TY - JOUR

T1 - Constraining the lensing of binary neutron stars from their stochastic background

AU - Buscicchio, Riccardo

AU - Moore, Chris

AU - Pratten, Geraint

AU - Vecchio, Alberto

AU - Schmidt, Patricia

PY - 2020/9/28

Y1 - 2020/9/28

N2 - Gravitational wave (GW) transients from binary neutron star (BNS) coalescences can, in principle, be subject to gravitational lensing thereby increasing the amplitude and signal-to-noise ratio. We estimate the rate of lensed BNS events resolvable by LIGO and Virgo and find that it is constrained by the current nondetection of a stochastic GW background. Following closely the formalism we developed previously [R. Buscicchio et al., Phys. Rev. Lett. 125, 141102 (2020)., 10.1103/PhysRevLett.125.141102] in the context of binary black hole lensing, we show that at current sensitivities the fraction of BNS coalescences with lensing magnifications μ >1.02 is less than ∼7 ×10-8 and therefore such events should not be expected in the near future. We also make predictions for projected future sensitivities.

AB - Gravitational wave (GW) transients from binary neutron star (BNS) coalescences can, in principle, be subject to gravitational lensing thereby increasing the amplitude and signal-to-noise ratio. We estimate the rate of lensed BNS events resolvable by LIGO and Virgo and find that it is constrained by the current nondetection of a stochastic GW background. Following closely the formalism we developed previously [R. Buscicchio et al., Phys. Rev. Lett. 125, 141102 (2020)., 10.1103/PhysRevLett.125.141102] in the context of binary black hole lensing, we show that at current sensitivities the fraction of BNS coalescences with lensing magnifications μ >1.02 is less than ∼7 ×10-8 and therefore such events should not be expected in the near future. We also make predictions for projected future sensitivities.

U2 - 10.1103/PhysRevD.102.081501

DO - 10.1103/PhysRevD.102.081501

M3 - Article

SN - 1550-7998

VL - 102

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

ER -