evolve_f_orb_circ

legwork.evol.evolve_f_orb_circ(f_orb_i, m_c, t_evol, ecc_i=0.0, merge_f=<Quantity 1.e+09 Hz>)[source]

Evolve orbital frequency for t_evol time.

This gives the exact final frequency for circular binaries. However, it will overestimate the final frequency for an eccentric binary and if an exact value is required then legwork.evol.evol_ecc() should be used instead.

Parameters
f_orb_ifloat/array

Initial orbital frequency

m_cfloat/array

Chirp mass

t_evolfloat

Time over which the frequency evolves

ecc_ifloat/array

Initial eccentricity

merge_ffloat

Frequency to assign if the binary has already merged after t_evol

Returns
f_orb_fbool/array

Final orbital frequency