周围的平均热加热为5.6（+5.9/-5.6）x 10^60 erg，高z星系为7.0（+4.7/-4.4）x 10^60 erg。基于简单的加热模型，这些结果是一致的重力加热没有额外的加热由于AGN反馈。
The Atacama Cosmology Telescope: Extragalactic Point Sources in the Southern Surveys at 150, 220 and 280 GHz observed between 2008-2010
Pontificia Universidad Católica de Chile（智利天主教 Pontificia 大学）；Instituto de Astrofísica de Canarias（加那利群岛天体物理研究所）；Universidad de La Laguna（拉古纳大学）；Sapienza - University of Rome（罗马智慧大学）；University of Cambridge（剑桥大学）；Kavli Institute for Cosmology Cambridge（卡弗里宇宙学剑桥研究所）；University of Arizona（亚利桑那大学）；University of the Witwatersrand（威特沃特斯兰德大学）
The Atacama Cosmology Telescope: stellar mass growth in massive galaxy clusters from DR5 over the past 7 billion years
University of the Witwatersrand（威特沃特斯兰德大学）；National Centre for Nuclear Research（国家核研究中心）；University of KwaZulu-Natal（夸祖鲁-纳塔尔大学）；Rutgers, the State University of New Jersey（新泽西州立罗格斯大学）；Institute of Space Sciences (ICE-CSIC)（空间科学研究所）
A flux-limited sample of dusty star-forming galaxies from the Atacama Cosmology Telescope: physical properties and the case for multiplicity
Stony Brook University（石溪大学）；University of California, Berkeley（加州大学伯克利分校）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）；Johns Hopkins University（约翰斯·霍普金斯大学）；Rochester Institute of Technology（罗切斯特理工学院）；Jet Propulsion Laboratory（喷气推进实验室）；Swarthmore College（斯沃斯莫尔学院）
Atacama Cosmology Telescope: Observations of supermassive black hole binary candidates. Strong sinusoidal variations at 95, 147 and 225 GHz in PKS 2131$-$021 and PKS J0805$-$0111
David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto（多伦多大学）；Specola Vaticana (Vatican Observatory)（梵蒂冈天文台）；Kavli Institute for Astronomy & Astrophysics, Peking University（北京大学）；Department of Astronomy, School of Physics, Peking University（北京大学物理学院天文学系）；Astronomical Observatory, University of Warsaw（华沙大学）；Institute of Theoretical Astrophysics, University of Oslo（奥斯陆大学）；Institute of Astrophysics, Foundation for Research & Technology-Hellas（希腊研究与技术基金会）；Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics, Stanford University（斯坦福大学）；Canadian Institute for Theoretical Astrophysics, University of Toronto（多伦多大学）；Department of Physics & Astronomy, University of Pennsylvania（宾夕法尼亚大学）；Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University（普林斯顿大学）；Department of Astrophysical Sciences, Peyton Hall, Pr（普林斯顿大学）
