Θέμα: Pulsars with PINNs
Ομιλητής: Δρ. Ι. Κοντόπουλος, Κ.Ε.Α.Ε.Μ., Ακαδημία Αθηνών
Ημερομηνία: Παρασκευή 28-11-2025, 12:15 μ.μ.
Τόπος: Εργαστήριο Αστρονομίας, ΑΠΘ
Περίληψη:
Pulsars, the spinning remnants of massive stars, act as cosmic
lighthouses, emitting beams of radiation that reveal the extreme
physics of neutron stars. Yet, our understanding of pulsar radiation
and variability remains incomplete. A reference ideal force-free
magnetospheric solution for an oblique rotator is still lacking, and
the most recent global Particle-in-Cell (PIC) simulations have raised
several questions whose physical origin we do not understand.
In our talk, we will present our efforts to obtain the reference ideal
force-free magnetospheric solution with an independent novel
numerical method, namely Physics Inspired Neural Networks
(PINNs). We will present our first results on the morphology of the
magnetosphere, on the reconnection along the equatorial current
sheet, and on the emitted high-energy radiation. We will show where
and why our results differ from the state-of-the-art global PIC
solutions, and we will discuss the potential of PINNs for astrophysics.
