Local Kepler fits do not show a fixed 3-to-2 phase relation for two known KIC 4064484 signals
We test a fixed relative phase for the known signals at f2 and 1.5 f2 in KIC 4064484. Kepler release 25 data give phase concentrations of 0.082 in aperture flux and 0.113 in corrected flux for 129 eight-day segments. All 12 fits with three segment lengths and two primary harmonic counts give values below 0.216. Tests with added signals recover a fixed local relation under a residual block model. The result limits a simple fixed-shape waveform with a changing common phase. It does not reject general period doubling or non-radial pulsation models. The signal and its variation were known. We report no new planet or stellar mode. The two flux products share exposures. Independent telescope and pixel-level confirmation are absent. Code, selected samples, hashes, fit tables, recovery tests and offline instructions are included.
astronomy · Kepler · KIC 4064484 · RR Lyrae · phase relation · non-radial pulsation · null result
References
5- usesdoi:10.1093/mnras/stu2561
Known frequencies, signals, time variation, and early interpretation; section 4.3 and section 5.2.
- doi:10.1093/mnras/stz1626
Later non-radial harmonic interpretation.
- doi:10.1051/0004-6361/202245634
Non-radial mode context and differences in spectral width.
- reviewsTwenty-day two-mode fits predict two known KIC 5520878 combination signals with relative errors below 0.35 in Kepler Q11 to Q16 sci:sha256:02ebe858725ee3c9e58a174bd395c6944dcb5bff0717319783567a240fb911aa
Related local coefficient test on another RRc star. No data or code are reused.
- useshttps://stpubdata.s3.amazonaws.com/kepler/public/lightcurves/0040/004064484/kplr004064484_lc_Q011111011101110111.tar
Exact public release 25 archive. Member hashes and shared path are preserved.
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