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- W3180366969 abstract "In the Double Pulsar, the Lense-Thirring periastron precession $dotomega^mathrm{LT}$ should be measured by the end of this decade. The analyses recently appeared in the literature rely upon a formula for $dotomega^mathrm{LT,,A}$ induced by the spin angular momentum ${boldsymbol{S}}^mathrm{A}$ of A valid if the orbital angular momentum $boldsymbol{L}$ and ${boldsymbol{S}}^mathrm{A}$ are aligned, and neglecting $dotomega^mathrm{LT,,B}$ because of the smallness of ${boldsymbol{S}}^mathrm{B}$. The impact on $dotomega^mathrm{LT,,A}$ of the departures of the ${boldsymbol{S}}^mathrm{A}$-$boldsymbol{L}$ geometry from the ideal alignment is calculated. With the current upper bound on the misalignment angle $delta_mathrm{A}$ between them, the angles $lambda_mathrm{A},,eta_mathrm{A}$ of ${boldsymbol{S}}^mathrm{A}$ are constrained within $85^circ lesssim lambda_mathrm{A}lesssim 92^circ,, 266^circ lesssim eta_mathrm{A} lesssim 274^circ$. In units of $dotomega^mathrm{GR}=16.89^circ,mathrm{yr}^{-1}$, a range variation as little as $Deltadotomega^mathrm{LT,,A}doteqdotomega^mathrm{LT,,A}_mathrm{max} - dotomega^mathrm{LT,,A}_mathrm{min} = 8times 10^{-8},omega^mathrm{GR}$ is implied. The experimental uncertainty $sigma_{dotomega_mathrm{obs}}$ in measuring the periastron rate with the SKA 1-mid telescope should become smaller by 2028-2030. Then, the spatial orientation of ${boldsymbol{S}}^mathrm{B}$ is constrained from the existing bounds on the misalignment angle $delta_mathrm{B}$, and $dotomega^mathrm{LT,,B}simeq 2times 10^{-7},dotomega^mathrm{GR}$ is correspondingly calculated. The error $sigma_{dotomega_mathrm{obs}}$ should become smaller at the transition from MeerKAT+ facility to SKA 1-mid around 2025. (Abridged)" @default.
- W3180366969 created "2021-07-19" @default.
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- W3180366969 date "2021-07-26" @default.
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- W3180366969 title "The impact of the spin–orbit misalignment and of the spin of B on the Lense–Thirring orbital precessions of the double pulsar PSR J0737–3039A/B" @default.
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- W3180366969 doi "https://doi.org/10.1093/mnras/stab2152" @default.
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