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dc.contributor.authorMesinger, Andrei
dc.contributor.authorPober, Jonathan
dc.contributor.authorEwall-Wice, Aaron Michael
dc.contributor.authorHewitt, Jacqueline N
dc.contributor.authorDillon, Joshua Shane
dc.contributor.authorLiu, Adrian Chi-Yan
dc.date.accessioned2017-04-18T19:32:18Z
dc.date.available2017-04-18T19:32:18Z
dc.date.issued2016-02
dc.date.submitted2016-02
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.urihttp://hdl.handle.net/1721.1/108228
dc.description.abstractWe use the Fisher matrix formalism and seminumerical simulations to derive quantitative predictions of the constraints that power spectrum measurements on next-generation interferometers, such as the Hydrogen Epoch of Reionization Array (HERA) and the Square Kilometre Array (SKA), will place on the characteristics of the X-ray sources that heated the high-redshift intergalactic medium. Incorporating observations between z = 5 and 25, we find that the proposed 331 element HERA and SKA phase 1 will be capable of placing ≲ 10 per cent constraints on the spectral properties of these first X-ray sources, even if one is unable to perform measurements within the foreground contaminated ‘wedge’ or the FM band. When accounting for the enhancement in power spectrum amplitude from spin temperature fluctuations, we find that the observable signatures of reionization extend well beyond the peak in the power spectrum usually associated with it. We also find that lower redshift degeneracies between the signatures of heating and reionization physics lead to errors on reionization parameters that are significantly greater than previously predicted. Observations over the heating epoch are able to break these degeneracies and improve our constraints considerably. For these two reasons, 21-cm observations during the heating epoch significantly enhance our understanding of reionization as well.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (AST-0821321)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (1122374)en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (HST-HF2-51363.001-A)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (1302774)en_US
dc.language.isoen_US
dc.publisherOxford University Pressen_US
dc.relation.isversionofhttp://dx.doi.org/10.1093/mnras/stw452en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourcearXiven_US
dc.titleConstraining high-redshift X-ray sources with next generation 21-cm power spectrum measurementsen_US
dc.typeArticleen_US
dc.identifier.citationEwall-Wice, Aaron; Hewitt, Jacqueline; Mesinger, Andrei; Dillon, Joshua S.; Liu, Adrian and Pober, Jonathan. “Constraining High-Redshift X-Ray Sources with Next Generation 21-Cm Power Spectrum Measurements.” Monthly Notices of the Royal Astronomical Society 458, no. 3 (February 26, 2016): 2710–2724. © 2016 The Authorsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorEwall-Wice, Aaron Michael
dc.contributor.mitauthorHewitt, Jacqueline N
dc.contributor.mitauthorDillon, Joshua Shane
dc.contributor.mitauthorLiu, Adrian Chi-Yan
dc.relation.journalMonthly Notices of the Royal Astronomical Societyen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsEwall-Wice, Aaron; Hewitt, Jacqueline; Mesinger, Andrei; Dillon, Joshua S.; Liu, Adrian; Pober, Jonathanen_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-0086-7363
dc.identifier.orcidhttps://orcid.org/0000-0002-4117-570X
dc.identifier.orcidhttps://orcid.org/0000-0003-3336-9958
dc.identifier.orcidhttps://orcid.org/0000-0001-6876-0928
mit.licenseOPEN_ACCESS_POLICYen_US


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