General-relativistic simulations of binary black hole-neutron stars: Precursor electromagnetic signals

Vasileios Paschalidis; Zachariah B. Etienne; Stuart L. Shapiro

doi:10.1103/PhysRevD.88.021504

General-relativistic simulations of binary black hole-neutron stars: Precursor electromagnetic signals

Vasileios Paschalidis
, Zachariah B. Etienne
, Stuart L. Shapiro

Research output: Contribution to journal › Article › peer-review

79 Scopus citations

Abstract

We perform the first general relativistic force-free simulations of neutron star magnetospheres in orbit about spinning and nonspinning black holes. We find promising precursor electromagnetic emission: typical Poynting luminosities at, e.g., an orbital separation of r=6.6R_NS are L _EM∼6×1042(B_NS,p/1013 G) 2(M_NS/1.4M) 2 erg/s. The Poynting flux peaks within a broad beam of ∼40 in the azimuthal direction and within ∼60 from the orbital plane, establishing a possible lighthouse effect. Our calculations, though preliminary, preview more detailed simulations of these systems that we plan to perform in the future.

Original language	English (US)
Article number	021504
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	88
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevD.88.021504
State	Published - Jul 9 2013
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.88.021504

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title = "General-relativistic simulations of binary black hole-neutron stars: Precursor electromagnetic signals",

abstract = "We perform the first general relativistic force-free simulations of neutron star magnetospheres in orbit about spinning and nonspinning black holes. We find promising precursor electromagnetic emission: typical Poynting luminosities at, e.g., an orbital separation of r=6.6RNS are L EM∼6×1042(BNS,p/1013 G) 2(MNS/1.4M) 2 erg/s. The Poynting flux peaks within a broad beam of ∼40 in the azimuthal direction and within ∼60 from the orbital plane, establishing a possible lighthouse effect. Our calculations, though preliminary, preview more detailed simulations of these systems that we plan to perform in the future.",

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AB - We perform the first general relativistic force-free simulations of neutron star magnetospheres in orbit about spinning and nonspinning black holes. We find promising precursor electromagnetic emission: typical Poynting luminosities at, e.g., an orbital separation of r=6.6RNS are L EM∼6×1042(BNS,p/1013 G) 2(MNS/1.4M) 2 erg/s. The Poynting flux peaks within a broad beam of ∼40 in the azimuthal direction and within ∼60 from the orbital plane, establishing a possible lighthouse effect. Our calculations, though preliminary, preview more detailed simulations of these systems that we plan to perform in the future.

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General-relativistic simulations of binary black hole-neutron stars: Precursor electromagnetic signals

Abstract

ASJC Scopus subject areas

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