coefficients_fsfb

rubin_sim.maf.maf_contrib.coefficients_fsfb(t, t0, te, u0, fs, fb)

Coefficients for calculating the first derivatives wrt fs,fb in the Fisher (information) matrix in an effective way, optimized with sympy and cse this function needs to be evaluated for each passband respectively. via Markus Hundertmark markus.hundertmark@uni-heidelberg.de

Parameters:

tfloat

The time of observation (days usually as JD or HJD)

u0float

The impact parameter (0 means high magnification)

tefloat

Einstein crossing time (days)

t0float

Time of peak (days usually as JD or HJD)

fsfloat

Source flux (counts/s but here fs = 10.**(-0.4*mag_source) in the respective passband)

fbfloat

Blend flux (counts/s but here fs = 10.**(-0.4*mag_blend) in the respective passband)