Microlensing Signatures of Dyson Sphere-like Structures around Primordial Black Holes as Technosignatures of Extraterrestrial Advanced Civilizations
arXiv:2512.07924 · doi:10.3847/1538-4357/ae29b6
Abstract
We investigate the microlensing detectability of extraterrestrial technosignatures originating from Dyson sphere \textendash like structures, such as Dyson Swarms surrounding primordial black holes (PBHs). These hypothetical swarms consist of stochastically varying, partially opaque structures that could modulate standard microlensing light curves through time-dependent transmission effects. We introduce a probabilistic framework that includes a stochastic transmission model governed by variable optical depth and random gap distributions. We perform a parameter scan and generate heatmaps of the optical transit duration. We study the infrared excess radiation and peak emission wavelength as complementary observational signatures. Additionally, we define and analyze the effective optical depth and the anomalous microlensing event rate for these stochastic structures. Our findings provide a new avenue for searching for extraterrestrial advanced civilizations by extending microlensing studies to include artificial, dynamic modulation signatures.
9 pages, 7 figures, 1 table. Accepted for publication in the Astrophysical Journal
References in corpus (20)
- A Universal Density Profile from Hierarchical Clustering
- Did LIGO detect dark matter?
- Primordial Black Holes as a dark matter candidate
- Cosmic microwave background limits on accreting primordial black holes
- Effect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates
- Planet Hunters X. KIC 8462852 - Where's the Flux?
- Pandeia: A Multi-mission Exposure Time Calculator for JWST and WFIRST
- The High Latitude Spectroscopic Survey on the Nancy Grace Roman Space Telescope
- The Ĝ Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. I. Background and Justification
- Dyson Spheres
- Gravitational Microlensing I: A Unique Astrophysical Tool
- Primordial black holes as seeds of magnetic fields in the universe
- A Dyson Sphere around a black hole
- Project Hephaistos I. Upper limits on partial Dyson spheres in the Milky Way
- Viability of a Dyson Swarm as a Form of Dyson Sphere
- Gravitational Microlensing Events as a Target for SETI project
- In Search of Extraterrestrial Artificial Intelligence Through Dyson Sphere-like structures around Primordial Black Holes
- High-resolution imaging of the radio source associated with Project Hephaistos Dyson Sphere Candidate G
- SETI@home: Data Analysis and Findings
- Ringworlds and Dyson spheres can be stable