MWA Project Meeting - 2026

RFI Mitigation and Power Spectrum Analysis of Newly Upgraded 2025 MWA Phase III High-Band EoR0 Data

Not scheduled

20m

Main sessions: Room 190, Break-out sessions: Room 125 (Engineering Research Center, Brown University)

Presentation Epoch of Reionization

Speaker

Morgan Lee (Brown University)

Description

The 2025 Phase III upgrade offers the highest-quality EoR data from the MWA to date, but the critical challenge of locating clean data from this season remains. I will present the analysis of all 2025 MWA Phase III high-band EoR0 observations with a focus on RFI detection and a study of RFI flagging strategy on the power spectrum. To-date, we have used two distinct RFI flagging methods, namely Chi-Squared and Sky-Subtracted Incoherent Noise Spectra (SSINS). Initial investigations with these approaches used in tandem show that the subset of completely clean observations is very small. Thus, I will also discuss the analysis and removal of specific recurring RFI to recover potentially clean data.