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    _lombscargle(x, y, freqs)

    Computes the Lomb-Scargle periodogram.

    Parameters
    ----------
    x : array_like
        Sample times.
    y : array_like
        Measurement values (must be registered so the mean is zero).
    freqs : array_like
        Angular frequencies for output periodogram.

    Returns
    -------
    pgram : array_like
        Lomb-Scargle periodogram.

    Raises
    ------
    ValueError
        If the input arrays `x` and `y` do not have the same shape.

    See also
    --------
    lombscargle

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