Numerical Simulation of Hot Accretion Flow around Bondi Radius

@article{65950,
   author = {Mosallanezhad, Amin and Bu, DeandFu and Čemeljić, Miljenko and Zeraatgari, Fatemeh Zahra and Hai, Yang and Mei, Liquan},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {1},
   doi = {http://dx.doi.org/10.3847/1538-4357/ac9379},
   keywords = {advection-dominated accreation;angular momentum material;black holes;thermal conduction;disks;gas;instability;density;models;origin},
   language = {eng},
   issn = {0004-637X},
   journal = {Astrophysical Journal},
   title = {Numerical Simulation of Hot Accretion Flow around Bondi Radius},
   url = {https://iopscience.iop.org/article/10.3847/1538-4357/ac9379},
   volume = {939},
   year = {2022}
}

TY  - JOUR
ID  - 65950
AU  - Mosallanezhad, Amin - Bu, De-Fu - Čemeljić, Miljenko - Zeraatgari, Fatemeh Zahra - Hai, Yang - Mei, Liquan
PY  - 2022
TI  - Numerical Simulation of Hot Accretion Flow around Bondi Radius
JF  - Astrophysical Journal
VL  - 939
IS  - 1
SP  - "12-1"-"12-12"
EP  - "12-1"-"12-12"
SN  - 0004637X
KW  - advection-dominated accreation;angular momentum material;black holes;thermal conduction;disks;gas;instability;density;models;origin
UR  - https://iopscience.iop.org/article/10.3847/1538-4357/ac9379
N2  - Previous numerical simulations have shown that strong winds can be produced in the hot accretion flows around black holes. Most of those studies focus only on the region close to the central black hole; therefore it is unclear whether the wind production stops at large radii around Bondi radius. Bu et al. (2016) studied the hot accretion flow around the Bondi radius in the presence of nuclear star gravity. They find that, when the nuclear stars gravity is important-comparable to the black hole gravity, winds cannot be produced around the Bondi radius. However, for some galaxies, the nuclear stars gravity around Bondi radius may not be strong. In this case, whether winds can be produced around Bondi radius is not clear. We study the hot accretion flow around Bondi radius with and without thermal conduction by performing hydrodynamical simulations. We use the virtual particles trajectory method to study whether winds exist based on the simulation data. Our numerical results show that, in the absence of nuclear stars gravity, winds can be produced around Bondi radius, which causes the mass inflow rate to decrease inwards. We confirm the results of Yuan et al. (2012), which indicate this is due to the mass loss of gas via wind rather than convectional motions.
ER  - 

MOSALLANEZHAD, Amin, De-Fu BU, Miljenko ČEMELJI$\backslash$'C, Fatemeh Zahra ZERAATGARI, Yang HAI a Liquan MEI. Numerical Simulation of Hot Accretion Flow around Bondi Radius. \textit{Astrophysical Journal}. GB - Spojené království Velké Británie a, 2022, roč.~939, č.~1, s.~''12-1''-''12-12'', 12 s. ISSN~0004-637X. Dostupné z: https://dx.doi.org/10.3847/1538-4357/ac9379.