Generation of Cosmic Magnetic Fields and Their Influence on Structure Formation
| Project/Area Number |
25287057
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Nagoya University |
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Principal Investigator |
SUGIYAMA Naoshi 名古屋大学, 理学(系)研究科(研究院), 教授 (70222057)
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| Co-Investigator(Kenkyū-buntansha) |
市來 淨與 名古屋大学, 基礎理論研究センター, 講師 (10534480)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2013: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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| Keywords | 宇宙論 / 宇宙磁場 / 宇宙大規模構造 / 構造形成 / 最初期星形成 / 初期宇宙 / 非線形密度揺らぎ / 位相欠陥 |
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| Outline of Final Research Achievements |
We investigate the origin of cosmic magnetic fields and their influence on structure formation in the universe. What we have done are, (1) Evaluate magnetic fields generated from the vector mode perturbations and constrain models from observations. We especially focus on Einstein-aether theory, which is one of modified gravity theories, and topological defects such as global texture and cosmic string. (2) First time thoroughly calculate magnetic field generation due to second order perturbations and find resultant magnetic fields can be a seed of cosmic magnetic fields. (3) Evaluate cosmic magnetic fields generated by radiation emitted from active galactic nuclei’s in the early universe.
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Report
(5 results)
Research Products
(33 results)
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[Presentation] Internal Template2017
Author(s)
市來淨與
Organizer
B-mode from space 2017 workshop
Place of Presentation
McGill University, Canada
Year and Date
2017-01-23
Related Report
Int'l Joint Research / Invited
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[Presentation] CMB観測の現状と展望2014
Author(s)
市来淨與
Organizer
第2回 松江現象論研究会
Place of Presentation
島根県松江市
Year and Date
2014-11-28 – 2014-11-30
Related Report
Invited
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