3 papers
astro-ph.IM2026
Red noise-based false alarm thresholds for astrophysical periodograms via Whittle's approximation to the likelihood
Amna Ejaz, Sarah Dodson-Robinson, Charlotte Haley
Astronomers who search for periodic signals using Lomb-Scargle periodograms rely on false alarm level (FAL) estimates to identify statistically significant peaks. Although FALs are…
astro-ph.IM2025
The Rayleigh Criterion: Resolution Limits of Astronomical Periodograms
V. Ramirez Delgado, J. S. Caicedo Vivas, S. Dodson-Robinson +1
The Rayleigh criterion determines the resolution limit of a periodogram, which is the minimum frequency separation required to barely resolve two sinusoids. Failing to consider the…
astro-ph.SR2024
Examining the rotation of the planet-hosting M dwarf GJ 3942
Andrew Fonseca, Sarah Dodson-Robinson
Based on radial velocities, EXORAP photometry, and activity indicators, the HADES team reported a 16.3-day rotation period for the M dwarf GJ 3942. However, an RV--H magnitude-…