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- W3086585892 abstract "Numerical-relativity simulations are essential for studying the last stages of the binary neutron star coalescence. Unfortunately, for stable simulations there is the need to add an artificial low-density atmosphere. Here we discuss a new framework in which we can effectively set the density surrounding the neutron stars to zero to ensure a more accurate simulation. We test our method with a number of single star test cases and for an equal-mass binary neutron star simulation. While the bulk motion of the system is not influenced, and hence there is no improvement with respect to the emitted gravitational-wave signal, we find that the new approach is superior with respect to mass conservation and it allows a much better tracking of outward moving material. This will allow a more accurate simulation of the ejected material and supports the interpretation of present and future multimessenger observations with more accurate numerical-relativity simulations." @default.
- W3086585892 created "2020-09-21" @default.
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- W3086585892 date "2020-11-06" @default.
- W3086585892 modified "2023-10-18" @default.
- W3086585892 title "Increasing the accuracy of binary neutron star simulations with an improved vacuum treatment" @default.
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- W3086585892 doi "https://doi.org/10.1103/physrevd.102.104014" @default.
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