2012 Fiscal Year Final Research Report
Peculiar behavior of ion-electron plasma and pair plasma in blackhole magnetospheres
| Project/Area Number |
21540243
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Kumamoto University |
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Principal Investigator |
KOIDE Shinji 熊本大学, 大学院・自然科学研究科, 教授 (20234677)
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| Project Period (FY) |
2009 – 2012
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| Keywords | ブラックホール磁気圏 / 通常プラズマ / 対プラズマ / 一般化 GRMHD 方程式 |
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| Research Abstract |
We have investigated the peculiar effects of ion-electron (normal)plasma and positron-electron (pair) plasma using generalized general relativistic MHD(GRMHD) equations. It showed clearly that the peculiar effects are limited to Hall andthermo-electromotive force effects. First, it shows Hall effect may become significantfor normal plasmas of gamma-ray bursts and microquasars, however it disappears for pairplasmas. The term of thermo-electromotive force may becomes larger than the classicalresistivity for both normal and pair plasmas of gamma-ray bursts, micro-quasars, andactive galactic nuclei, however, it is not expected to become significant because it willnot cause drastic phenomena like magnetic reconnection, which is caused with resistivity
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