1. RRI Digital Repository
  2. 04. Astronomy and Astrophysics
  3. Research Papers (A&A)
Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8208
Full metadata record
DC FieldValueLanguage
dc.contributor.authorAbdurashidova, Zara-
dc.contributor.authorAdams, Tyrone-
dc.contributor.authorE. Aguirre, James-
dc.contributor.authorAlexander, Paul-
dc.contributor.authorS. Ali, Zaki-
dc.contributor.authorBaartman, Rushelle-
dc.contributor.authorBalfour, Yanga-
dc.contributor.authorBarkana, Rennan-
dc.contributor.authorP. Beardsley, Adam-
dc.contributor.authorBernardi, Gianni-
dc.contributor.authorS. Billings, Tashalee-
dc.contributor.authorD. Bowman, Judd-
dc.contributor.authorF. Bradley, Richard-
dc.contributor.authorBreitman, Daniela-
dc.contributor.authorBull, Philip-
dc.contributor.authorBurba, Jacob-
dc.contributor.authorCarey, Steve-
dc.contributor.authorL. Carilli, Chris-
dc.contributor.authorCheng, Carina-
dc.contributor.authorChoudhuri, Samir-
dc.contributor.authorR. DeBoer, David-
dc.contributor.authorde Lera Acedo, Eloy-
dc.contributor.authorDexter, Matt-
dc.contributor.authorS. Dillon, Joshua-
dc.contributor.authorEly, John-
dc.contributor.authorEwall-Wice, Aaron-
dc.contributor.authorFagnoni, Nicolas-
dc.contributor.authorFialkov, Anastasia-
dc.contributor.authorFritz, Randall-
dc.contributor.authorR. Furlanetto, Steven-
dc.contributor.authorGale-Sides, Kingsley-
dc.contributor.authorGarsden, Hugh-
dc.contributor.authorGlendenning, Brian-
dc.contributor.authorGorce, Adélie-
dc.contributor.authorGorthi, Deepthi-
dc.contributor.authorGreig, Bradley-
dc.contributor.authorGrobbelaar, Jasper-
dc.contributor.authorHalday, Ziyaad-
dc.contributor.authorJ. Hazelton, Bryna-
dc.contributor.authorHeimersheim, Stefan-
dc.contributor.authorN. Hewitt, Jacqueline-
dc.contributor.authorHickish, Jack-
dc.contributor.authorC. Jacobs, Daniel-
dc.contributor.authorJulius, Austin-
dc.contributor.authorS. Kern, Nicholas-
dc.contributor.authorKerrigan, Joshua-
dc.contributor.authorKittiwisit, Piyanat-
dc.contributor.authorA. Kohn, Saul-
dc.contributor.authorKolopanis, Matthew-
dc.contributor.authorLanman, Adam-
dc.contributor.authorLa Plante, Paul-
dc.contributor.authorLewis, David-
dc.contributor.authorLiu, Adrian-
dc.contributor.authorLoots, Anita-
dc.contributor.authorMa, Yin-Zhe-
dc.contributor.authorH. E. MacMahon, David-
dc.contributor.authorMalan, Lourence-
dc.contributor.authorMalgas, Keith-
dc.contributor.authorMalgas, Cresshim-
dc.contributor.authorMaree, Matthys-
dc.contributor.authorMarero, Bradley-
dc.contributor.authorE. Martinot, Zachary-
dc.contributor.authorMcBride, Lisa-
dc.contributor.authorMesinger, Andrei-
dc.contributor.authorMirocha, Jordan-
dc.contributor.authorMolewa, Mathakane-
dc.contributor.authorF. Morales, Miguel-
dc.contributor.authorMosiane, Tshegofalang-
dc.contributor.authorB. Muñoz, Julian-
dc.contributor.authorG. Murray, Steven-
dc.contributor.authorNagpal, Vighnesh-
dc.contributor.authorR. Neben, Abraham-
dc.contributor.authorNikolic, Bojan-
dc.contributor.authorD. Nunhokee, Chuneeta-
dc.contributor.authorNuwegeld, Hans-
dc.contributor.authorR. Parsons, Aaron-
dc.contributor.authorPascua, Robert-
dc.contributor.authorPatra, Nipanjana-
dc.contributor.authorPieterse, Samantha-
dc.contributor.authorQin, Yuxiang-
dc.contributor.authorRazavi-Ghods, Nima-
dc.contributor.authorRobnett, James-
dc.contributor.authorRosie, Kathryn-
dc.contributor.authorG. Santos, Mario-
dc.contributor.authorSimsPeter Sims, Peter-
dc.contributor.authorSingh, Saurabh-
dc.contributor.authorSmith, Craig-
dc.contributor.authorSwarts, Hilton-
dc.contributor.authorTan, Jianrong-
dc.contributor.authorThyagarajan, Nithyanandan-
dc.contributor.authorJ. Wilensky, Michael-
dc.contributor.authorK. G. Williams, Peter-
dc.contributor.authorvan Wyngaarden, Pieter-
dc.contributor.authorZheng, Haoxuan-
dc.date.accessioned2024-01-30T06:03:06Z-
dc.date.available2024-01-30T06:03:06Z-
dc.date.issued2023-03-14-
dc.identifier.citationThe Astrophysical Journal,2023, Vol.945,p.43en_US
dc.identifier.issn0004-637X (print)-
dc.identifier.issn1538-4357 (online)-
dc.identifier.urihttp://hdl.handle.net/2289/8208-
dc.descriptionOpen Accessen_US
dc.description.abstractWe 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 reported limits, we find at 95% confidence that Δ2(k = 0.34 h Mpc−1) 457 mK2 at z = 7.9 and that Δ2(k = 0.36 h Mpc−1) 3496 mK2 at z = 10.4, an improvement by a factor of 2.1 and 2.6, respectively. These limits are mostly consistent with thermal noise over a wide range of k after our data quality cuts, despite performing a relatively conservative analysis designed to minimize signal loss. Our results are validated with both statistical tests on the data and end-to-end pipeline simulations. We also report updated constraints on the astrophysics of reionization and the cosmic dawn. Using multiple independent modeling and inference techniques previously employed by HERA Collaboration, we find that the intergalactic medium must have been heated above the adiabatic cooling limit at least as early as z = 10.4, ruling out a broad set of so called “cold reionization” scenarios. If this heating is due to high-mass X-ray binaries during the cosmic dawn, as is generally believed, our result’s 99% credible interval excludes the local relationship between soft X-ray luminosity and star formation and thus requires heating driven by evolved low-metallicity stars.en_US
dc.language.isoenen_US
dc.publisherAmerican Astronomical Societyen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2022arXiv221004912T/abstracten_US
dc.relation.urihttps://arxiv.org/abs/2210.04912en_US
dc.relation.urihttps://doi.org/10.3847/1538-4357/acaf50en_US
dc.rights2023, The Author(s)en_US
dc.subjectAstronomy data analysis (1858)en_US
dc.subjectRadio interferometers (1345)en_US
dc.subjectIntergalactic medium (813)en_US
dc.subjectReionization (1383)en_US
dc.subjectGalaxy formation (595)en_US
dc.subjectCosmology (343)en_US
dc.titleImproved Constraints on the 21cm EoR Power Spectrum and the X-Ray Heating of the IGM with HERA Phase I Observationsen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (A&A)

Files in This Item:
File Description SizeFormat 
2023_APJ_Vol.945_p43.pdf
  Restricted Access		Open Access15 MBAdobe PDFView/Open Request a copy
Show simple item record


Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.