Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31069
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Abhik Ghosh | en_US |
dc.contributor.author | Florent Mertens | en_US |
dc.contributor.author | BERNARDI, GIANNI | en_US |
dc.contributor.author | Mário G. Santos | en_US |
dc.contributor.author | Nicholas S. Kern | en_US |
dc.contributor.author | Christopher L. Carilli | en_US |
dc.contributor.author | Trienko L. Grobler | en_US |
dc.contributor.author | Léon V. E. Koopmans | en_US |
dc.contributor.author | Daniel C. Jacobs | en_US |
dc.contributor.author | Adrian Liu | en_US |
dc.contributor.author | Aaron R. Parsons | en_US |
dc.contributor.author | Miguel F. Morales | en_US |
dc.contributor.author | James E. Aguirre | en_US |
dc.contributor.author | Joshua S. Dillon | en_US |
dc.contributor.author | Bryna J. Hazelton | en_US |
dc.contributor.author | Oleg M. Smirnov | en_US |
dc.contributor.author | Bharat K. Gehlot | en_US |
dc.contributor.author | Siyanda Matika | en_US |
dc.contributor.author | Paul Alexander | en_US |
dc.contributor.author | Zaki S. Ali | en_US |
dc.contributor.author | Adam P. Beardsley | en_US |
dc.contributor.author | Roshan K. Benefo | en_US |
dc.contributor.author | Tashalee S. Billings | en_US |
dc.contributor.author | Judd D. Bowman | en_US |
dc.contributor.author | Richard F. Bradley | en_US |
dc.contributor.author | Carina Cheng | en_US |
dc.contributor.author | Paul M. Chichura | en_US |
dc.contributor.author | David R. DeBoer | en_US |
dc.contributor.author | Eloy de Lera Acedo | en_US |
dc.contributor.author | Aaron Ewall-Wice | en_US |
dc.contributor.author | Gcobisa Fadana | en_US |
dc.contributor.author | Nicolas Fagnoni | en_US |
dc.contributor.author | Austin F. Fortino | en_US |
dc.contributor.author | Randall Fritz | en_US |
dc.contributor.author | Steve R. Furlanetto | en_US |
dc.contributor.author | Samavarti Gallardo | en_US |
dc.contributor.author | Brian Glendenning | en_US |
dc.contributor.author | Deepthi Gorthi | en_US |
dc.contributor.author | Bradley Greig | en_US |
dc.contributor.author | Jasper Grobbelaar | en_US |
dc.contributor.author | Jack Hickish | en_US |
dc.contributor.author | Alec Josaitis | en_US |
dc.contributor.author | Austin Julius | en_US |
dc.contributor.author | Amy S. Igarashi | en_US |
dc.contributor.author | MacCalvin Kariseb | en_US |
dc.contributor.author | Saul A. Kohn | en_US |
dc.contributor.author | Matthew Kolopanis | en_US |
dc.contributor.author | Telalo Lekalake | en_US |
dc.contributor.author | Anita Loots | en_US |
dc.contributor.author | David MacMahon | en_US |
dc.contributor.author | Lourence Malan | en_US |
dc.contributor.author | Cresshim Malgas | en_US |
dc.contributor.author | Matthys Maree | en_US |
dc.contributor.author | Zachary E. Martinot | en_US |
dc.contributor.author | Nathan Mathison | en_US |
dc.contributor.author | Eunice Matsetela | en_US |
dc.contributor.author | Andrei Mesinger | en_US |
dc.contributor.author | Abraham R. Neben | en_US |
dc.contributor.author | Bojan Nikolic | en_US |
dc.contributor.author | Chuneeta D. Nunhokee | en_US |
dc.contributor.author | Nipanjana Patra | en_US |
dc.contributor.author | Samantha Pieterse | en_US |
dc.contributor.author | Nima Razavi-Ghods | en_US |
dc.contributor.author | Jon Ringuette | en_US |
dc.contributor.author | James Robnett | en_US |
dc.contributor.author | Kathryn Rosie | en_US |
dc.contributor.author | Raddwine Sell | en_US |
dc.contributor.author | Craig Smith | en_US |
dc.contributor.author | Angelo Syce | en_US |
dc.contributor.author | Max Tegmark | en_US |
dc.contributor.author | Nithyanandan Thyagarajan | en_US |
dc.contributor.author | Peter K. G. Williams | en_US |
dc.contributor.author | Haoxuan Zheng | en_US |
dc.date.accessioned | 2021-11-12T10:00:28Z | - |
dc.date.available | 2021-11-12T10:00:28Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31069 | - |
dc.description.abstract | The key challenge in the observation of the redshifted 21-cm signal from cosmic reionization is its separation from the much brighter foreground emission. Such separation relies on the different spectral properties of the two components, although, in real life, the foreground intrinsic spectrum is often corrupted by the instrumental response, inducing systematic effects that can further jeopardize the measurement of the 21-cm signal. In this paper, we use Gaussian Process Regression to model both foreground emission and instrumental systematics in $\sim 2$ hours of data from the Hydrogen Epoch of Reionization Array. We find that a simple co-variance model with three components matches the data well, giving a residual power spectrum with white noise properties. These consist of an "intrinsic" and instrumentally corrupted component with a coherence-scale of 20 MHz and 2.4 MHz respectively (dominating the line of sight power spectrum over scales $k_{\parallel} \le 0.2$ h cMpc$^{-1}$) and a baseline dependent periodic signal with a period of $\sim 1$ MHz (dominating over $k_{\parallel} \sim 0.4 - 0.8$h cMpc$^{-1}$) which should be distinguishable from the 21-cm EoR signal whose typical coherence-scales is $\sim 0.8$ MHz. | en_US |
dc.language.iso | eng | en_US |
dc.title | Foreground modelling via Gaussian process regression: an application to HERA data | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/staa1331 | en_US |
dc.identifier.scopus | 2-s2.0-85091964744 | en_US |
dc.identifier.isi | WOS:000543025500023 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/495/3/2813/5837088 | en_US |
dc.identifier.url | http://arxiv.org/abs/2004.06041v2 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 495 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 2813 | en_US |
dc.relation.lastpage | 2826 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | ZAF | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-0916-7443 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
staa1331-compr.pdf | Pdf editoriale | 8.54 MB | Adobe PDF | View/Open |
ghosh20_arxiv.pdf | postprint | 2.15 MB | Adobe PDF | View/Open |
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