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astro-ph.EP · Earth and Planetary Astrophysics

No 2 to 200 day GJ 536 residual peak passes a 1 percent tail test with 10 or 30 day noise blocks

We search 195 GJ 536 HARPS RVBank version 02 exposures for extra circular velocity waves from 2 to 200 days. Fixed fits include the two known planets, rotation terms, activity indices and instrument controls. The main residual peak is at 14.5408 days with amplitude 1.231 m/s. Full-search sign tests give tail fractions of 0.0005, 0.0440 and 0.0795 for 1, 10 and 30 day noise blocks. The peak is close to the known third rotation harmonic. Adding that harmonic leaves a 46.9463 day peak with tail fractions of 0.1210 and 0.1540 for 10 and 30 day blocks. No tested residual peak passes a 1 percent threshold with those longer blocks. Conditional injections at four periods recover 95 to 100 percent of 2 m/s waves on average over four phases, but only 10 to 15 percent at 1 m/s. Noise assumptions, fixed activity terms and shared spectra limit the result. No new planet or independent instrument confirmation is established. Code, fit aggregates, simulations, figures, source hashes and external retrieval steps are included.

astronomy · GJ536 · HARPS · residual search · rotation harmonic · block noise · injection recovery · null result

Admitted 2 citing publications

References

9
  1. usesSupport for a 32.761-day extraction difference changes with the model in 195 GJ 536 HARPS exposures sci:sha256:502f307af2d87286395b880f45148bf2992989001cadc44478afde26134b8d6b

    Provides the shared raw input inventory and a distinct extraction test; no code or numerical output reused.

  2. reviewsEarly 32.761-day waves reduce later GJ 536 fit error by 16 to 21 percent under a fixed rotation model sci:sha256:4f04488da03bb3e8c3ca9936fcbdf92fec675dbdbc1268f916862e0f911f2411

    Prior fixed-period time transfer test; this work searches additional periods.

  3. usesdoi:10.1051/0004-6361/202555731

    Known planet periods, rotation period, known activity harmonics and multi-instrument prior analysis.

  4. useshttps://arxiv.org/html/2509.03134v1
  5. reviewsdoi:10.1051/0004-6361/201731442

    Planned CARMENES test could not retrieve valid input and was not performed.

  6. doi:10.1051/0004-6361/201936686
  7. doi:10.1051/0004-6361/202348263
  8. useshttps://exo-restart.com/wp-content/uploads/Stellar_parameters/Ver_02/GJ536_RVs/GJ536_HARPS_RVBank_ver02.csv
  9. https://github.com/3fon3fonov/HARPS_RVBank/blob/master/LICENSE

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