Kang, Jae Hwan and Ade, P. A. R. and Ahmed, Zeeshan and Amiri, Mandana and Barkats, Denis and Basu Thakur, R. and Bischoff, Colin A. and Bock, J. J. and Boenish, Hans and Bullock, Eric and Buza, Victor and Cheshire, James R. and Connors, Jake and Cornelison, James and Crumrine, Michael and Cukierman, Ari Jozef and Denison, Edward and Dierickx, Marion and Duband, Lionel and Eiben, Miranda and Fatigoni, Sofia and Filippini, Jeff P. and Fliescher, Stefan and Goeckner-Wald, Neil and Goldfinger, David and Grayson, James A. and Grimes, Paul and Hall, Grantland and Halpern, Mark and Harrison, Sam A. and Henderson, Shawn and Hildebrandt, S. R. and Hilton, Gene C. and Hubmayr, Johannes and Hui, H. and Irwin, Kent D. and Karkare, Kirit S. and Karpel, Ethan and Kefeli, S. and Kernasovskiy, Sarah A. and Kovac, John M. and Kuo, Chao-Lin and Lau, King and Leitch, Erik M. and Megerian, K. G. and Minutolo, L. and Moncelsi, L. and Nakato, Yuka and Namikawa, Toshiya and Nguyen, H. T. and O'Brient, R. and Ogburn, IV, R. Walt and Palladino, Steven and Precup, Nathan and Prouve, Thomas and Pryke, Clement and Racine, Benjamin and Reintsema, Carl D. and Richter, Steffen and Schillaci, A. and Schmitt, Benjamin and Schwarz, Robert and Sheehy, Chris D. and Soliman, A. and St Germaine, Tyler and Steinbach, B. and Sudiwala, Rashmi and Teply, Grant and Thompson, Keith L. and Tolan, James E. and Tucker, Carole and Turner, A. D. and Umiltà, Caterina and Vieregg, Abigail G. and Wandui, A. and Weber, A. C. and Wiebe, Don and Willmert, Justin and Wong, Chin Lin and Wu, Wai Ling K. and Yang, Hung-I and Yoon, Ki Won and Young, Edward and Yu, Cyndia and Zeng, Lingzhen and Zhang, C. and Zhang, S. (2020) Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X. Proceedings of SPIE. No.11453. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114532D. ISBN 9781510636934. https://resolver.caltech.edu/CaltechAUTHORS:20201222-083041699
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Abstract
BICEP3 is a 520 mm aperture on-axis refracting telescope at the South Pole, which observes the polarization of the cosmic microwave background (CMB) at 95 GHz to search for the B-mode signal from inflationary gravitational waves. In addition to this main target, we have developed a low-elevation observation strategy to extend coverage of the Southern sky at the South Pole, where BICEP3 can quickly achieve degree-scale E-mode measurements over a large area. An interesting E-mode measurement is probing a potential polarization anomaly around the CMB Cold Spot. During the austral summer seasons of 2018-19 and 2019-20, BICEP3 observed the sky with a flat mirror to redirect the beams to various low elevation ranges. The preliminary data analysis shows degree-scale E-modes measured with high signal-to-noise ratio.
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| Additional Information: | © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). The BICEP/Keck project (including BICEP2, BICEP3 and BICEP Array) have been made possible through a series of grants from the National Science Foundation including 0742818, 0742592, 1044978, 1110087, 1145172, 1145143, 1145248, 1639040, 1638957, 1638978, 1638970, 1726917, 1313010, 1313062, 1313158, 1313287, 0960243, 1836010, 1056465, & 1255358 and by the Keck Foundation. The development of antenna-coupled detector technology was supported by the JPL Research and Technology Development Fund and NASA Grants 06-ARPA206-0040, 10-SAT10-0017, 12-SAT12-0031, 14-SAT14-0009, 16-SAT16-0002, & 18-SAT18-0017. The development and testing of focal planes were supported by the Gordon and Betty Moore Foundation at Caltech. Readout electronics were supported by a Canada Foundation for Innovation grant to UBC. The computations in this paper were run on the Odyssey cluster supported by the FAS Science Division Research Computing Group at Harvard University. The analysis effort at Stanford and SLAC was partially supported by the Department of Energy, Contract DE-AC02-76SF00515. We thank the staff of the U.S. Antarctic Program and in particular the South Pole Station without whose help this research would not have been possible. Tireless administrative support was provided by Kathy Deniston, Sheri Stoll, Irene Coyle, Donna Hernandez, and Dana Volponi, and Julie Shih. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Group: | Astronomy Department | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Subject Keywords: | Cosmic Microwave Background, Inflation, Gravitational Waves, Polarization, BICEP3, Cold Spot | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series Name: | Proceedings of SPIE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Issue or Number: | 11453 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1117/12.2562066 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20201222-083041699 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20201222-083041699 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Official Citation: | Jae Hwan Kang, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, J. J. Bock, H. Boenish, E. Bullock, Victor Buza, J. R. Cheshire IV, J. Connors, J. Cornelison, M. Crumrine, A. Cukierman, E. Denison, M. Dierickx, L. Duband, M. Eiben, S. Fatigoni, J. P. Filippini, S. Fliescher, N. Goeckner-Wald, D. Goldfinger, J. A. Grayson, P. Grimes, G. Hall, M. Halpern, S. A. Harrison, S. Henderson, S. R. Hildebrandt, G. C. Hilton, J. Hubmayr, H. Hui, K. D. Irwin, K. S. Karkare, E. Karpel, S. Kefeli, S. A. Kernasovskiy, J. M. Kovac, C.-L. Kuo, K. Lau, E. M. Leitch, K. G. Megerian, L. Minutolo, L. Moncelsi, Y. Nakato, T. Namikawa, H. T. Nguyen, R. O'brient, R. W. Ogburn IV, S. Palladino, N. Precup, T. Prouve, C. Pryke, B. Racine, C. D. Reintsema, S. Richter, A. Schillaci, B. L. Schmitt, R. Schwarz, C. D. Sheehy, A. Soliman, T. St. Germaine, B. Steinbach, R. V. Sudiwala, G. P. Teply, K. L. Thompson, J. E. Tolan, C. Tucker, A. D. Turner, C. Umiltà, A. G. Vieregg, A. Wandui, A. C. Weber, D. V. Wiebe, J. Willmert, C. L. Wong, W. L. K. Wu, E. Yang, K. W. Yoon, E. Young, C. Yu, L. Zeng, C. Zhang, and S. Zhang "Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 114532D (13 December 2020); https://doi.org/10.1117/12.2562066 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ID Code: | 107250 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited On: | 22 Dec 2020 18:42 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Last Modified: | 16 Nov 2021 19:00 |
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