Zobrazeno 51 - 60
of 318
pro vyhledávání: '"J, Hazelton"'
Calibration precision is currently a limiting systematic in 21 cm cosmology experiments. While there are innumerable calibration approaches, most can be categorized as either `sky-based,' relying on an extremely accurate model of astronomical foregro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8ea0101f5f2a1755d88efb418ee8d72
Autor:
Juan Mena Parra, Piyanat Kittiwisit, Kingsley Gale-Sides, Joshua Kerrigan, Honggeun Kim, Adrian Liu, Phil Bull, Nipanjana Patra, Ziyaad Halday, Matthys Maree, James E. Aguirre, Bryna J. Hazelton, Jacqueline N. Hewitt, Zara Abdurashidova, Saul A. Kohn, Judd D. Bowman, Matt Dexter, K. Gale-Sides, Samantha Pieterse, Paul La Plante, Mathakane Molewa, James Kent, Nithyanandan Thyagarajan, Eunice Matsetela, Nicolas Fagnoni, Adam P. Beardsley, Alec Josaitis, Kathryn Rosie, David MacMahon, Jonathan C. Pober, Andrei Mesinger, Jasper Grobbelaar, Tashalee S. Billings, Zachary E. Martinot, Tshegofalang Mosiane, Abraham R. Neben, Austin Julius, Randall Fritz, Siyanda Matika, Brian Glendenning, Carina Cheng, Peter Sims, Paul Alexander, Daniel C. Jacobs, Steve R. Furlanetto, Gianni Bernardi, Bradley Greig, Lourence Malan, Nima Razavi-Ghods, Cresshim Malgas, Yanga Balfour, Nicholas S. Kern, Telalo Lekalake, David DeBoer, Aaron R. Parsons, Richard F. Bradley, Matthew Kolopanis, Deepthi Gorthi, Peter K. G. Williams, James Robnett, Joshua S. Dillon, Chris Carilli, Eloy de Lera Acedo, Miguel F. Morales, Zaki S. Ali, Bojan Nikolic, Aaron Ewall-Wice, Jack Hickish, Jacob Burba, Angelo Syce, Haoxuan Zheng, Adam Lanman
We analyze data from the Hydrogen Epoch of Reionization Array. This is the third in a series of papers on the closure phase delay-spectrum technique designed to detect the HI 21cm emission from cosmic reionization. We present the details of the data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dfd6fdc11e7a022fea81a961efc1461
http://hdl.handle.net/20.500.12386/31039
http://hdl.handle.net/20.500.12386/31039
Autor:
Nipanjana Patra, Ziyaad Halday, Adrian Liu, Matt Dexter, Joshua Kerrigan, Judd D. Bowman, Samantha Pieterse, Chris Carilli, David DeBoer, Eloy de Lera Acedo, Peter K. G. Williams, Zara Abdurashidova, Haoxuan Zheng, Piyanat Kittiwisit, Nithyanandan Thyagarajan, Kathryn Rosie, Austin Julius, Adam P. Beardsley, Philip Bull, David MacMahon, Adam Lanman, Jack Hickish, Gianni Bernardi, James Robnett, Angelo Syce, Jacob Burba, Bryna J. Hazelton, Deepthi Gorthi, Joshua S. Dillon, Richard F. Bradley, Matthew Kolopanis, Brian Glendenning, Matthys Maree, Paul Alexander, Carina Cheng, Miguel F. Morales, Mathakane Molewa, Zaki S. Ali, Bradley Greig, Craig Smith, Aaron Ewall-Wice, Saul A. Kohn, Telalo Lekalake, Nima Razavi-Ghods, Tshegofalang Mosiane, Jon Ringuette, Steve R. Furlanetto, Lourence Malan, Jacqueline N. Hewitt, Aaron R. Parsons, Jonathan C. Pober, Andrei Mesinger, Jasper Grobbelaar, Nicholas S. Kern, Zachary E. Martinot, Paul La Plante, Steven G. Murray, Daniel C. Jacobs, Cresshim Malgas, Abraham R. Neben, Nicolas Fagnoni, Randall Fritz, Yanga Balfour, Eunice Matsetela, Peter Sims, James E. Aguirre
We present a study of internal reflection and cross-coupling systematics in Phase I of the Hydrogen Epoch of Reionization Array (HERA). In a companion paper, we outlined the mathematical formalism for such systematics and presented algorithms for mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61749a2a1dd92abc648bdad0f6d4f13c
http://hdl.handle.net/20.500.12386/31038
http://hdl.handle.net/20.500.12386/31038
Autor:
