Journal
ASTROPHYSICAL JOURNAL
Volume 913, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/abf0af
Keywords
-
Categories
Funding
- National Science Foundation (NSF) [AST-2009330, AST-1028087, AST-1516150, PHY-1707946]
- NASA TCAN [80NSSC18K1488, PHY-1607520, PHY-1305730]
- CONICET fellowship
- RIT's Frontier of Gravitational Wave Astronomy center
- RIT's Frontiers in Gravitational Wave Astrophysics Postdoctoral Fellowship
- NASA
- NSF [AST-1028087, AST-1516150, PHY-1707946, OAC-1550436, PHYS-1707826, AST-AST-2009260, OAC-1811228, OAC-1516125, PHY20010, AST20021, PHY-0722703, PHY-1229173, PHY-1726215]
- US Department of Energy through the Los Alamos National Laboratory
- National Nuclear Security Administration of U.S. Department of Energy [89233218CNA000001]
- Exascale Computing Project, a collaborative effort of the U.S. Department of Energy (DOE) Office of Science [17-SC-20-SC]
- U.S. Department of Energy [DE-AC05-00OR22725]
- JSPS KAKENHI [JP16K05347, JP17H06358]
- [AST-1515982]
- [OAC-1515969]
Ask authors/readers for more resources
This study simulated the disk structure around binary black holes, and found that aligned spins reduced the mass accretion rate while counter-aligned spins increased it, after considering the spin parameters of black holes.
Supermassive black hole binaries are likely to accrete interstellar gas through a circumbinary disk. Shortly before merger, the inner portions of this circumbinary disk are subject to general relativistic effects. To study this regime, we approximate the spacetime metric of close orbiting black holes by superimposing two boosted Kerr-Schild terms. After demonstrating the quality of this approximation, we carry out very long-term general relativistic magnetohydrodynamic simulations of the circumbinary disk. We consider black holes with spin dimensionless parameters of magnitude 0.9, in one simulation parallel to the orbital angular momentum of the binary, but in another anti-parallel. These are contrasted with spinless simulations. We find that, for a fixed surface mass density in the inner circumbinary disk, aligned spins of this magnitude approximately reduce the mass accretion rate by 14% and counter-aligned spins increase it by 45%, leaving many other disk properties unchanged.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available