Speaker
Description
In Nunhokee et al (2025), the MWA EoR Collaboration published the deepest limits on the brightness temperature of the 21cm signal from 800 million years after the Big Bang. This work used all of the observed data from the EoR0 field, and our high-band at 167-197MHz, culminating in 267 hours of clean data. That work reached a limit of 30.2 mK in brightness temperature fluctuation on scales of 20 arcmin, yielding constraints that helps us understand conditions in the early Universe. In this talk, I will describe work (Trott et al 2025, in review) that post-processes these same observations, and uses the Gaussianity of the 21cm signal, relative to contaminants, to improve these results to 21.7 mK on the same scale. This limit is comparable to the deepest limits obtained at higher redshift by the HERA Collaboration.
| Timeslot preferences | 15 mins is fine for this one. |
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