Lomb–Scargle Periodogram

Upload 2-3 columns time series data (with Time, Values, Uncertainty), separeted by comma or space, compute L-S with parallel workers and peak annotation, and phase-fold by period.

Notes: - The data will not send to serve, all calculations and plots are loccal - Default f_min ~ 1/T, where T = max(t) - min(t); f_max ~ 0.5 / min dt. - Upload 2-3 columns (third is optional sigma). Lines starting with # are ignored. - Computation runs with Web Workers in parallel.

1) Time series

2) Lomb–Scargle periodogram

3) Phase folding

Data input

CSV or space-separated text. Lines starting with # are ignored. Up to 3 columns: t y [sigma].

Separator

Column map

First row is header

L-S parameters

f_min

f_max

Oversampling (ofac)

Workers

Detrend

Normalization

Use 3rd column sigma as weight

Use P/2 for phase (for double-peaked)

Phase folding

Period P (=1/f)

Phase zero t0

Phase span

Status

Peak: f=-, P=- | Period P=-

Freq points: 0