Estimating Finite Source Effects in Microlensing Events due to Free-Floating Planets with the Euclid Survey

Figure 1

(a) Time variation of the amplification for a microlensing event when the source is assumed to be point-like (continuous line) and extended with a uniform brightness profile (dashed line). The event parameters are , , and hours. The duration of the lens transit over the source disk turns out to be hours, consistent with (1). (b) The residuals between the two curves as a function of time (in units of the Einstein time of the event).

(a)

(b)