Numerical relativity simulations of magnetized black hole—neutron star mergers

Zachariah B. Etienne, Yuk Tung Liu, Vasileios Paschalidis, Stuart L. Shapiro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present new numerical techniques1 we developed for launching the first parameter study of magnetized black hole–neutron star (BHNS) mergers, varying the magnetic fields seeded in the initial neutron star. We found that magnetic fields have a negligible impact on the gravitational waveforms and bulk dynamics of the system during merger, regardless of magnetic field strength or BH spin. In a recent simulation, we seeded the remnant disk from an unmagnetized BHNS merger simulation with large-scale, purely poloidal magnetic fields, which are otherwise absent in the full simulation. The outcome appears to be a viable sGRB central engine.

Original languageEnglish (US)
Title of host publicationOn Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories
EditorsKjell Rosquist, Robert T. Jantzen, Remo Ruffini, Remo Ruffini
PublisherWorld Scientific
Pages991-994
Number of pages4
Edition210699
ISBN (Print)9789814612142
DOIs
StatePublished - 2015
Event13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012 - Stockholm, Sweden
Duration: Jul 1 2015Jul 7 2015

Publication series

NameThe 13th Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proceedings of the MG13 Meeting on General Relativity, 2012
Number210699

Other

Other13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012
CountrySweden
CityStockholm
Period7/1/157/7/15

Keywords

  • Black hole
  • Compact binary mergers
  • Compact objects
  • General relativity
  • Magnetohydrodynamics
  • Neutron star
  • Numerical relativity

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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