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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29067
Title: A Simplified, Lossless Reanalysis of PAPER-64
Authors: Kolopanis, Matthew
Jacobs, Daniel C.
Cheng, Carina
Parsons, Aaron R.
Kohn, Saul A.
Pober, Jonathan C.
Aguirre, James E.
Ali, Zaki S.
BERNARDI, GIANNI 
Bradley, Richard F.
Carilli, Chris L.
DeBoer, David R.
Dexter, Matthew R.
Dillon, Joshua S.
Kerrigan, Joshua
Klima, Pat
Liu, Adrian
MacMahon, David H. E.
Moore, David F.
Thyagarajan, Nithyanandan
Nunhokee, Chuneeta D.
Walbrugh, William P.
Walker, Andre
Issue Date: 2019
Journal: THE ASTROPHYSICAL JOURNAL 
Number: 883
Issue: 2
First Page: 133
Abstract: We present limits on the 21 cm power spectrum from the Epoch of Reionization using data from the 64 antenna configuration of the Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) analyzed through a power spectrum pipeline independent from previous PAPER analyses. Previously reported results from PAPER have been found to contain significant signal loss. Several lossy steps from previous PAPER pipelines have not been included in this analysis, namely delay-based foreground filtering, optimal fringe-rate filtering, and empirical covariance-based estimators. Steps that remain in common with previous analyses include redundant calibration and local sidereal time (LST) binning. The power spectra reported here are effectively the result of applying a linear Fourier transform analysis to the calibrated, LST-binned data. This analysis also uses more data than previous publications, including the complete available redshift range of z ∼ 7.5 to 11. In previous PAPER analyses, many power spectrum measurements were found to be detections of noncosmological power at levels of significance ranging from two to hundreds of times the theoretical noise. Here, excess power is examined using redundancy between baselines and power spectrum jackknives. The upper limits we find on the 21 cm power spectrum from reionization are {(1500{mK})}2, {(1900{mK})}2, {(280{mK})}2, {(200{mK})}2, {(380{mK})}2, and {(300{mK})}2 at redshifts z = 10.87, 9.93, 8.68, 8.37, 8.13, and 7.48, respectively. For reasons described in Cheng et al., these limits supersede all previous PAPER results.
URI: http://hdl.handle.net/20.500.12386/29067
URL: https://iopscience.iop.org/article/10.3847/1538-4357/ab3e3a
ISSN: 0004-637X
DOI: 10.3847/1538-4357/ab3e3a
Bibcode ADS: 2019ApJ...883..133K
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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