HARM3D+NUC: A New Method for Simulating the Post-merger Phase of Binary Neutron Star Mergers with GRMHD, Tabulated EOS, and Neutrino Leakage

被引：16

作者：

Murguia-Berthier, Ariadna ^{[1
,2
]}

Noble, Scott C. ^{[3
]}

Roberts, Luke F. ^{[4
]}

Ramirez-Ruiz, Enrico ^{[1
,2
]}

Werneck, Leonardo R. ^{[5
]}

Kolacki, Michael ^{[6
,7
]}

Etienne, Zachariah B. ^{[5
,8
]}

Avara, Mark ^{[9
]}

Campanelli, Manuela ^{[7
,9
,10
]}

Ciolfi, Riccardo ^{[11
,12
]}

Cipolletta, Federico ^{[13
]}

Drachler, Brendan ^{[7
,9
]}

Ennoggi, Lorenzo ^{[9
]}

Faber, Joshua ^{[7
,9
,10
]}

Fiacco, Grace ^{[7
,9
]}

Giacomazzo, Bruno ^{[14
,15
,16
]}

Gupte, Tanmayee ^{[7
,9
]}

Ha, Trung ^{[9
]}

Kelly, Bernard J. ^{[3
,17
,18
]}

Krolik, Julian H. ^{[19
]}

Armengol, Federico G. Lopez ^{[9
]}

Ben Margalit ^{[20
,21
]}

Moon, Tim ^{[9
,10
]}

O'Shaughnessy, Richard ^{[7
,9
,10
]}

Rueda-Becerril, Jesus M. ^{[9
]}

Schnittman, Jeremy ^{[3
]}

Zenati, Yossef ^{[19
]}

Zlochower, Yosef ^{[7
,9
,10
]}

机构：

[1] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[2] Univ Copenhagen, DARK, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

[3] NASA, Gravitat Astrophys Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[4] Michigan State Univ, NSCL, E Lansing, MI 48824 USA

[5] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA

[6] Rochester Inst Technol, Ctr Computat Relat, Rochester, NY 14623 USA

[7] Rochester Inst Technol, Sch Phys & Astron, Rochester, NY 14623 USA

[8] West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA

[9] Rochester Inst Technol, Ctr Computat Relat & Gravitat, 85 Lomb Mem Dr, Rochester, NY 14623 USA

[10] Rochester Inst Technol, Sch Math Sci, Rochester, NY 14623 USA

[11] INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[12] Ist Nazl Fis Nucl, Sez Padova, Via Francesco Marzolo 8, I-35131 Padua, Italy

[13] Leonardo Corp LABS, Via Raffaele Pieragostini 80, I-16149 Genoa, GE, Italy

[14] Univ Milano Bicocca, Dipartimento Fis G Occhialini, Piazza Sci 3, I-20126 Milan, Italy

[15] Ist Nazl Fis Nucl, Sez Milano Bicocca, Piazza Sci 3, I-20126 Milan, Italy

[16] INAF, Osservatorio Astron Brera, Via E Bianchi 46, I-23807 Merate, LC, Italy

[17] Univ Maryland Baltimore Cty, Dept Phys, 1000 Hilltop Circle, Baltimore, MD 21250 USA

[18] NASA, Ctr Res & Explorat Space Sci & Technol, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[19] Johns Hopkins Univ, Phys & Astron Dept, Baltimore, MD 21218 USA

[20] Univ Calif Berkeley, Astron Dept, Berkeley, CA 94720 USA

[21] Univ Calif Berkeley, Theoret Astrophys Ctr, Berkeley, CA 94720 USA

来源：

ASTROPHYSICAL JOURNAL | 2021年 / 919卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

COOLED ACCRETION DISKS; R-PROCESS NUCLEOSYNTHESIS; GAMMA-RAY BURSTS; MASS EJECTION; DRIVEN WINDS; BLACK-HOLES; EVOLUTION; TRANSPORT; MODELS; KILONOVA;

D O I：

10.3847/1538-4357/ac1119

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The 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 gamma-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.

引用

页数：15

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