Evidence of Ultrafaint Radio Frequency Interference in Deep 21 cm Epoch of Reionization Power Spectra with the Murchison Wide-field Array oleh Michael J. Wilensky, Miguel F. Morales, Bryna J. Hazelton, Pyxie L. Star, Nichole Barry, Ruby Byrne, C. H. Jordan, Daniel C. Jacobs, Jonathan C. Pober, C. M. Trott