Georgios Pappas

Georgios Pappas is an Associate Professor at the School of Physics, Aristotle University of Thessaloniki since July 2025. Previously, he held positions as Assistant Professor there (2018–present), Researcher at Sapienza University of Rome (2018), and multiple Research Fellow/Postdoc roles at institutions including the University of Nottingham (2017–2018), Instituto Superior Técnico (2016–2017), University of Mississippi (2015–2016), and earlier postdoc/research roles since 2012.

• PhD in Physics (2005–2012), MSc (2001–2005), and Bachelor's (1996–2001) from the National and Kapodistrian University of Athens

His research focuses on gravitational physics, particularly black holes and neutron stars in the context of general relativity, alternative gravity theories, and gravitational wave astronomy. Recent work includes

• applying machine learning to neutron star universal relations
• analyzing black hole shadows as tests of the no-hair theorem
• developing surrogate models for gravitational waveforms

He has contributed to international collaborations like the Laser Interferometer Space Antenna (LISA) mission planning and has expertise in spacetime metrics, QPO analysis, and neutron star structure. Peer review activities centered on general relativity and celestial mechanics.