Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Precision Array for Probing the Epoch of Reionization"'
Autor:
Gregory Paciga, Kris Sigurdson, J. Richard Shaw, Julia Odegova, Kevin Bandura, Tabitha Voytek, Yashwant Gupta, Christopher M. Hirata, Ue-Li Pen, Jayanta Roy, Jeffrey B. Peterson, Joshua G. Albert, Tzu-Ching Chang
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 433:639-647
The GMRT Epoch of Reionization (EoR) experiment is an ongoing effort to measure the power spectrum from neutral hydrogen at high redshift. We have previously reported an upper limit of (70 mK)^2 at wavenumbers of k=0.65 h/Mpc using a basic piecewise-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b3a4a924c2e631589ca997816e49831
https://doi.org/10.1093/mnras/stt753
https://doi.org/10.1093/mnras/stt753
THE HYDROGEN EPOCH OF REIONIZATION ARRAY DISH. I. BEAM PATTERN MEASUREMENTS AND SCIENCE IMPLICATIONS
Autor:
John Shelton, Abraham R. Neben, Carina Cheng, Kavilan Moodley, Nipanjana Patra, Nithyanandan Thyagarajan, Aaron R. Parsons, David DeBoer, Saul A. Kohn, Mike Hedrick, Patrick Schaffner, Max Tegmark, Judd D. Bowman, Patricia J. Klima, Joshua S. Dillon, Richard F. Bradley, Haoxuan Zheng, Phillip Doolittle, Roger Dickenson, Butch Wirt, Hermon Taylor, Dennis Egan, Zaki S. Ali, Aaron Ewall-Wice, Rusty Taylor, James E. Aguirre, Benjamin Saliwanchik, Daniel C. Jacobs, Jacqueline N. Hewitt
Publikováno v:
Neben, Abraham R; Bradley, Richard F; Hewitt, Jacqueline N; DeBoer, David R; Parsons, Aaron R; Aguirre, James E; et al.(2016). THE HYDROGEN EPOCH OF REIONIZATION ARRAY DISH. I. BEAM PATTERN MEASUREMENTS AND SCIENCE IMPLICATIONS. The Astrophysical Journal, 826(2), 199. doi: 10.3847/0004-637X/826/2/199. UC Office of the President: Multicampus Research Programs and Initiatives (MRPI); a funding opportunity through UC Research Initiatives (UCRI). Retrieved from: http://www.escholarship.org/uc/item/6vd2s0pf
The Hydrogen Epoch of Reionization Array (HERA) is a radio interferometer aiming to detect the power spectrum of 21 cm fluctuations from neutral hydrogen from the Epoch of Reionization (EOR). Drawing on lessons from the Murchison Widefield Array (MWA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7af0c6b007da8c7775a7e449515b9a34
http://www.escholarship.org/uc/item/6vd2s0pf
http://www.escholarship.org/uc/item/6vd2s0pf
Autor:
Jonathan C. Pober, Chris Carilli, Joshua S. Dillon, David MacMahon, Daniel C. Jacobs, Adrian Liu, Chuneeta D. Nunhokee, Aaron R. Parsons, Gianni Bernardi, Pat Klima, Richard F. Bradley, Matthew Kolopanis, Matthew R. Dexter, David DeBoer, Zaki S. Ali, Carina Cheng, Saul A. Kohn, James E. Aguirre, David F. Moore, William P. Walbrugh, Andre Walker
Publikováno v:
The Astrophysical Journal. 868:26
The Epoch of Reionization (EoR) is an uncharted era in our Universe's history during which the birth of the first stars and galaxies led to the ionization of neutral hydrogen in the intergalactic medium. There are many experiments investigating the E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db90fffecb1fa5ffe0c228be93717f4d
https://doi.org/10.3847/1538-4357/aae833
https://doi.org/10.3847/1538-4357/aae833
Autor:
Mervyn J. Lynch, Chris Carilli, Griffin Foster, Richard F. Bradley, Erin E. Benoit, Nicole E. Gugliucci, Melvyn Wright, Dan Werthimer, Chaitali R. Parashare, Donald C. Backer, Jason Manley, Aaron R. Parsons, James E. Aguirre, Daniel C. Jacobs, David Herne
Publikováno v:
The Astronomical Journal. 139:1468-1480
We are developing the Precision Array for Probing the Epoch of Reionization (PAPER) to detect 21cm emission from the early Universe, when the first stars and galaxies were forming. We describe the overall experiment strategy and architecture and summ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42472858fddb83f933d38759777f5581
