Electromagnetic Counterparts from Tilted Magnetized Binary Neutron-Stars Mergers

ORAL

Abstract

Recent studies have demonstrated that the interaction of magnetospheres in binary neutron star systems can radiate strongly electromagnetically [1,2]. We study here a broader set of configurations accounting for tilted/misaligned dipoles in coalescing binaries and analyze the resulting Poynting flux and its correlation to the dynamics. In particular, the misalignment of the dipoles results in a very dynamic system with magnetic reconnections, sheer layers, and current sheets. The electromagnetic radiation displays a distinctive pulsating behaviour tied to the orbital dynamics and stellar dipole orientations and the overall power of this radiation. \\ ~[1] C.~Palenzuela, L.~Lehner, M.~Ponce, S.~L.~Liebling, M.~Anderson, D.~Neilsen and P.~Motl, Phys.\ Rev.\ Lett.\ {\bf 111}, 061105 (2013) \\ ~[2] C.~Palenzuela, L.~Lehner, S.~L.~Liebling, M.~Ponce, M.~Anderson, D.~Neilsen and P.~Motl, Phys.\ Rev.\ D {\bf 88}, 043011 (2013)

*This work was supported by the NSF grants PHY-0969827 (LIU), PHY-0969811 (BYU), NASA's ATP grant NNX13AH01G, and NSERC through a Discovery Grant.

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Authors

  • Marcelo Ponce

    • University of Guelph
    • Department of Physics, University of Guelph

  • Carlos Palenzuela

    • Canadian Institute for Theoretical Astrophysics
    • CITA

  • Patrick M. Motl

    • Department of Science, Indiana University Kokomo

  • Matthew Anderson

    • Pervasive Technology Institute, Indiana University

  • Eric W. Hirschmann

    • Department of Physics and Astronomy, Brigham Young University

  • Luis Lehner

    • Perimeter Institute for Theoretical Physics
    • Perimeter Institute

  • Steven Liebling

    • Department of Physics, Long Island University
    • Long Island University

  • David Neilsen

    • Department of Physics and Astronomy, Brigham Young University
    • Brigham Young University