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About

M. Ratajczak is a Polish astronomer whose research sits at the intersection of binary star astrophysics and exoplanet detection, with a particular focus on eclipsing binary systems and the search for circumbinary planets. A central contributor to Project Solaris — a pioneering global network of four autonomous robotic observatories strategically positioned across the Southern Hemisphere — Ratajczak has helped develop the infrastructure and methodology needed for sustained, high-cadence photometric monitoring of eclipsing binaries. The project's primary scientific goal is identifying circumbinary companions through eclipse timing variations (ETVs), a technique that demands the long time-baseline coverage that dedicated networks like Solaris uniquely provide, complementing space missions such as Kepler and TESS. Ratajczak's most-cited work (37 citations) delivers a detailed orbital and physical characterization of HD 187669, a rare totally eclipsing double-giant system, combining multi-band photometry from ASAS and SuperWASP archives with high-precision spectroscopy. This contribution exemplifies a meticulous approach to stellar parameter determination in evolved binary systems. Across their body of work, Ratajczak has advanced both the technical frameworks for autonomous observatory operations and the observational strategies driving circumbinary planet discovery, making meaningful contributions to a specialized but rapidly growing corner of modern astrophysics.