2017 Fiscal Year Final Research Report
The polarity reversals in the stars
| Project/Area Number |
26400234
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Astronomy
|
|---|
| Research Institution | Kyoto Sangyo University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2014-04-01 – 2018-03-31
|
| Keywords | 磁極反転 / 恒星 / マクロ・スピン / 円偏光観測 |
|---|
| Outline of Final Research Achievements |
In the theoretical research, we have proposed the three-dimensional macro-spin model that describes the essence of the dynamo-effects in planets and stars. This is a generalization of our previous macro-spin model. We have clarified the conditions in which the magnetic poles have high possibility to reverse. We submitted a paper to a journal.
VESPolA is a high dispersion spectro-polarimeter, mounted on the 1.3m Araki telescope at Koyama Astronomical Observatory of Kyoto Sangyo University. In the device development, we introduced a new circular polarization mode to the VESPolA and raised the resolution from R = 8,000 to R = 25,000. Thus we haveestablished a novel method which enables very efficient data analysis.
In the observational research, ten target stars have been tested, and the long-term observation of the magnetic field polarity for the four targets is now continuing.
|
| Free Research Field |
理論天体物理学
|
