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Title: Minidisk Accretion onto Spinning Black Hole Binaries: Quasi-periodicities and Outflows

Abstract

We perform a full 3D general relativistic magnetohydrodynamical (GRMHD) simulation of an equal-mass, spinning, binary black hole approaching merger, surrounded by a circumbinary disk and with a minidisk around each black hole. For this purpose, we evolve the ideal GRMHD equations on top of an approximated spacetime for the binary that is valid in every position of space, including the black hole horizons, during the inspiral regime. We use relaxed initial data for the circumbinary disk from a previous long-term simulation, where the accretion is dominated by a m = 1 overdensity called the lump. We compare our new spinning simulation with a previous non-spinning run, studying how spin influences the minidisk properties. We analyze the accretion from the inner edge of the lump to the black hole, focusing on the angular momentum budget of the fluid around the minidisks. We find that minidisks in the spinning case have more mass over a cycle than the non-spinning case. However, in both cases we find that most of the mass received by the black holes is delivered by the direct plunging of material from the lump. We also analyze the morphology and variability of the electromagnetic fluxes, and we find theymore » share the same periodicities of the accretion rate. In the spinning case, we find that the outflows are stronger than the non-spinning case. Our results will be useful to understand and produce realistic synthetic light curves and spectra, which can be used in future observations.« less

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]
+ Show Author Affiliations
  1. Instituto Argentino de Radioastronomía (IAR), Buenos Aires (Argentina); Rochester Inst. of Technology, Rochester, NY (United States)
  2. Rochester Inst. of Technology, Rochester, NY (United States)
  3. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  4. Univ. of Cambridge (United Kingdom)
  5. Johns Hopkins Univ., Baltimore, MD (United States)
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
1871478
Report Number(s):
LA-UR-21-28719
Journal ID: ISSN 0004-637X; TRN: US2306754
Grant/Contract Number:  
89233218CNA000001; AST-2009330; AST-754 1028087; AST-1516150; PHY-1707946; AST-1028087; AST-1515982; OAC-1515969; AST-1028111; PHY-1707826; AST-2009260; PHY-0722703; PHY-1229173; PHY-1726215
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal
Additional Journal Information:
Journal Volume: 928; Journal Issue: 2; Journal ID: ISSN 0004-637X
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; supermassive black holes; jets; compact objects; magnetohydrodynamical simulations

Citation Formats

Combi, Luciano, Lopez Armengol, Federico G., Campanelli, Manuela, Noble, Scott C., Avara, Mark, Krolik, Julian H., and Bowen, Dennis. Minidisk Accretion onto Spinning Black Hole Binaries: Quasi-periodicities and Outflows. United States: N. p., 2022. Web. doi:10.3847/1538-4357/ac532a.
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Combi, Luciano, Lopez Armengol, Federico G., Campanelli, Manuela, Noble, Scott C., Avara, Mark, Krolik, Julian H., & Bowen, Dennis. Minidisk Accretion onto Spinning Black Hole Binaries: Quasi-periodicities and Outflows. United States. https://doi.org/10.3847/1538-4357/ac532a
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Combi, Luciano, Lopez Armengol, Federico G., Campanelli, Manuela, Noble, Scott C., Avara, Mark, Krolik, Julian H., and Bowen, Dennis. Thu . "Minidisk Accretion onto Spinning Black Hole Binaries: Quasi-periodicities and Outflows". United States. https://doi.org/10.3847/1538-4357/ac532a. https://www.osti.gov/servlets/purl/1871478.
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@article{osti_1871478,
title = {Minidisk Accretion onto Spinning Black Hole Binaries: Quasi-periodicities and Outflows},
author = {Combi, Luciano and Lopez Armengol, Federico G. and Campanelli, Manuela and Noble, Scott C. and Avara, Mark and Krolik, Julian H. and Bowen, Dennis},
abstractNote = {We perform a full 3D general relativistic magnetohydrodynamical (GRMHD) simulation of an equal-mass, spinning, binary black hole approaching merger, surrounded by a circumbinary disk and with a minidisk around each black hole. For this purpose, we evolve the ideal GRMHD equations on top of an approximated spacetime for the binary that is valid in every position of space, including the black hole horizons, during the inspiral regime. We use relaxed initial data for the circumbinary disk from a previous long-term simulation, where the accretion is dominated by a m = 1 overdensity called the lump. We compare our new spinning simulation with a previous non-spinning run, studying how spin influences the minidisk properties. We analyze the accretion from the inner edge of the lump to the black hole, focusing on the angular momentum budget of the fluid around the minidisks. We find that minidisks in the spinning case have more mass over a cycle than the non-spinning case. However, in both cases we find that most of the mass received by the black holes is delivered by the direct plunging of material from the lump. We also analyze the morphology and variability of the electromagnetic fluxes, and we find they share the same periodicities of the accretion rate. In the spinning case, we find that the outflows are stronger than the non-spinning case. Our results will be useful to understand and produce realistic synthetic light curves and spectra, which can be used in future observations.},
doi = {10.3847/1538-4357/ac532a},
journal = {The Astrophysical Journal},
number = 2,
volume = 928,
place = {United States},
year = {Thu Apr 07 00:00:00 EDT 2022},
month = {Thu Apr 07 00:00:00 EDT 2022}
}
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  • DOI: 10.1088/0004-637X/785/2/115

Binary black hole accretion during inspiral and merger
journal, December 2014

  • Farris, Brian D.; Duffell, Paul; MacFadyen, Andrew I.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 447, Issue 1
  • DOI: 10.1093/mnrasl/slu184

Approximate black hole binary spacetime via asymptotic matching
journal, April 2014

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