Improved Constraints on the 21 cm EoR Power Spectrum and the X-Ray Heating of the IGM with HERA Phase I Observations

Autor: Abdurashidova, THCZ, Adams, T, Aguirre, JE, Alexander, P, Ali, ZS, Baartman, R, Balfour, Y, Barkana, R, Beardsley, AP, Bernardi, G, Billings, TS, Bowman, JD, Bradley, RF, Breitman, D, Bull, P, Burba, J, Carey, S, Carilli, CL, Cheng, C, Choudhuri, S, DeBoer, DR, De Lera Acedo, E, Dexter, M, Dillon, JS, Ely, J, Ewall-Wice, A, Fagnoni, N, Fialkov, A, Fritz, R, Furlanetto, Gale-Sides, K, Garsden, H, Glendenning, B, Gorce, A, Gorthi, D, Greig, B, Grobbelaar, J, Halday, Z, Hazelton, BJ, Heimersheim, S, Hewitt, JN, Hickish, J, Jacobs, DC, Julius, A, Kern, NS, Kerrigan, J, Kittiwisit, P, Kohn, SA, Kolopanis, M, Lanman, A, La Plante, P, Lewis, D, Liu, A, Loots, A, Ma, YZ, MacMahon, DHE, Malan, L, Malgas, K, Malgas, C, Maree, M, Marero, B, Martinot, ZE, McBride, L, Mesinger, A, Mirocha, J, Molewa, M, Morales, MF, Mosiane, T, Muñoz, JB, Murray, SG, Nagpal, V, Neben, AR, Nikolic, B, Nunhokee, CD, Nuwegeld, H, Parsons, AR, Pascua, R, Patra, N, Pieterse, S, Qin, Y, Razavi-Ghods, N, Robnett, J, Rosie, K, Santos, MG, Sims, P, Singh, S, Smith, C, Swarts, H, Tan, J, Thyagarajan, N, Wilensky, MJ, Williams, PKG, Van Wyngaarden, P, Zheng, H

We report the most sensitive upper limits to date on the 21 cm epoch of reionization power spectrum using 94 nights of observing with Phase I of the Hydrogen Epoch of Reionization Array (HERA). Using similar analysis techniques as in previously repor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75aecdedff8e1cfd520b2bd0f67a9247
https://www.repository.cam.ac.uk/handle/1810/347499

Understanding the HERA Phase i receiver system with simulations and its impact on the detectability of the EoR delay power spectrum

Autor: Fagnoni, N, De Lera Acedo, E, Deboer, DR, Abdurashidova, Z, Aguirre, JE, Alexander, P, Ali, ZS, Balfour, Y, Beardsley, AP, Bernardi, G, Billings, TS, Bowman, JD, Bradley, RF, Bull, P, Burba, J, Carilli, CL, Cheng, C, Dexter, M, Dillon, JS, Ewall-Wice, A, Fritz, R, Furlanetto, SR, Gale-Sides, K, Glendenning, B, Gorthi, D, Greig, B, Grobbelaar, J, Halday, Z, Hazelton, BJ, Hewitt, JN, Hickish, J, Jacobs, DC, Josaitis, A, Julius, A, Kern, NS, Kerrigan, J, Kim, H, Kittiwisit, P, Kohn, SA, Kolopanis, M, Lanman, A, Plante, PL, Lekalake, T, Liu, A, Macmahon, D, Malan, L, Malgas, C, Maree, M, Martinot, ZE, Matsetela, E, Mena Parra, J, Mesinger, A, Molewa, M, Morales, MF, Mosiane, T, Neben, AR, Nikolic, B, Parsons, AR, Patra, N, Pieterse, S, Pober, JC, Razavi-Ghods, N, Robnett, J, Rosie, K, Sims, P, Smith, C, Syce, A, Thyagarajan, N, Williams, PKG, Zheng, H

Publikováno v: Monthly Notices of the Royal Astronomical Society, vol 500, iss 1

The detection of the Epoch of Reionization (EoR) delay power spectrum using a "foreground avoidance method" highly depends on the instrument chromaticity. The systematic effects induced by the radio-telescope spread the foreground signal in the delay

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0297ce0909920b1afa8a5835ca900cb9

H I21-cm Cosmology and the Bispectrum: Closure Diagnostics in Massively Redundant Interferometric Arrays

