Hydrogen Epoch of Reionization Array (HERA)

被引：530

作者：

DeBoer, David R. ^{[1
]}

Parsons, Aaron R. ^{[1
]}

Aguirre, James E. ^{[2
]}

Alexander, Paul ^{[3
]}

Ali, Zaki S. ^{[1
]}

Beardsley, Adam P. ^{[4
]}

Bernardi, Gianni ^{[5
,6
]}

Bowman, Judd D. ^{[4
]}

Bradley, Richard F. ^{[7
]}

Carilli, Chris L. ^{[8
]}

Cheng, Carina ^{[1
]}

Acedo, Eloy de Lera ^{[3
]}

Dillon, Joshua S. ^{[1
]}

Ewall-Wice, Aaron ^{[9
]}

Fadana, Gcobisa ^{[6
]}

Fagnoni, Nicolas ^{[3
]}

Fritz, Randall ^{[6
]}

Furlanetto, Steve R. ^{[10
]}

Glendenning, Brian ^{[8
]}

Greig, Bradley ^{[11
]}

Grobbelaar, Jasper ^{[6
]}

Hazelton, Bryna J. ^{[12
,13
]}

Hewitt, Jacqueline N. ^{[9
]}

Hickish, Jack ^{[1
]}

Jacobs, Daniel C. ^{[4
]}

Julius, Austin ^{[6
]}

Kariseb, MacCalvin ^{[6
]}

Kohn, Saul A. ^{[2
]}

Lekalake, Telalo ^{[6
]}

Liu, Adrian ^{[1
]}

Loots, Anita ^{[6
]}

MacMahon, David ^{[1
]}

Malan, Lourence ^{[6
]}

Malgas, Cresshim ^{[6
]}

Maree, Matthys ^{[6
]}

Martinot, Zachary ^{[2
]}

Mathison, Nathan ^{[6
]}

Matsetela, Eunice ^{[6
]}

Mesinger, Andrei ^{[11
]}

Morales, Miguel F. ^{[12
]}

Neben, Abraham R. ^{[9
]}

Patra, Nipanjana ^{[1
]}

Pieterse, Samantha ^{[6
]}

Pober, Jonathan C. ^{[14
]}

Razavi-Ghods, Nima ^{[3
]}

Ringuette, Jon ^{[12
]}

Robnett, James ^{[8
]}

Rosie, Kathryn ^{[6
]}

Sell, Raddwine ^{[6
]}

Smith, Craig ^{[6
]}

机构：

[1] Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA

[2] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[3] Univ Cambridge, Cavendish Astrophys, Cambridge, England

[4] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA

[5] Rhodes Univ, Dept Phys & Elect, POB 94, ZA-6140 Grahamstown, South Africa

[6] SKA SA, Cape Town, South Africa

[7] Natl Radio Astron Observ, Charlottesville, VA USA

[8] Natl Radio Astron Observ, Socorro, NM 87801 USA

[9] MIT, Dept Phys, Cambridge, MA 02139 USA

[10] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA

[11] Scuola Normale Super Pisa, Pisa, Italy

[12] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[13] Univ Washington, eSci Inst, Seattle, WA 98195 USA

[14] Brown Univ, Dept Phys, Providence, RI 02912 USA

[15] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2017年 / 129卷 / 974期

基金：

美国国家科学基金会;

关键词：

dark ages; reionization; first stars; instrumentation: interferometers; techniques: interferometric; telescopes; CM POWER SPECTRUM; LY-ALPHA; REDSHIFT; QUASAR; 21-CM; GALAXIES; SIMULATIONS; CONSTRAINTS; IONIZATION; EVOLUTION;

D O I：

10.1088/1538-3873/129/974/045001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Hydrogen Epoch of Reionization Array (HERA) is a staged experiment to measure 21 cm emission from the primordial intergalactic medium (IGM) throughout cosmic reionization (z = 6-12), and to explore earlier epochs of our Cosmic Dawn (z similar to 30). During these epochs, early stars and black holes heated and ionized the IGM, introducing fluctuations in 21 cm emission. HERA is designed to characterize the evolution of the 21 cm power spectrum to constrain the timing and morphology of reionization, the properties of the first galaxies, the evolution of large-scale structure, and the early sources of heating. The full HERA instrument will be a 350-element interferometer in South Africa consisting of 14 m parabolic dishes observing from 50 to 250 MHz. Currently, 19 dishes have been deployed on site and the next 18 are under construction. HERA has been designated as an SKA Precursor instrument. In this paper, we summarize HERA's scientific context and provide forecasts for its key science results. After reviewing the current state of the art in foreground mitigation, we use the delay-spectrum technique to motivate high-level performance requirements for the HERA instrument. Next, we present the HERA instrument design, along with the subsystem specifications that ensure that HERA meets its performance requirements. Finally, we summarize the schedule and status of the project. We conclude by suggesting that, given the realities of foreground contamination, current-generation 21 cm instruments are approaching their sensitivity limits. HERA is designed to bring both the sensitivity and the precision to deliver its primary science on the basis of proven foreground filtering techniques, while developing new subtraction techniques to unlock new capabilities. The result will be a major step toward realizing the widely recognized scientific potential of 21 cm cosmology.

