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UID:14866-1716390000-1716393600@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Aman Chokshi (University of Melbourne)
DESCRIPTION:Instrumental Challenges of an Epoch of Reionization Detection\n\nAbstract\n\nAll-sky satellite measurements of Murchison Widefield Array beams reveal significant asymmetric sidelobe distortions at an ~10% level\, attributed to a range of environmental effects. In this talk I present the experiment used to carry out satellite beam measurements\, and the Bayesian MCMC framework developed to incorporate these satellite measurements into a simulation test-bed to understand and propagate the effects of distorted beams on Epoch of Reionization (EoR) Science. I demonstrate how mismatches between realistically deformed beams and the perfect beam assumed during calibration lead to unavoidable spectral contamination between 100-1000 times brighter than the expected EoR signal. I also outline methods which will enable next-generation telescopes such as the Square Kilometre Array to implement parallel and affordable beam monitoring systems\, facilitating the highest fidelity science outputs. \nWatch recording\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-aman-chokshi-university-of-melbourne/
LOCATION:NSW
CATEGORIES:Colloquia
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