2013/03/06 by Jonathan Zrake, Andrew MacFadyen, Andrew I. MacFadyen · 2 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics #Classical mechanics #Computational physics #Dynamo #Gamma-ray bursts and supernovae #Gravitational wave #Kinetic energy #LIGO #Magnetic energy #Magnetic field #Magnetic reconnection #Mechanics #Neutron star #Physics #Pulsars and Gravitational Waves Research #Turbulence #astro-ph.HE
paper · pdf · doi:10.1088/2041-8205/769/2/l29
arxiv created 2013/03/06 · openalex publication_date 2013/05/15 · arxiv updated 2015/06/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The simultaneous detection of electromagnetic and gravitational wave emission from merging neutron star binaries would greatly aid in their discovery and interpretation. By studying turbulent amplification of magnetic fields in local high-resolution simulations of neutron star merger conditions, we demonstrate that magnetar-level (≳ 10 16 G) fields are present throughout the merger duration. We find that the small-scale turbulent dynamo converts 60% of the randomized kinetic energy into magnetic fields on a merger timescale. Since turbulent magnetic energy dissipates through reconnection events that accelerate relativistic electrons, turbulence may facilitate the conversion of orbital kinetic energy into radiation. If 10 −4 of the ∼10 53 erg of orbital kinetic available gets processed through reconnection and creates radiation in the 15–150 keV band, then the fluence at 200 Mpc would be 10 −7 erg cm −2 , potentially rendering most merging neutron stars in the advanced LIGO and Virgo detection volumes detectable by Swift BAT.