https://doi.org/10.1088/0004-6256/139/4/1468
https://doi.org/10.1088/0004-6256/139/4/1468
Publikováno v:
The Astrophysical Journal. 852:110
Radio interferometers designed to measure the cosmological 21 cm power spectrum require high sensitivity. Several modern low-frequency interferometers feature drift-scan antennas placed on a regular grid to maximize the number of instantaneously cohe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e58448fc9ea4a774246daebe9b70fde0
https://doi.org/10.3847/1538-4357/aaa029
https://doi.org/10.3847/1538-4357/aaa029
We explore the mean and fluctuating redshifted 21 cm signal in numerical simulations of cosmic reionization from the Cosmic Reionization On Computers (CROC) project. We find that the mean signal varies between about $\pm20\rm{mK}$. Most significantly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7063993b5bd832e9a6544f7534058c8
http://arxiv.org/abs/1510.08767
http://arxiv.org/abs/1510.08767
Autor:
Haoxuan Zheng, Daniel C. Jacobs, James E. Aguirre, David F. Moore, Gianni Bernardi, Aaron R. Parsons, Irina I. Stefan, Adrian Liu, Matthew R. Dexter, David DeBoer, Zaki S. Ali, Richard F. Bradley, William P. Walbrugh, Jasper Horrell, David MacMahon, Andre Walker, Matthys Maree, Nima Razavi, Carina Cheng, Chris Carilli, Pat Klima, Jonathan C. Pober, Jasper Grobbelaar
In this paper, we report new limits on 21cm emission from cosmic reionization based on a 135-day observing campaign with a 64-element deployment of the Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) in South Africa. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57e486e8e98fede5e15db7664f3e21e4
http://arxiv.org/abs/1502.06016
http://arxiv.org/abs/1502.06016
Autor:
Aaron R. Parsons, Gianni Bernardi, Matthew R. Dexter, Jonathan C. Pober, Andrei Mesinger, Jasper Horrell, David F. Moore, David DeBoer, Jasper Grobbelaar, Chris Carilli, Daniel C. Jacobs, David MacMahon, Carina Cheng, Saul A. Kohn, Irina I. Stefan, Nima Razavi-Ghods, Steven R. Furlanetto, James E. Aguirre, Patricia J. Klima, Richard F. Bradley, William P. Walbrugh, Haoxuan Zheng, Adrian Liu, Zaki S. Ali, Matthys Maree, Andre Walker, Matthew McQuinn
We present constraints on both the kinetic temperature of the intergalactic medium (IGM) at z=8.4, and on models for heating the IGM at high-redshift with X-ray emission from the first collapsed objects. These constraints are derived using a semi-ana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebcab0317e223e28fdb914c0879b2e33
http://hdl.handle.net/20.500.12386/26329
http://hdl.handle.net/20.500.12386/26329
Publikováno v:
The Astrophysical Journal. 650:529-537
Twenty-one centimeter tomography is emerging as a powerful tool to explore the end of the cosmic dark ages and the reionization epoch, but it will only be as good as our ability to accurately model and remove astrophysical foreground contamination. P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::717daa75e91ae32733333657f74d0916
https://doi.org/10.1086/506597
https://doi.org/10.1086/506597
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 355:1053-1065
Fluctuations in the redshifted 21 centimeter emission from neutral hydrogen probe the epoch of reionization. We examine the observability of this signal and the impact of extragalactic foreground radio sources. We use cosmological simulations to pred
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b73e978ae5e01524fbc630f6ff40851
https://doi.org/10.1111/j.1365-2966.2004.08443.x
https://doi.org/10.1111/j.1365-2966.2004.08443.x