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GreatMoves

General Relativistic Moving-Mesh Simulations of Neutron-Star Mergers

CoordinatorGSI Helmholtzzentrum für Schwerionenforschung GmbH ; HITS gGmbH
Grant period2018-07-01 - 2023-06-30
Funding bodyEuropean Union
Call numberERC-2017-STG
Grant number759253
IdentifierG:(EU-Grant)759253

Note: In the arising era of gravitational-wave (GW) astronomy the demand for the next-generation of neutron-star (NS) merger models has never been so great. By developing the first relativistic moving-mesh simulations of NS mergers, we will be able to reliably link observables of these spectacular events to fundamental questions of physics. Our approach will allow us to maximize the information that can be obtained from different GW oscillations of the postmerger remnant. In this way we will demonstrate the scientific potential of future postmerger GW detections to unravel unknown properties of NSs and high-density matter. Based on our models we will work out the optimal GW data analysis strategy towards this goal. Employing a revolutionary numerical technique we will be able to achieve an unprecedented resolution of the merger outflow. High-resolution simulations of these ejecta are critical to uncover the detailed conditions for nucleosynthesis, specifically, for the rapid-neutron capture process (r-process). The r-process forges the heaviest elements such as gold and uranium, but its astrophysical production site still has to be clarified. Moreover, the nuclear decays in the expanding outflow power electromagnetic counterparts, which are targets of optical survey telescopes (iPTF, ZTF, BlackGEM, LSST). Our multi-disciplinary approach combines hydrodynamical models, nuclear network calculations and light-curve computations to facilitate the interpretation of future electromagnetic observations within a multi-messenger picture. Linking these observables to the underlying outflow properties is pivotal to unravel the still mysterious origin of heavy elements created by the r-process.
     

Recent Publications

All known publications ...
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Erratum: “Self-consistent 3D Radiative Transfer for Kilonovae: Directional Spectra from Merger Simulations” (2023, ApJL, 954, L41)
The astrophysical journal / Part 2 988(1), L40 () [10.3847/2041-8213/ade719] OpenAccess  Download fulltext Files BibTeX | EndNote: XML, Text | RIS

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Viscous hydrodynamic evolution of neutron star merger accretion disks: A code comparison
Physical review / D 110(2), 023001 () [10.1103/PhysRevD.110.023001] BibTeX | EndNote: XML, Text | RIS

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Self-consistent magnetohydrodynamic simulation of jet launching in a neutron star – white dwarf merger
Astronomy and astrophysics 681, A41 () [10.1051/0004-6361/202347555] OpenAccess  Download fulltext Files BibTeX | EndNote: XML, Text | RIS

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General relativistic moving-mesh hydrodynamic simulations with arepo and applications to neutron star mergers
Monthly notices of the Royal Astronomical Society 528(2), 1906 - 1929 () [10.1093/mnras/stae057] OpenAccess  Download fulltext Files BibTeX | EndNote: XML, Text | RIS

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Thermal behavior as indicator for hyperons in binary neutron star merger remnants
Physical review / D 109(4), 043015 () [10.1103/PhysRevD.109.043015] BibTeX | EndNote: XML, Text | RIS

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Modelling the spectra of the kilonova AT2017gfo – II. Beyond the photospheric epochs
Monthly notices of the Royal Astronomical Society 529(3), 2918 - 2945 () [10.1093/mnras/stad3688] OpenAccess  Download fulltext Files BibTeX | EndNote: XML, Text | RIS

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Hierarchical Bayesian method for constraining the neutron star equation of state with an ensemble of binary neutron star postmerger remnants
Physical review / D 107(4), 043021 () [10.1103/PhysRevD.107.043021] BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Contribution to a conference proceedings/Contribution to a book  ;  ;
Further probing the neutron star equation of state via frequency deviations in universal relations
Proceedings of FAIR next generation scientists - 7th Edition Workshop — PoS(FAIRness2022) - Sissa Medialab Trieste, Italy, 2023. - doi:10.22323/1.419.0032
FAIR next generation scientists - 7th Edition Workshop, FAIRness2022, Paralia Paralia , Greece, 23 May 2022 - 27 May 20222022-05-232022-05-27 Sissa Medialab Trieste, Italy () [10.22323/1.419.0032] OpenAccess  Download fulltext Files BibTeX | EndNote: XML, Text | RIS

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Kilonova emission from realistic neutron star merger simulations
FAIR next generation scientists - 7th Edition Workshop, Paralia PieriaParalia Pieria, Greece, 23 May 2022 - 27 May 20222022-05-232022-05-27 Proceedings of Science / International School for Advanced Studies () [10.22323/1.419.0010] OpenAccess  Download fulltext Files BibTeX | EndNote: XML, Text | RIS

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Neutrinos and their impact on the nucleosynthesis in binary neutron star mergers
FAIR next generation scientists - 7th Edition Workshop, Paralia (PieriaParalia (Pieria, Greece), 23 May 2022 - 27 May 20222022-05-232022-05-27 Proceedings of Science / International School for Advanced Studies () [10.22323/1.419.0061] OpenAccess  Download fulltext Files BibTeX | EndNote: XML, Text | RIS

All known publications ...
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 Record created 2018-02-20, last modified 2023-02-08
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