Radiation hydrodynamics simulations of wide-angle outflows from super-critical accretion disks around black holes

	Radiation hydrodynamics simulations of wide-angle outflows from super-critical accretion disks around black holes
	Hashizume, Katsuya 1; Ohsuga, Ken 2,3; Kawashima, Tomohisa 2,4; Tanaka, Masaomi 2,3
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2015-08-01
卷号	67 期号:4 页码:1
关键词	accretion black hole physics ISM: jets and outflows X-rays: galaxies accretion disks
英文摘要	By performing two-dimensional radiation hydrodynamics simulations with a large computational domain of 5000 times the Schwarzschild radius, we revealed that wide-angle outflow is launched via the radiation force from the super-critical accretion flows around black holes. The angular size of the outflow, where the radial velocity (v(r)) exceeds the escape velocity (v(esc)), increases with an increase of the distance from the black hole. As a result, the mass is blown away with speed of v(r) > v(esc) in all directions except for in the vicinity of the equatorial plane, theta = 0 degrees-85 degrees, where theta is the polar angle. The mass ejected from the outer boundary per unit time by the outflow is larger than the mass accretion rate onto the black hole, similar to 150 L-Edd/c(2), where L-Edd and c are the Eddington luminosity and the speed of light. The kinetic power of such wide-angle high-velocity outflow is comparable to the photon luminosity and is a few times larger than the Eddington luminosity. This corresponds to similar to 10(39)-10(40) erg s(-1) for the stellar mass black holes. Our model is consistent with the observations of shock excited bubbles observed in some ultra-luminous X-ray sources (ULXs), supporting a hypothesis that ULXs are powered by the super-critical accretion onto stellar mass black holes.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SUPER-EDDINGTON ACCRETION ; X-RAY SOURCES ; MAGNETOHYDRODYNAMIC SIMULATIONS ; M1 CLOSURE ; MODEL ; FLOW ; MICROQUASAR ; VARIABILITY ; STATE ; CODE
收录类别	SCI
语种	英语
WOS记录号	WOS:000359649800002
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/28237]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Grad Univ Adv Study SOKENDAI, Sch Phys Sci, Kanagawa 2400193, Japan 2.Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan 3.Grad Univ Adv Study SOKENDAI, Sch Phys Sci, Kanagawa 2400193, Japan 4.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Hashizume, Katsuya,Ohsuga, Ken,Kawashima, Tomohisa,et al. Radiation hydrodynamics simulations of wide-angle outflows from super-critical accretion disks around black holes[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2015,67(4):1.
APA	Hashizume, Katsuya,Ohsuga, Ken,Kawashima, Tomohisa,&Tanaka, Masaomi.(2015).Radiation hydrodynamics simulations of wide-angle outflows from super-critical accretion disks around black holes.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,67(4),1.
MLA	Hashizume, Katsuya,et al."Radiation hydrodynamics simulations of wide-angle outflows from super-critical accretion disks around black holes".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 67.4(2015):1.