Run · HD 139139, the "Random Transiter"
K2 pixel forensics: region tests, telegraph-pixel and timing tests
k2_regions.py and k2_regions2.py assume the saturated core can't change, which produced an apparent ~600:1 preference for real dimming. That is withdrawn: k2_regions3.py treats the whole bleed column as one charge-conserving region, and is the result to use. The telegraph and timing tests were run inline; their numbers are in FINDINGS.md.
Result
| Run | Measured | Result | Against | Decision | Date |
|---|---|---|---|---|---|
| Run | Chi2 of stacked 27-dip deficit vs 'real dimming' and 'bleed column only' (null covariance); depth chi2 vs one amplitude; timing KS/permutation p-values | {'pointing_p': [0.93, 0.96], 'arclength_p': 0.73, 'column_only': {'dof': 2, 'chi2': 0.55}, 'real_dimming': {'dof': 2, 'chi2': 1.03, 'depth_ppm': 211}, 'spot_level_p': 0.3, 'no_signal_chi2': 324, 'thruster_phase_p': 0.52, 'depth_chi2_rednoise': '124/26', 'depth_chi2_published_errors': '184/26'} | 600 random non-dip epochs with the same procedure | Not a fixed-amplitude telegraph pixel and not tied to spacecraft motion; the pixels can't separate real dimming from a glitch confined to the saturated bleed column. |
What it used and found
ANS
EVD
EVD
Parameters
window_d = 2, null_epochs = 600, null_stacks = 4000, in_dip_fraction = 0.7, reference_cadences = 40
Cite it
Mysteries Department. (2026). K2 pixel forensics: region tests, telegraph-pixel and timing tests [Run RUN0DD2GWDZD632]. https://mysteriesdept.com/r/RUN0DD2GWDZD632
@misc{mysteriesdept_run0dd2gwdzd632,
title = {K2 pixel forensics: region tests, telegraph-pixel and timing tests},
author = {{Mysteries Department}},
year = {2026},
note = {Run, catalog key RUN0DD2GWDZD632},
url = {https://mysteriesdept.com/r/RUN0DD2GWDZD632}
}