Period-finding via the string length method using trial periods

Parameters

• min_period: Minimum period to test (units should be 1/time units of times_since_epoch).
• max_period: Maximum period to test.
• step_size: Step size for period testing.
• times_since_epoch: A 1d tensor of time values of time units since epoch
• samples: A 1d tensor of sample values.

Returns

• estimated_period: The period that minimizes the sum of distances.

See https://ui.adsabs.harvard.edu/abs/1983MNRAS.203..917D/abstract for background