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Added a very basic reflected light approximation to SecondaryEclipseLightCurve WIP #141

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Added a very basic reflected light approximation to SecondaryEclipseLightCurve WIP #141

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1bb32d0
added a silly reflected light approximation to secondary WIP
christinahedges Feb 1, 2021
69a42a5
added a silly reflected light approximation to secondary WIP
christinahedges Feb 1, 2021
7bf5e2c
complying with style
christinahedges Feb 1, 2021
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12 changes: 12 additions & 0 deletions src/exoplanet/light_curves/secondary_eclipse.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,9 @@

__all__ = ["SecondaryEclipseLightCurve"]

import numpy as np
from theano.tensor import cos

from ..utils import as_tensor_variable
from .limb_dark import LimbDarkLightCurve

Expand Down Expand Up @@ -38,6 +41,8 @@ def get_light_curve(
order=0,
use_in_transit=None,
light_delay=False,
reflected=False,
lag=0,
):
r = as_tensor_variable(r)
orbit2 = orbit._flip(r)
Expand All @@ -64,5 +69,12 @@ def get_light_curve(

k = r / orbit.r_star
flux_ratio = self.surface_brightness_ratio * k ** 2
if reflected:
phase = (t - orbit2.t0) / orbit2.period % 1
phase_curve = cos(2 * phase * np.pi + lag)[:, None]
lc2_w_phase_curve = (lc2) + phase_curve * 0 ** (-lc2)
return (lc1 + lc2_w_phase_curve * flux_ratio + flux_ratio) / (
1 + flux_ratio
)

return (lc1 + flux_ratio * lc2) / (1 + flux_ratio)