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Title: General-relativistic Resistive Magnetohydrodynamics with Robust Primitive-variable Recovery for Accretion Disk Simulations

Abstract

Recent advances in black hole astrophysics, particularly the first visual evidence of a supermassive black holeat the center of the galaxy M87 by the Event Horizon Telescope (EHT), and the detection of an orbiting “hot spot”nearby the event horizon of Sgr A* in the Galactic center by the Gravity Collaboration, require the developmentof novel numerical methods to understand the underlying plasma microphysics. Non-thermal emission related tosuch hot spots is conjectured to originate from plasmoids that form due to magnetic reconnection in thin currentlayers in the innermost accretion zone. Resistivity plays a crucial role in current sheet formation, magneticreconnection, and plasmoid growth in black hole accretion disks and jets. We included resistivity in the three-dimensional general-relativistic magnetohydrodynamics (GRMHD) codeBHACand present the implementationof an Implicit-Explicit scheme to treat the stiff resistive source terms of the GRMHD equations. The algorithmis tested in combination with adaptive mesh refinement to resolve the resistive scales and a constrained transportmethod to keep the magnetic field solenoidal. Several novel methods for primitive variable recovery, a key part inrelativistic magnetohydrodynamics codes, are presented and compared for accuracy, robustness, and efficiency.We propose a new inversion strategy that allows for resistive-GRMHD simulations of low gas-to-magneticpressure ratio and highly magnetized regimes asmore » applicable for black hole accretion disks, jets, and neutron starmagnetospheres. We apply the new scheme to study the effect of resistivity on accreting black holes, accountingfor dissipative effects as reconnection« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [3];  [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]
+ Show Author Affiliations
  1. Goethe Univ., Frankfurt (Germany); Katholieke Univ. Leuven, Heverlee (Belgium)
  2. Goethe Univ., Frankfurt (Germany) ; Univ. of Amsterdam (Netherlands)
  3. Goethe Univ., Frankfurt (Germany)
  4. Katholieke Univ. Leuven, Heverlee (Belgium); Centrum Wiskunde & Informatica, Amsterdam (Netherlands)
  5. Katholieke Univ. Leuven, Heverlee (Belgium)
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1593850
Grant/Contract Number:  
SC0009924
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Supplement Series (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal. Supplement Series (Online); Journal Volume: 244; Journal Issue: 1; Journal ID: ISSN 1538-4365
Publisher:
American Astronomical Society/IOP
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; black hole physics; accretion, accretion disks; (magnetohydrodynamics:) MHD; plasmas; relativity; methods: numerical

Citation Formats

Ripperda, B., Bacchini, F., Porth, O., Most, E. R., Olivares, H., Nathanail, A., Rezzolla, L., Teunissen, J., and Keppens, R. General-relativistic Resistive Magnetohydrodynamics with Robust Primitive-variable Recovery for Accretion Disk Simulations. United States: N. p., 2019. Web. doi:10.3847/1538-4365/ab3922.
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Ripperda, B., Bacchini, F., Porth, O., Most, E. R., Olivares, H., Nathanail, A., Rezzolla, L., Teunissen, J., & Keppens, R. General-relativistic Resistive Magnetohydrodynamics with Robust Primitive-variable Recovery for Accretion Disk Simulations. United States. https://doi.org/10.3847/1538-4365/ab3922
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Ripperda, B., Bacchini, F., Porth, O., Most, E. R., Olivares, H., Nathanail, A., Rezzolla, L., Teunissen, J., and Keppens, R. Mon . "General-relativistic Resistive Magnetohydrodynamics with Robust Primitive-variable Recovery for Accretion Disk Simulations". United States. https://doi.org/10.3847/1538-4365/ab3922. https://www.osti.gov/servlets/purl/1593850.
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@article{osti_1593850,
title = {General-relativistic Resistive Magnetohydrodynamics with Robust Primitive-variable Recovery for Accretion Disk Simulations},
author = {Ripperda, B. and Bacchini, F. and Porth, O. and Most, E. R. and Olivares, H. and Nathanail, A. and Rezzolla, L. and Teunissen, J. and Keppens, R.},
abstractNote = {Recent advances in black hole astrophysics, particularly the first visual evidence of a supermassive black holeat the center of the galaxy M87 by the Event Horizon Telescope (EHT), and the detection of an orbiting “hot spot”nearby the event horizon of Sgr A* in the Galactic center by the Gravity Collaboration, require the developmentof novel numerical methods to understand the underlying plasma microphysics. Non-thermal emission related tosuch hot spots is conjectured to originate from plasmoids that form due to magnetic reconnection in thin currentlayers in the innermost accretion zone. Resistivity plays a crucial role in current sheet formation, magneticreconnection, and plasmoid growth in black hole accretion disks and jets. We included resistivity in the three-dimensional general-relativistic magnetohydrodynamics (GRMHD) codeBHACand present the implementationof an Implicit-Explicit scheme to treat the stiff resistive source terms of the GRMHD equations. The algorithmis tested in combination with adaptive mesh refinement to resolve the resistive scales and a constrained transportmethod to keep the magnetic field solenoidal. Several novel methods for primitive variable recovery, a key part inrelativistic magnetohydrodynamics codes, are presented and compared for accuracy, robustness, and efficiency.We propose a new inversion strategy that allows for resistive-GRMHD simulations of low gas-to-magneticpressure ratio and highly magnetized regimes as applicable for black hole accretion disks, jets, and neutron starmagnetospheres. We apply the new scheme to study the effect of resistivity on accreting black holes, accountingfor dissipative effects as reconnection},
doi = {10.3847/1538-4365/ab3922},
journal = {The Astrophysical Journal. Supplement Series (Online)},
number = 1,
volume = 244,
place = {United States},
year = {2019},
month = {9}
}
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https://doi.org/10.3847/1538-4365/ab3922
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A multidimensional grid-adaptive relativistic magnetofluid code
text, January 2008

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text, January 2008

Implementation of a simplified approach to radiative transfer in general relativity
text, January 2013

A Chandra/HETGS Census of X-ray Variability From Sgr A* During 2012
text, January 2013

Linking electromagnetic and gravitational radiation in coalescing binary neutron stars
text, January 2013

An 8 hour characteristic time-scale in submillimetre light curves of Sagittarius A*
text, January 2013

MPI-AMRVAC for Solar and Astrophysics
text, January 2014

General-relativistic resistive-magnetohydrodynamic simulations of binary neutron stars
text, January 2015

rHARM: Accretion and Ejection in Resistive GR-MHD
text, January 2016

Gravitational collapse to a Kerr-Newman black hole
text, January 2017

Mass Ejection from the Remnant of a Binary Neutron Star Merger: Viscous-Radiation Hydrodynamics Study
text, January 2017

Recovery schemes for primitive variables in general-relativistic magnetohydrodynamics
text, January 2017

Linear Wave Propagation for Resistive Relativistic Magnetohydrodynamics
text, January 2018

The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project
text, January 2019

First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
text, January 2019

First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
text, January 2019

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