redback.transient_models.fireball_models.predeceleration

redback.transient_models.fireball_models.predeceleration(time, aa, mm, t0, **kwargs)

Parameters:

• time – time array in seconds

• aa – amplitude term for powerlaw

• mm – deceleration powerlaw gradient; typically 3 but depends on physics

• t0 – time GRB went off.

• kwargs – None

Returns:

deceleration powerlaw; units are arbitrary and dependent on a_1.