Autor: Carilli, CL, Nikolic, B, Thyagarajan, N, Gale-Sides, K, Abdurashidova, Z, Aguirre, JE, Alexander, P, Ali, ZS, Balfour, Y, Beardsley, AP, Bernardi, G, Bowman, JD, Bradley, RF, Burba, J, Cheng, C, DeBoer, DR, Dexter, M, Acedo, EDL, Dillon, JS, Ewall-Wice, A, Fadana, G, Fagnoni, N, Fritz, R, Furlanetto, SR, Ghosh, A, Glendenning, B, Greig, B, Grobbelaar, J, Halday, Z, Hazelton, BJ, Hewitt, JN, Hickish, J, Jacobs, DC, Julius, A, Kariseb, M, Kohn, SA, Kolopanis, M, Lekalake, T, Liu, A, Loots, A, MacMahon, D, Malan, L, Malgas, C, Maree, M, Martinot, Z, Matsetela, E, Mesinger, A, Molewa, M, Morales, MF, Neben, AR, Parsons, AR, Patra, N, Pieterse, S, Plante, PL, Pober, JC, Razavi-Ghods, N, Ringuette, J, Robnett, J, Rosie, K, Sell, R, Sims, P, Smith, C, Syce, A, Williams, PKG, Zheng, H

Publikováno v: Carilli, CL; Nikolic, B; Thyagarajan, N; Gale-Sides, K; Abdurashidova, Z; Aguirre, JE; et al.(2018). HI 21cm Cosmology and the Bi-spectrum: Closure Diagnostics in Massively Redundant Interferometric Arrays. UCLA: Retrieved from: http://www.escholarship.org/uc/item/7bb0f1fp

New massively redundant low frequency arrays allow for a novel investigation of closure relations in interferometry. We employ commissioning data from the Hydrogen Epoch of Reionization Array to investigate closure quantities in this densely packed g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fab1f68600446781b0b3d73d368caaa
https://doi.org/10.1029/2018rs006537

Erratum: PAPER-64 constraints on reionization: The 21 cm power spectrum at z = 8.4 (Astrophysical Journal (2015) 809 (61) DOI: 10.1088/0004-637X/809/1/61)

Autor: Ali, ZS, Parsons, AR, Zheng, H, Pober, JC, Liu, A, Aguirre, JE, Bradley, RF, Bernardi, G, Carilli, CL, Cheng, C, Deboer, DR, Dexter, MR, Grobbelaar, J, Horrell, J, Jacobs, DC, Klima, P, Macmahon, DHE, Maree, M, Moore, DF, Razavi, N, Stefan, II, Walbrugh, WP, Walker, A

Publikováno v: Astrophysical Journal, vol 863, iss 2

In this erratum, we retract the upper limits on the 21 cm power spectrum presented in the published article. The published article reported an upper limit on δ 212(k ) of (22.4 mK)2 at z= 8.4 in the range 0.15 < k < 0.5h Mpc-1. This analysis underes

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https://escholarship.org/uc/item/036231r7

PAPER-64 CONSTRAINTS ON REIONIZATION. II. THE TEMPERATURE OF THE z = 8.4 INTERGALACTIC MEDIUM

Autor: Pober, JC, Ali, ZS, Parsons, AR, McQuinn, M, Aguirre, JE, Bernardi, G, Bradley, RF, Carilli, CL, Cheng, C, Deboer, DR, Dexter, MR, Furlanetto, SR, Grobbelaar, J, Horrell, J, Jacobs, DC, Klima, PJ, Kohn, SA, Liu, A, Macmahon, DHE, Maree, M, Mesinger, A, Moore, DF, Razavi-Ghods, N, Stefan, II, Walbrugh, WP, Walker, A, Zheng, H

Publikováno v: The Astrophysical Journal, vol 809, iss 1
Astrophysical Journal, vol 809, iss 1
Pober, JC; Ali, ZS; Parsons, AR; McQuinn, M; Aguirre, JE; Bernardi, G; et al.(2015). PAPER-64 CONSTRAINTS on REIONIZATION. II. the TEMPERATURE of the z = 8.4 INTERGALACTIC MEDIUM. Astrophysical Journal, 809(1). doi: 10.1088/0004-637X/809/1/62. UCLA: Retrieved from: http://www.escholarship.org/uc/item/17j7d0kx

© 2015. The American Astronomical Society. All rights reserved. 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 firs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0bc581f01fc73e56d391cc4b35fb33dc
https://escholarship.org/uc/item/17j7d0kx