HARM3D+NUC: A new method for simulating the post-merger phase of binary neutron star mergers with GRMHD, tabulated EOS and neutrino leakage

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dc.contributor.authorMurguia-Berthier, Ariadna
dc.contributor.authorNoble, Scott C.
dc.contributor.authorRoberts, Luke F.
dc.contributor.authorRamirez-Ruiz, Enrico
dc.contributor.authorWerneck, Leonardo R.
dc.contributor.authorKolacki, Michael
dc.contributor.authorEtienne, Zachariah B.
dc.contributor.authorAvara, Mark
dc.contributor.authorCampanelli, Manuela
dc.contributor.authorCiolfi, Riccardo
dc.contributor.authorCipolletta, Federico
dc.contributor.authorDrachler, Brendan
dc.contributor.authorEnnoggi, Lorenzo
dc.contributor.authorFaber, Joshua
dc.contributor.authorFiacco, Grace
dc.contributor.authorGiacomazzo, Bruno
dc.contributor.authorGupte, Tanmayee
dc.contributor.authorHa, Trung
dc.contributor.authorKelly, Bernard J.
dc.contributor.authorKrolik, Julian H.
dc.contributor.authorArmengol, Federico G. Lopez
dc.contributor.authorMargalit, Ben
dc.contributor.authorMoon, Tim
dc.contributor.authorO'Shaughnessy, Richard
dc.contributor.authorRueda-Becerril, Jesús M.
dc.contributor.authorSchnittman, Jeremy
dc.contributor.authorZenati, Yossef
dc.contributor.authorZlochower, Yosef
dc.date.accessioned2021-06-25T21:20:01Z
dc.date.available2021-06-25T21:20:01Z
dc.date.issued2021-06-09
dc.description.abstractThe first binary neutron star merger has already been detected in gravitational waves. The signal was accompanied by an electromagnetic counterpart including a kilonova component powered by the decay of radioactive nuclei, as well as a short γ-ray burst. In order to understand the radioactively-powered signal, it is necessary to simulate the outflows and their nucleosynthesis from the post-merger disk. Simulating the disk and predicting the composition of the outflows requires general relativistic magnetohydrodynamical (GRMHD) simulations that include a realistic, finite-temperature equation of state (EOS) and self-consistently calculating the impact of neutrinos. In this work, we detail the implementation of a finite-temperature EOS and the treatment of neutrinos in the GRMHD code HARM3D+NUC, based on HARM3D. We include formal tests of both the finite-temperature EOS and the neutrino leakage scheme. We further test the code by showing that, given conditions similar to those of published remnant disks following neutron star mergers, it reproduces both recombination of free nucleons to a neutron-rich composition and excitation of a thermal wind.en_US
dc.description.sponsorshipWe thank the anonymous referee, R. Foley, B. Villaseñor, D. Radice, T. Piran, V. Mewes, D. Siegel, S. Rosswog, A. Janiuk, J. Miller, J. Dolence, M. C. Miller, P. Mösta, N. M. Lloyd-Ronning, A. Batta, G. Koenigsberger, D. Kasen for valuable conversations. A.M-B and E. R-R are supported by the Heising-Simons Foundation, the Danish National Research Foundation (DNRF132), NSF (AST-1911206 and AST-1852393). A.M-B is supported by the UCMEXUSCONACYT Doctoral Fellowship. B.J.K was supported by the NASA Goddard Center for Research and Exploration in Space Science and Technology (CRESST) II Cooperative Agreement under award number 80GSFC17M0002. R.OS was supported by NSF PHY-2012057 and AST-1909534. This work was made possible by the NASA TCAN award TCAN-80NSSC18K1488. Computational resources were provided by the NCSA’s Blue Waters sustained-petascale computing NSF projects OAC-1811228 and OAC-1516125, by the TACC’s Frontera NSF projects PHY20010 and AST20021, and the lux supercomputer at UC Santa Cruz, funded by NSF MRI grant AST 1828315.en_US
dc.description.urihttps://arxiv.org/abs/2106.05356en_US
dc.format.extent18 pagesen_US
dc.genrejournal articles preprintsen_US
dc.identifierdoi:10.13016/m2czds-tuxl
dc.identifier.citationMurguia-Berthier, Ariadna et al.; HARM3D+NUC: A new method for simulating the post-merger phase of binary neutron star mergers with GRMHD, tabulated EOS and neutrino leakage; High Energy Astrophysical Phenomena, 9 June, 2021; https://arxiv.org/abs/2106.05356en_US
dc.identifier.urihttp://hdl.handle.net/11603/21835
dc.language.isoen_USen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Physics Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsAttribution 4.0 International (CC BY 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.titleHARM3D+NUC: A new method for simulating the post-merger phase of binary neutron star mergers with GRMHD, tabulated EOS and neutrino leakageen_US
dc.typeTexten_US

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