Nithyanandan Thyagarajan, Adam Lanman, Kathryn Rosie, Angelo Syce, Gianni Bernardi, Deepthi Gorthi, Joshua S. Dillon, Peter Sims, Judd D. Bowman, Brian Glendenning, Carina Cheng, Samantha Pieterse, Craig Smith, Nicholas S. Kern, Eunice Matsetela, Joshua Kerrigan, Miguel F. Morales, Piyanat Kittiwisit, Mathakane Molewa, Zaki S. Ali, Paul Alexander, Tshegofalang Mosiane, Aaron Ewall-Wice, Daniel C. Jacobs, Jack Hickish, Haoxuan Zheng, David MacMahon, Telalo Lekalake, Matt Dexter, Cresshim Malgas, Nicolas Fagnoni, Jacob Burba, Yanga Balfour, Adam P. Beardsley, Bradley Greig, Abraham R. Neben, Steve R. Furlanetto, Matthys Maree, Julia Estrada, David DeBoer, Randall Fritz, James E. Aguirre, Nipanjana Patra, Peter K. G. Williams, Nima Razavi-Ghods, Ziyaad Halday, Richard F. Bradley, Matthew Kolopanis, Paul La Plante, Aaron R. Parsons, Lourence Malan, Adrian Liu, Zara Abdurashidova, Austin Julius, Eloy de Lera Acedo, Jon Ringuette, James Robnett, Jonathan C. Pober, Andrei Mesinger, Jasper Grobbelaar, Saul A. Kohn, Chris Carilli, Zachary E. Martinot, Bryna J. Hazelton
Publikováno v:
Monthly Notices of the Royal Astronomical Society, vol 488, iss 2
Radio Frequency Interference (RFI) is an ever-present limiting factor among radio telescopes even in the most remote observing locations. When looking to retain the maximum amount of sensitivity and reduce contamination for Epoch of Reionization stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec30117ad2a2c6d07d8af5bb313491f7
https://escholarship.org/uc/item/1d4522q1
https://escholarship.org/uc/item/1d4522q1
Autor:
Aaron R. Parsons, Adam P. Beardsley, Cherie Day, Haoxuan Zheng, Joshua S. Dillon, Gcobisa Fadana, Bradley Greig, Jacqueline N. Hewitt, Craig Smith, Daniel C. Jacobs, Anna Lebedeva, Richard F. Bradley, Cresshim Malgas, Brian Glendenning, Carina Cheng, Peter K. G. Williams, Jonathan C. Pober, Andrei Mesinger, Abraham R. Neben, Nima Razavi-Ghods, Randall Fritz, Nipanjana Patra, Jasper Grobbelaar, Paul Alexander, Nithyanandan Thyagarajan, David DeBoer, Gilbert Hsyu, Steve R. Furlanetto, Kathryn Rosie, Max Tegmark, Nicolas Fagnoni, Lourence Malan, Angelo Syce, Zachary E. Martinot, David MacMahon, Jon Ringuette, Adrian Liu, Saul A. Kohn, James Robnett, Chris Carilli, Eloy de Lera Acedo, Nathan Mathison, Austin Julius, Judd D. Bowman, Samantha Pieterse, Anita Loots, Tsz Kuk Leung, Raddwine Sell, Eunice Matsetela, Miguel F. Morales, Bryna J. Hazelton, Zaki S. Ali, MacCalvin Kariseb, Aaron Ewall-Wice, James E. Aguirre, Matthys Maree, Telalo Lekalake
Publikováno v:
Experimental Astronomy, vol 45, iss 2
Patra, N; Parsons, AR; DeBoer, DR; Thyagarajan, N; Ewall-Wice, A; Hsyu, G; et al.(2018). The hydrogen epoch of reionization array dish III: measuring chromaticity of prototype element with reflectometry. Experimental Astronomy, 45(2), 177-199. doi: 10.1007/s10686-017-9563-0. UCLA: Retrieved from: http://www.escholarship.org/uc/item/8gg9s5c4
Springer Netherlands
Patra, N; Parsons, AR; DeBoer, DR; Thyagarajan, N; Ewall-Wice, A; Hsyu, G; et al.(2018). The hydrogen epoch of reionization array dish III: measuring chromaticity of prototype element with reflectometry. Experimental Astronomy, 45(2), 177-199. doi: 10.1007/s10686-017-9563-0. UCLA: Retrieved from: http://www.escholarship.org/uc/item/8gg9s5c4
Springer Netherlands
The experimental efforts to detect the redshifted 21 cm signal from the Epoch of Reionization (EoR) are limited predominantly by the chromatic instrumental systematic effect. The delay spectrum methodology for 21 cm power spectrum measurements brough
Autor:
Andrew J. Hazelton
Publikováno v:
Labor. 16:160-162
Autor:
Andrew J. Hazelton
Publikováno v:
Labor. 15:123-125
Akademický článek
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Autor:
Andrew J. Hazelton
Publikováno v:
Journal of Policy History. 29:431-461
Autor:
Andrew J. Hazelton
Publikováno v:
The International Trade Journal. 32:491-493
The 2016 presidential election thrust border walls to the center of American immigration policy. Despite the high social and economic costs of physical border barriers, to say nothing of their futi...