Calibrating CHIME, A New Radio Interferometer to Probe Dark Energy
Laura B. Newburgh, Graeme E. Addison, Mandana Amiri, Kevin Bandura, J. Richard Bond, Liam Connor, Jean-François Cliche, Greg Davis, Meiling Deng, Nolan Denman, … 展开作者
Laura B. Newburgh, Graeme E. Addison, Mandana Amiri, Kevin Bandura, J. Richard Bond, Liam Connor, Jean-François Cliche, Greg Davis, Meiling Deng, Nolan Denman, Matt Dobbs, Mateus Fandino, Heather Fong, Kenneth Gibbs, Adam Gilbert, Elizabeth Griffin, Mark Halpern, David Hanna, Adam D. Hincks, Gary Hinshaw, Carolin Höfer, Peter Klages, Tom Landecker, Kiyoshi Masui, Juan Mena Parra, Ue-Li Pen, Jeff Peterson, Andre Recnik, J. Richard Shaw, Kris Sigurdson, Michael Sitwell, Graeme Smecher, Rick Smegal, Keith Vanderlinde, Don Wiebe
发表信息：
Proc. SPIE 9145, Ground-based and Airborne Telescopes V (2014)
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a transit interferometer currently being built at the Dominion Radio Astrophysical Observatory (DRAO) in Penticton, BC, Canada. We will use CHIME to map neutral hydrogen in the frequency range 400 -- 800\,MHz over half of the sky, producing a measurement of baryon acoustic oscillations (BAO) at redshifts between 0.8 -- 2.5 to probe dark energy. We have deployed a pathfinder version of CHIME that will yield constraints on the BAO power spectrum and provide a test-bed for our calibration scheme. I will discuss the CHIME calibration requirements and describe instrumentation we are developing to meet these requirements.
Beam Maps of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Measured with a Drone
Yale University（耶鲁大学）；McGill University（麦吉尔大学）；Trottier Space Institute, McGill University（麦吉尔大学特罗蒂尔太空研究所）；University of British Columbia（不列颠哥伦比亚大学）；West Virginia University（西弗吉尼亚大学）；Center for Gravitational Waves and Cosmology, West Virginia University（西弗吉尼亚大学引力波与宇宙学中心）；Johns Hopkins University Applied Physics Laboratory（约翰斯·霍普金斯大学应用物理实验室）；Jet Propulsion Laboratory, California Institute of Technology（加州理工学院喷气推进实验室）；Dunlap Institute for Astronomy and Astrophysics, University of Toronto（多伦多大学邓普勒天文学与天体物理学研究所）；David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto（多伦多大学大卫·A·邓普勒天文学与天体物理学系）；University of British Columbia, Okanagan Campus（不列颠哥伦比亚大学奥卡纳根校区）；Dominion Radio Astrophysical Observatory, Herzberg Astronomy and Astrophysics Research Center, National Research Council Canada（加拿大国家研究委员会赫茨伯格天文学与天体物理学研究中心 Dominion 射电天文台）；Center for Astrophysics, Harvard and Smithsonian（哈佛史密森尼天体物理中心）；Brookhaven National Laboratory（布鲁克海文国家实验室）；Perimeter Institute for Theoretical Physics（理论物理前沿研究所）
A spatial filter for mitigating radio interference and its application to CHIME/FRB Outriggers
Massachusetts Institute of Technology（麻省理工学院）；University of Toronto（多伦多大学）；University of Thessaly（色萨利大学）；University of California - Santa Cruz（加州大学圣克鲁兹分校）
Flux Density Calibration of Radio Bursts Detected in the Sidelobes of the Canadian Hydrogen Intensity Mapping Experiment
York University（约克大学）；ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所）；UvA（阿姆斯特丹大学）；MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology（麻省理工学院卡弗里天体物理与空间研究研究所）；Department of Physics, Massachusetts Institute of Technology（麻省理工学院物理学系）；Laboratoire d’Astrophysique de Marseille, Aix-Marseille Univ.（马赛天体物理实验室，艾克斯-马赛大学）
The CHIME/FRB Outriggers: Commissioning the Hat Creek Outrigger and an Updated Calibration Scheme for Mitigating RFI
ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所）；Anton Pannekoek Institute for Astronomy, University of Amsterdam（阿姆斯特丹大学安东·潘内科克天文学研究所）；MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology（麻省理工学院卡弗里天体物理学与空间研究研究所）；Department of Physics, Massachusetts Institute of Technology（麻省理工学院物理学系）
本文介绍 CHIME/FRB Outrigger 中 Hat Creek Outrigger 的调试，采用高斯过程回归校准方案缓解射频干扰，将点源灵敏度提升约 1.69-1.87 倍，并验证了该框架对大型干涉阵列的适用性。
Overview of the Canadian Hydrogen Observatory and Radio Transient Detector (CHORD) Project
West Virginia University（西弗吉尼亚大学）；University of Calgary（卡尔加里大学）；McGill University（麦吉尔大学）；INAF – Istituto di Radioastronomia（意大利国家天体物理研究所射电天文研究所）；Rhodes University（罗德斯大学）；South African Radio Astronomy Observatory（南非射电天文台）；Queen’s University（女王大学）；University of British Columbia, Okanagan Campus（不列颠哥伦比亚大学奥肯那根校区）；Dunlap Institute for Astronomy & Astrophysics, University of Toronto（多伦多大学邓普天文学与天体物理学研究所）；David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto（多伦多大学大卫·A·邓普克天文学与天体物理学系）；Arizona State University（亚利桑那州立大学）；Anton Pannekoek Institute for Astronomy, University of Amsterdam（阿姆斯特丹大学安东·潘内库克天文学研究所）；ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所ASTRON）
