Mar 26–28, 2025
Perimeter Institute for Theoretical Physics
America/Toronto timezone

Magnetic field effects in binary neutron star mergers: insights from GRMHD simulations

Mar 27, 2025, 10:15 a.m.
15m
PI/4-405 - Bob Room (Perimeter Institute for Theoretical Physics)

PI/4-405 - Bob Room

Perimeter Institute for Theoretical Physics

60
Contributed Talk

Speaker

Dr Eduardo Gutierrez (The Pennsylvania State University)

Description

Magnetic fields play a key role in shaping the dynamics and observational phenomenology of binary neutron star (BNS) mergers. In this talk, I will present results from general relativistic magnetohydrodynamic (GRMHD) simulations performed with the code GR-Athena++, exploring how different initial magnetic field configurations affect the evolution of BNS mergers. We investigated magnetic field amplification, primarily driven by the Kelvin-Helmholtz instability, the post-merger remnant and disk structure, and the characteristics of the ejected material. I will discuss how these processes impact potential electromagnetic counterparts and their detectability. Finally, I will highlight recent advancements in our numerical methods that improve the modeling of magnetized neutron star mergers, paving the way for more accurate predictions of multimessenger signals from these extreme events.

Presenter's Name Eduardo Gutierrez
Presenter's Email Address [email protected]
Keywords neutron stars, compact objects, plasma physics, numerical relativity, multimessenger astrophysics
Recording Permission YES
Virtual Audience Permission YES
Photography Permission YES

Primary authors

Dr Eduardo Gutierrez (The Pennsylvania State University) Dr William Cook (Friedrich Schiller University Jena)

Co-authors

Prof. David Radice (The Pennsylvania State University) Prof. Sebastiano Bernuzzi (Friedrich Schiller University Jena) Dr Boris Daszuta (Friedrich Schiller University Jena) Mr Jacob Fields (The Pennsylvania State University) Dr Peter Hammond (University of New Hampshire)

Presentation materials

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External references