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dc.contributor.authorde Oliveira Costa, Angelica
dc.contributor.authorEwall-Wice, Aaron Michael
dc.contributor.authorFeng, Lu
dc.contributor.authorHewitt, Jacqueline N
dc.contributor.authorNeben, Abraham Richard
dc.contributor.authorTegmark, Max Erik
dc.contributor.authorMorgan, Eric R.
dc.contributor.authorWilliams, Christopher Leigh
dc.date.accessioned2017-04-26T18:52:34Z
dc.date.available2017-04-26T18:52:34Z
dc.date.issued2016-12
dc.date.submitted2016-10
dc.identifier.issn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1721.1/108427
dc.description.abstractThe detection of redshifted 21 cm emission from the epoch of reionization (EoR) is a challenging task owing to strong foregrounds that dominate the signal. In this paper, we propose a general method, based on the delay spectrum approach, to extract H i power spectra that are applicable to tracking observations using an imaging radio interferometer ("Delay Spectrum with Imaging Arrays"). Our method is based on modeling the H i signal taking into account the impact of wide field effects such as the w-term, which are then used as appropriate weights in cross-correlating the measured visibilities. Our method is applicable to any radio interferometer that tracks a phase center and could be utilized for arrays such as the Murchison Widefield Array (MWA), Low Frequency Array (LOFAR), Giant Meterwave Radio Telescope (GMRT), Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER), and HERA. In the literature the delay spectrum approach has been implemented for near-redundant baselines using drift scan observations. In this paper we explore the scheme for non-redundant tracking arrays. This is the first application of delay spectrum methodology to such data to extract the H i signal. We analyze 3 hr of MWA tracking data on the EoR1 field. We present both two-dimensional (k[subscript ∥],k[subscript ⊥]) and one-dimensional (k) power spectra from the analysis. Our results are in agreement with the findings of other pipelines developed to analyze the MWA EoR data.en_US
dc.language.isoen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.3847/1538-4357/833/2/213en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Astronomical Societyen_US
dc.titleDELAY SPECTRUM WITH PHASE-TRACKING ARRAYS: EXTRACTING THE H i POWER SPECTRUM FROM THE EPOCH OF REIONIZATIONen_US
dc.typeArticleen_US
dc.identifier.citationPaul, Sourabh et al. “DELAY SPECTRUM WITH PHASE-TRACKING ARRAYS: EXTRACTING THE H I POWER SPECTRUM FROM THE EPOCH OF REIONIZATION.” The Astrophysical Journal 833.2 (2016): 213. © 2016 The American Astronomical Society.en_US
dc.contributor.departmentLincoln Laboratoryen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorde Oliveira Costa, Angelica
dc.contributor.mitauthorEwall-Wice, Aaron Michael
dc.contributor.mitauthorFeng, Lu
dc.contributor.mitauthorHewitt, Jacqueline N
dc.contributor.mitauthorNeben, Abraham Richard
dc.contributor.mitauthorTegmark, Max Erik
dc.contributor.mitauthorMorgan, Eric R.
dc.contributor.mitauthorWilliams, Christopher Leigh
dc.relation.journalAstrophysical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsPaul, Sourabh; Sethi, Shiv K.; Morales, Miguel F.; Dwarkanath, K. S.; Shankar, N. Udaya; Subrahmanyan, Ravi; Barry, N.; Beardsley, A. P.; Bowman, Judd D.; Briggs, F.; Carroll, P.; de Oliveira-Costa, A.; Dillon, Joshua S.; Ewall-Wice, A.; Feng, L.; Greenhill, L. J.; Gaensler, B. M.; Hazelton, B. J.; Hewitt, J. N.; Hurley-Walker, N.; Jacobs, D. J.; Kim, Han-Seek; Kittiwisit, P.; Lenc, E.; Line, J.; Loeb, A.; McKinley, B.; Mitchell, D. A.; Neben, A. R.; Offringa, A. R.; Pindor, B.; Pober, J. C.; Procopio, P.; Riding, J.; Sullivan, I. S.; Tegmark, M.; Thyagarajan, Nithyanandan; Tingay, S. J.; Trott, C. M.; Wayth, R. B.; Webster, R. L.; Wyithe, J. S. B.; Cappallo, Roger; Johnston-Hollitt, M.; Kaplan, D. L.; Lonsdale, C. J.; McWhirter, S. R.; Morgan, E.; Oberoi, D.; Ord, S. M.; Prabu, T.; Srivani, K. S.; Williams, A.; Williams, C. L.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-0086-7363
dc.identifier.orcidhttps://orcid.org/0000-0003-0422-2324
dc.identifier.orcidhttps://orcid.org/0000-0002-4117-570X
dc.identifier.orcidhttps://orcid.org/0000-0001-7776-7240
dc.identifier.orcidhttps://orcid.org/0000-0001-7670-7190
dc.identifier.orcidhttps://orcid.org/0000-0001-7130-208X
mit.licensePUBLISHER_POLICYen_US


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