Global Radiation-magnetohydrodynamics Simulations of Black-hole Outflows

2014 Fiscal Year Final Research Report

• Project/Area Number: 24740127
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: OHSUGA Ken 国立天文台, 理論研究部, 助教 (90386508)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ブラックホール / 降着円盤 / ジェット / 数値計算

Outline of Final Research Achievements

We performed radiation-magnetohydrodynamics simulations of outflows launching from the black-hole accretion disks. It is found that the outflow fragments into many gas clouds due to the Rayleigh-Taylor instability. Also, we were successful in developing a novel numerical method for relativistic radiation-magnetohydrodynamics. By perfuming the simulations in the vicinity of the black hole with using the new code, we revealed that the jet velocity is reduced by the radiation drag.

Free Research Field

宇宙物理学