CONAN.utils.lambertian_atm_variation

CONAN.utils.lambertian_atm_variation#

CONAN.utils.lambertian_atm_variation(phi, Fd=0, Fn=0, delta_deg=0, inc_rad=np.pi / 2, night_phase_var=False)#

Calculate the phase curve of a planet approximated by a lambertian function. Eq. 3 of Esteves+2013 (https://iopscience.iop.org/article/10.1088/0004-637X/772/1/51) is used to calculate the flux variation.

Parameters:

  • phi (array-like) – phase angle (2*pi*phase for circular orbit) or true anomaly+omega-pi/2 in radians.

  • Fd (float) – Dayside flux/occultation depth

  • Fn (float) – night side flux

  • delta_deg (float) – hotspot offset in degrees.

Returns:

F – planetary flux as a function of phase

Return type:

array-like

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