English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

21 cm Epoch of Reionization observations promise to transform ourunderstanding of galaxy formation, but these observations are impossiblewithout unprecedented levels of instrument calibration. We present end-to-endsimulations of a full EoR power spectrum analysis including all of the majorcomponents of a real data processing pipeline: models of astrophysicalforegrounds and EoR signal, frequency-dependent instrument effects, sky-basedantenna calibration, and the full PS analysis. This study reveals thattraditional sky-based per-frequency antenna calibration can only be implementedin EoR measurement analyses if the calibration model is unrealisticallyaccurate. For reasonable levels of catalog completeness, the calibrationintroduces contamination in otherwise foreground-free power spectrum modes,precluding a PS measurement. We explore the origin of this contamination andpotential mitigation techniques. We show that there is a strong jointconstraint on the precision of the calibration catalog and the inherentspectral smoothness of antennae, and that this has significant implications forthe instrumental design of the SKA and other future EoR observatories.

Calibration Requirements for Detecting the 21 cm Epoch of Reionization Power Spectrum and Implications for the SKA