2013 Fiscal Year Final Research Report
An observational study of the Magnetically floating loops in the Galactic center
| Project/Area Number |
23740149
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Astronomy
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| Research Institution | Nagoya University |
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Principal Investigator |
TORII KAZUFUMI 名古屋大学, 理学(系)研究科(研究院), 研究員 (20444383)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 銀河系中心部 / 電波天文学 / 磁気流体力学 / 星間物理学 |
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| Research Abstract |
The present study aims to establish the understanding of the Galactic center magnetically floating loops. We carried out detailed and large scale molecular observations toward the Galactic center to identify individual magnetic loops, resulting discoveries of a dozen new loops, many vertically elongated filaments and molecular halo. In addition, we found the molecular counterparts of the Double Helix Nebula likely supported by the strong magnetic field, using the observed data sets, and discussed that the DHN was formed as the result of the magnetic jet emitted from the super massive black hole in the Galactic center "Sgr A*". The impacts on the surrounding medium by the magnetic loops were also studied; e.g., Destructive effects on the small scale grains, and acceleration of the cosmic-ray proton by the second order of the Fermi acceleration, strongly indicating that the magnetically floating loops provide significant impacts on the environment and evolution of the Galactic center.
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