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First Limits on the 21 cm Power Spectrum during the Epoch of X-ray heating

Ewall-Wice, Aaron; Dillon, Joshua; Hewitt, J. N; Loeb, A; Mesinger, A; Neben, A. R; Offringa, Andre; Tegmark, M; Barry, N; Beardsley, A. P; Bernardi, G; Bowman, Judd D; Briggs, F; Cappallo, R. J; Carroll, P; Corey, B. E; Oliveira-Costa, A. de; Emrich, D; Feng, L; Gaensler, B. M; Goeke, R; Greenhill, L. J; Hazelton, B. J; Hurley-Walker, Natasha; Johnston-Hollitt, M; Jacobs, Daniel C; Kaplan, D. L; Kasper, J. C; Kim, H. S; Kratzenberg, E; Lenc, E; Line, J.; Lonsdale, C. J; Lynch, M. J; McKinley, B; McWhirter, S. R; Mitchell, D. A; Morales, M. F; Morgan, E; Thyagarajan, Nithyanandan; Oberoi, D; Ord, S. M; Paul, S; Pindor, B; Pober, J. C; Prabu, T.; Procopio, P; Riding, J; Rogers, A. E. E; Roshi, A.; Shankar, N. Udaya; Sethi, Shiv K; Srivani, K. S; Subrahmanyan, R; Sullivan, I. S; Tingay, S. J; Trott, C. M; Waterson, M; Wayth, R. B; Webster, R. L; Whitney, A. R; Williams, A.; Williams, C. L; Wu, C; Wyithe, J. S. B

Description

We present first results from radio observations with the Murchison Widefield Array seeking to constrain the power spectrum of 21 cm brightness temperature fluctuations between the redshifts of 11.6 and 17.9 (113 and 75 MHz). Three hours of observations were conducted over two nights with significantly different levels of ionospheric activity. We use these data to assess the impact of systematic errors at low frequency, including the ionosphere and radio-frequency interference, on a power...[Show more]

CollectionsANU Research Publications
Date published: 2016-08-21
Type: Journal article
URI: http://hdl.handle.net/1885/107214
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stw1022

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