Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/27311
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | de Lera Acedo, Eloy | en_US |
dc.contributor.author | Trott, Cathryn M. | en_US |
dc.contributor.author | Wayth, Randall B. | en_US |
dc.contributor.author | Fagnoni, Nicolas | en_US |
dc.contributor.author | BERNARDI, GIANNI | en_US |
dc.contributor.author | Wakley, Brett | en_US |
dc.contributor.author | Koopmans, Léon V.E. | en_US |
dc.contributor.author | Faulkner, Andrew J. | en_US |
dc.contributor.author | bij de Vaate, Jan Geralt | en_US |
dc.date.accessioned | 2020-09-11T10:26:40Z | - |
dc.date.available | 2020-09-11T10:26:40Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27311 | - |
dc.description.abstract | This paper is the first in a series of papers describing the impact of antenna instrumental artefacts on the 21 cm cosmology experiments to be carried out by the low frequency instrument (SKA1-LOW) of the Square Kilometre Array telescope (SKA), I.e. the Cosmic Dawn (CD) and the Epoch of Reionization (EoR). The smoothness of the passband response of the current log-periodic antenna being developed for the SKA1-LOW is analysed using numerical electromagnetic simulations. The amplitude variations over the frequency range are characterized using low-order polynomials defined locally, in order to study the impact of the passband smoothness in the instrument calibration and CD/EoR Science. A solution is offered to correct a fast ripple found at 60 MHz during a test campaign at the SKA site at the Murchison Radio-astronomy Observatory, Western Australia in 2015 September with a minor impact on the telescope's performance and design. A comparison with the Hydrogen Epoch of Reionization Array antenna is also shown demonstrating the potential use of the SKA1-LOW antenna for the delay-spectrum technique to detect the EoR. | en_US |
dc.language.iso | eng | en_US |
dc.title | Spectral performance of SKA Log-periodic Antennas I: mitigating spectral artefacts in SKA1-LOW 21 cm cosmology experiments | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stx904 | en_US |
dc.identifier.scopus | 2-s2.0-85020296460 | en_US |
dc.identifier.isi | 000406836200008 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/469/3/2662/3605382 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 469 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 2662 | en_US |
dc.relation.lastpage | 2671 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | AUS | en_US |
dc.contributor.country | NLD | 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.identifier.adsbibcode | 2017MNRAS.469.2662D | en_US |
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.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-0916-7443 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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