Holographic Beam Mapping of the CHIME Pathfinder Array

被引：25

作者：

Berger, Philippe ^{[1
,2
]}

Newburgh, Laura B. ^{[3
,4
]}

Amiri, Mandana ^{[5
]}

Bandura, Kevin ^{[6
,7
]}

Cliche, Jean-Francois ^{[6
]}

Connor, Liam ^{[1
,3
,4
]}

Deng, Meiling ^{[5
]}

Denman, Nolan ^{[3
,4
]}

Dobbs, Matt ^{[6
]}

Fandino, Mateus ^{[3
]}

Gilbert, Adam J. ^{[6
]}

Good, Deborah ^{[3
]}

Halpern, Mark ^{[3
]}

Hanna, David ^{[6
]}

Hincks, Adam D. ^{[5
,8
]}

Hinshaw, Gary ^{[5
]}

Hofer, Carolin ^{[5
]}

Johnson, Andre M. ^{[9
]}

Landecker, Tom L. ^{[10
]}

Masui, Kiyoshi W. ^{[5
]}

Parra, Juan Mena ^{[6
]}

Oppermann, Niels ^{[1
,3
]}

Pen, Ue-Li ^{[1
,2
,3
,4
,11
]}

Peterson, Jeffrey B. ^{[12
]}

Recnik, Andre ^{[3
]}

Robishaw, Timothy ^{[10
]}

Shaw, J. Richard ^{[1
,4
]}

Siegel, Seth ^{[6
]}

Sigurdson, Kris ^{[5
]}

Smith, Kendrick ^{[13
]}

Storer, Emilie ^{[6
]}

Tretyakov, Ian ^{[2
,3
]}

Van Gassen, Kwinten ^{[5
]}

Vanderlinde, Keith ^{[3
,7
]}

Wiebe, Donald ^{[5
]}

机构：

[1] Canadian Inst Theoret Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada

[2] Univ Toronto, Dept Phys, 60 St George St, Toronto, ON M5S 3H4, Canada

[3] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[4] Univ Toronto, Dept Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[5] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

[6] McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ, Canada

[7] West Virginia Univ, Lane Dept Comp Sci & Elect Engn, Morgantown, WV 26506 USA

[8] Univ Roma La Sapienza, Dept Phys, Piazzale Aldo Moro 5, I-00185 Rome, Italy

[9] AMJ Consulting, West Kelowna, BC V4T 1H7, Canada

[10] Natl Res Council Canada, Domin Radio Astrophys Observ, Box 248, Penticton, BC V2A 6J9, Canada

[11] Canadian Inst Adv Res, CIFAR Program Gravitat & Cosmol, Toronto, ON M5G 1Z8, Canada

[12] Carnegie Mellon Univ, McWilliams Ctr Cosmol, Dept Phys, 5000 Forbes Ave, Pittsburgh, PA 15213 USA

[13] Perimeter Inst Theoret Phys, 31 Caroline St North, Waterloo, ON N2L 2Y5, Canada

来源：

GROUND-BASED AND AIRBORNE TELESCOPES VI | 2016年 / 9906卷

关键词：

CHIME; Cosmology; SPIE Proceedings; BAO; calibration; radio holography; RADIO TELESCOPES; CALIBRATION; COSMOLOGY;

D O I：

10.1117/12.2233782

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) Pathfinder radio telescope is currently surveying the northern hemisphere between 400 and 800 MHz. By mapping the large scale structure of neutral hydrogen through its redshifted 21 cm line emission between z similar to 0: 8 2: 5 CHIME will contribute to our understanding of Dark Energy. Bright astrophysical foregrounds must be separated from the neutral hydrogen signal, a task which requires precise characterization of the polarized telescope beams. Using the DRAO John A. Galt 26 m telescope, we have developed a holography instrument and technique for mapping the CHIME Pathfinder beams. We report the status of the instrument and initial results of this effort.

引用

页数：16

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