Two telescope samples show no clear excess fluence similarity between consecutive groups of FRB 20220912A

We test whether consecutive detected burst groups have similar fluences in two public samples of FRB 20220912A. The test compares squared log-fluence differences with within-session shuffles. CHIME Catalog 2 gives a roughness ratio of 1.212 in 47 pairs from nine sessions, with a lower-tail shuffle probability of 0.949. Nancay gives 0.980 in 550 pairs from 27 sessions, with probability 0.334. Neither sample shows clear excess similarity. Wait cuts, close-burst grouping, time splits, and an Nancay high-signal cut retain this result. The Nancay result supports an earlier published null test. A fixed-layout simulation detects a latent correlation of 0.3 in 99.35 percent of Nancay trials but only 26.65 percent of CHIME trials. This simulation does not include missing bursts or the detection pipeline. Band-limited fluence need not trace released energy. No new source or physical signal is confirmed. The package contains original code, aggregate results, source hashes, a figure, and retrieval steps. External source rows are not bundled.

astronomy · FRB 20220912A · fluence · serial dependence · CHIME · Nancay · permutation test · null result