Antenna beam characterization for the global 21-cm experiment LEDA and its impact on signal model parameter reconstruction

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dc.contributor.authorSpinelli, Marta
dc.contributor.authorKyriakou, George A.
dc.contributor.authorBernardi, Gianni
dc.date.accessioned2022-09-20T08:07:22Z
dc.date.available2022-09-20T08:07:22Z
dc.date.issued2022
dc.description.abstractCosmic dawn, the onset of star formation in the early universe, can in principle be studied via the 21-cm transition of neutral hydrogen, for which a sky-averaged absorption signal, redshifted to MHz frequencies, is predicted to be O(10-100) mK. Detection requires separation of the 21-cm signal from bright chromatic foreground emission due to Galactic structure, and the characterization of how it couples to instrumental response. In this work, we present characterization of antenna gain patterns for the Large-aperture Experiment to detect the Dark Ages (LEDA) via simulations, assessing the effects of the antenna ground-plane geometries used, and measured soil properties.en_US
dc.identifier.citationSpinelli, M. et al. (2022). Antenna beam characterization for the global 21-cm experiment LEDA and its impact on signal model parameter reconstruction. Monthly Notices of the Royal Astronomical Society, 515(2), 1580-1597. 10.1093/mnras/stac1804en_US
dc.identifier.issn1365-2966
dc.identifier.uri10.1093/mnras/stac1804
dc.identifier.urihttp://hdl.handle.net/10566/7922
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.subjectDark agesen_US
dc.subjectAstronomyen_US
dc.subjectAstrophysicsen_US
dc.subjectAntenna groundsen_US
dc.subjectCosmologyen_US
dc.titleAntenna beam characterization for the global 21-cm experiment LEDA and its impact on signal model parameter reconstructionen_US
dc.typeArticleen_US

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