| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
We studied the gas structure around the protobinary stars by using numerical simulations with the AMR method to locally resolve the periphery of binary stars. In this study, we investigated two models, the fluid model, and the MHD model. The MHD model reproduces the spiral arms extending from each disk and asymmetric structure in the circumstellar disk. The newly developed Boris-HLLD method allows us to compute the MHD model in a feasible time. The magnetic field causes relatively a slow outflow from the circumstellar disk and relatively fast outflows from the two circumstellar disks. Recent ALMA observations have also discovered these structures.
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