引用

页数：27

共 139 条

[1] SKALA, a log-periodic array antenna for the SKA-low instrument: design, simulations, tests and system considerations [J].

Acedo, E. de Lera ;

Razavi-Ghods, N. ;

Troop, N. ;

Drought, N. ;

Faulkner, A. J. .

EXPERIMENTAL ASTRONOMY, 2015, 39 (03) :567-594

[2]

Ade P. A. R., 2015, ARXIV150201589

[3]

Aguirre J. E., 2016, APJ UNPUB

[4] DETECTING THE RISE AND FALL OF THE FIRST STARS BY THEIR IMPACT ON COSMIC REIONIZATION [J].

Ahn, Kyungjin ;

Iliev, Ilian T. ;

Shapiro, Paul R. ;

Mellema, Garrelt ;

Koda, Jun ;

Mao, Yi .

ASTROPHYSICAL JOURNAL LETTERS, 2012, 756 (01)

[5] Foregrounds for redshifted 21-cm studies of reionization: Giant meter wave radio telescope 153-MHz observations [J].

Ali, Sk. Saiyad ;

Bharadwaj, Somnath ;

Chengalur, Jayaram N. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 385 (04) :2166-2174

[6] PAPER-64 CONSTRAINTS ON REIONIZATION: THE 21 cm POWER SPECTRUM AT z=8.4 [J].

Ali, Zaki S. ;

Parsons, Aaron R. ;

Zheng, Haoxuan ;

Pober, Jonathan C. ;

Liu, Adrian ;

Aguirre, James E. ;

Bradley, Richard F. ;

Bernardi, Gianni ;

Carilli, Chris L. ;

Cheng, Carina ;

DeBoer, David R. ;

Dexter, Matthew R. ;

Grobbelaar, Jasper ;

Horrell, Jasper ;

Jacobs, Daniel C. ;

Klima, Pat ;

MacMahon, David H. E. ;

Maree, Matthys ;

Moore, David F. ;

Razavi, Nima ;

Stefan, Irina I. ;

Walbrugh, William P. ;

Walker, Andre .

ASTROPHYSICAL JOURNAL, 2015, 809 (01)

[7] Towards a cosmological neutrino mass detection [J].

Allison, R. ;

Caucal, P. ;

Calabrese, E. ;

Dunkley, J. ;

Louis, T. .

PHYSICAL REVIEW D, 2015, 92 (12)

[8] Polarization leakage in epoch of reionization windows - I. Low Frequency Array observations of the 3C196 field [J].

Asad, K. M. B. ;

Koopmans, L. V. E. ;

Jelic, V. ;

Pandey, V. N. ;

Ghosh, A. ;

Abdalla, F. B. ;

Bernardi, G. ;

Brentjens, M. A. ;

de Bruyn, A. G. ;

Bus, S. ;

Ciardi, B. ;

Chapman, E. ;

Daiboo, S. ;

Fernandez, E. R. ;

Harker, G. ;

Iliev, I. T. ;

Jensen, H. ;

Martinez-Rubi, O. ;

Mellema, G. ;

Mevius, M. ;

Offringa, A. R. ;

Patil, A. H. ;

Schaye, J. ;

Thomas, R. M. ;

van der Tol, S. ;

Vedantham, H. K. ;

Yatawatta, S. ;

Zaroubi, S. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 451 (04) :3709-3727

[9] Calibration requirements for detecting the 21 cm epoch of reionization power spectrum and implications for the SKA [J].

Barry, N. ;

Hazelton, B. ;

Sullivan, I. ;

Morales, M. F. ;

Pober, J. C. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 461 (03) :3135-3144

[10] FIRST SEASON MWA EOR POWER SPECTRUM RESULTS AT REDSHIFT 7 [J].

Beardsley, A. P. ;

Hazelton, B. J. ;

Sullivan, I. S. ;

Carroll, P. ;

Barry, N. ;

Rahimi, M. ;

Pindor, B. ;

Trott, C. M. ;

Line, J. ;

Jacobs, Daniel C. ;

Morales, M. F. ;

Pober, J. C. ;

Bernardi, G. ;

Bowman, Judd D. ;

Busch, M. P. ;

Briggs, F. ;

Cappallo, R. J. ;

Corey, B. E. ;

de Oliveira-Costa, A. ;

Dillon, Joshua S. ;

Emrich, D. ;

Ewall-Wice, A. ;

Feng, L. ;

Gaensler, B. M. ;

Goeke, R. ;

Greenhill, L. J. ;

Hewitt, J. N. ;

Hurley-Walker, N. ;

Johnston-Hollitt, M. ;

Kaplan, D. L. ;

Kasper, J. C. ;

Kim, H. S. ;

Kratzenberg, E. ;

Lenc, E. ;

Loeb, A. ;

Lonsdale, C. J. ;

Lynch, M. J. ;

McKinley, B. ;

McWhirter, S. R. ;

Mitchell, D. A. ;

Morgan, E. ;

Neben, A. R. ;

Thyagarajan, Nithyanandan ;

Oberoi, D. ;

Offringa, A. R. ;

Ord, S. M. ;

Paul, S. ;

Prabu, T. ;

Procopio, P. ;

Riding, J. .

ASTROPHYSICAL JOURNAL, 2016, 833 (01)

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