| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2015: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2014: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2013: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
|
|---|
| Outline of Final Research Achievements |
Accretion disk is a ubiquitous structure in universe, and it is known that a huge gravitational energy can be released during the gas accretion into the central object. So far the magneto-rotational instability (MRI) is known to play a significant role on the gas accretion mechanism through a magneto-hydro-dynamic (MHD) wave. However, accretion disks with massive central objects such as black holes are believed to be in collisionless plasma state, and MHD approximation should break down. In our research project, we performed a large-scale computer simulation with electromagnetic particle-in-cell code, and found that the accretion rate can be enhanced more than 10 times than the standard MHD accretion disk. Furthermore, we found that high energy particles can be efficiently generated.
|
