Research areas: Gravitation, Black holes, Wormholes, Cosmology, Gravitational Lensing, Geodesics, Shadow , Hawking Radiation, Greybody factor, Quasinormal modes, Complexity.
Dr. Övgün's research is focused on understanding and constraining modified gravity theories using various properties of black holes and cosmological evolution. He has contributed to various analysis methods, which are now amongst the most widely used ones for calculating the Hawking radiation, gravitational lensing, and shadow cast of black holes. He has been studying various aspects of general relativity in relation to black hole properties, wormholes, compact stars, Hawking radiation, and cosmological inflation. Dr. Övgün is among World’s Top 2% Scientists in the Stanford University 2020 Releases List.
He try to address a number of interesting questions in physics, such as: -Is it possible that the Big Bang could be replaced with a wormhole at the beginning of time? -Is it possible to create a traversable wormhole? -How can quantum effects be included in black hole/wormhole thermodynamics? -What happens at the edge of a Black Hole or inside a Black hole? -Could Our Universe Be A Hologram? or How Many Dimensions In The Holographic Universe? -Why is the universe expanding at an accelerating rate? -How are Brain Cells Like Little Universes? so on...
-MODIFIED GRAVITY THEORIES: Bumblebee model of gravity, Gauss-Bonnet gravity, f(R) gravity et.c
SUPERVISORSHIPS PhD Supervisor: YASHMITHA KUMARAN Weak Deflection Angle via Gauss-Bonnet Theorem, 2018-Now. MSc Supervisor: FLORA BABAYEVA Shadow Cast of The Schwarzschild-like Black Holes, 2020-2022.
MSc Supervisor: HAMZA SABER ZEBARI Newtonian Cosmology, 2018-2020.
MSc Supervisor: GABRIEL WIRDZELII JOSEPH Cosmology with Varying Physical Constants, 2018-2020.
MSc Co-Supervisor: HUSEYIN KARYAL Geodesics of Black Holes in Bumblebee Gravity Theory, 2018-2020.
MSc Co-Supervisor: İLİM İRFAN ÇİMDİKER (SABANCI UNI.)Black Hole Shadow in Symmergent Gravity, 2021 (Supervisor: Prof. Dr. Durmuş Ali Demir)
BSc Co-Supervisor: CEREN H. BAYRAKTAR (IYTE-TURKEY) Thermodynamics of regular black holes with cosmic strings, European Physical Journal - Plus 2018. (Supervisor: Prof. Dr. Durmuş Ali Demir)
BSc Co-Supervisor: MERT OKYAY (MIAMI UNI.-USA) Nonlinear electrodynamics effects on the black hole shadow, deflection angle, quasinormal modes and greybody factors, Journal of Cosmology and Astroparticle Physics 2022.