Exploring Technosignatures: Evidence of Extraterrestrial Life

We investigate the microlensing detectability of extraterrestrial technosignatures originating from Dyson sphere-like structures, such as Dyson Swarms surrounding primordial black holes. These hypothetical swarms consist of stochastically varying, partially opaque structures that could modulate standard microlensing light curves through time-dependent transmission effects.

A probabilistic framework is introduced that includes a stochastic transmission model governed by variable optical depth and random gap distributions. A parameter scan is performed to generate heatmaps of the optical transit duration.

The study also explores infrared excess radiation and peak emission wavelength as complementary observational signatures. Furthermore, the effective optical depth and the anomalous microlensing event rate for these stochastic structures are defined and analyzed.

These findings provide a new avenue for searching extraterrestrial advanced civilizations by extending microlensing studies to include artificial, dynamic modulation signatures. The research was submitted on December 8, 2025, to ArXiv under the category of Instrumentation and Methods for Astrophysics.