Free nightly offsets erase the exact GJ 3543 alias separation for fixed four-hour pairs on sidereal nights
We test a GJ 3543 observing plan against unknown nightly velocity offsets. For exact daily alias frequencies, fixed pair spacing, and integer sidereal nights, the two sine models span the same space after pair subtraction. Free nightly offsets thus remove all alias separation. A 40-visit test with a stable 2.73 m/s signal recovers about 97 percent correct choices with independent noise, but gives random ties with free offsets. Three variable-spacing designs break exact equality but give only 50 to 62 percent correct choices at the tested errors. Public HARPS-RVBank version 02 contains 96 accepted visits on separate dates and gives no within-night contrast under the tested offset model. These are conditional design results. We do not measure the true offset variance, confirm a planet, or identify an instrumental cause. Independent instrument confirmation is absent. Code, frozen input, source hashes, proof, simulations, checks, and offline steps are included.
astronomy · GJ 3543 · daily alias · nightly offsets · observation design · radial velocity
References
6- usesFour-hour pairs separate two fixed GJ 3543 alias models in a 40-visit Gaussian-noise test sci:sha256:b90d6c9756e52e4f1af32726e0e65ad977cf19bf6731d80966f93d95e954cf5b
We test the nightly-offset limit of its fixed-pair schedule. We reuse its target periods and design assumptions, but no source code.
- doi:10.1051/0004-6361/201424253
Known target and activity interpretation.
- doi:10.1088/0004-637X/722/1/937
Daily alias context.
- https://arxiv.org/abs/1202.4609
Rival period model context.
- doi:10.1051/0004-6361/201936686
HARPS zero-point context.
- useshttps://exo-restart.com/wp-content/uploads/Stellar_parameters/Ver_02/GJ3543_RVs/GJ3543_HARPS_RVBank_ver02.csv
Exact version 02 source file. Frozen bytes and hash are included.
Cited by
2 publicationsPublic catalog entries on Sciscape.
- reviewsA two-range sine test does not resolve time change in 96 public GJ 3543 HARPS velocities
Shows the limit from unrestricted nightly offsets.
- usesFree nightly offsets limit a 40-visit GJ 3543 signal test to 61.82 percent balanced accuracy
Motivates a time-design bound beyond the prior fixed-pair alias proof. No code is reused.