Neutron stars serve as unique natural laboratories for exploring physics under extreme
conditions. These dense stellar remnants exhibit exceptionally strong magnetic fields, featuring
complex origins and internal structures that continue to challenge our understanding, despite
decades of theoretical and observational efforts. Understanding the internal magnetic field
topology and its equilibrium configurations is crucial for determining the structure and long-term
stability of neutron stars. In this talk, I will discuss how general relativistic magnetohydrodynamic
(GRMHD) simulations are employed to explore key questions: Can stable magnetic equilibria
exist inside neutron stars? What physical processes govern the approach to equilibrium? And
how does turbulence affect the evolution of the magnetic field?
Dr. Raj Kishor Joshi has been a postdoctoral researcher at the Nicolaus Copernicus Astronomical Center in Poland since November 2024. Prior to this, he held a postdoctoral position at the IIT Indore from April to October 2024. He obtained his Ph.D. from ARIES in March 2024. His research focuses on developing numerical simulation codes for astrophysical fluid dynamics to investigate accretion and outflows around compact objects. Currently, his work involves GRMHD simulations aimed at modeling magnetic field configurations in magnetars.