Measuring magnetic fields in the vicinity of supermassive black holes through radio and X-ray observations

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K14772
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 16010:Astronomy-related
• Research Institution: Osaka University (2020-2023); Institute of Physical and Chemical Research (2019)
• Principal Investigator: Inoue Yoshiyuki 大阪大学, 大学院理学研究科, 准教授 (70733989)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 天文学 / 理論天文学 / 活動銀河核 / 電波天文学 / ブラックホール / 高エネルギー天文学 / X線天文学

Outline of Final Research Achievements

This study aimed to determine the magnetic fields surrounding supermassive black holes through the integration of theoretical and observational approaches. By synthesizing accretion disk theories with radio and X-ray observations, we endeavored to capture coronal synchrotron radiation. With the support of this research project, we successfully confirm the presence of corona synchrotron radiation in nearby active galactic nuclei through spectral analysis, temporal variations, and observations across various objects. We also achieved breakthroughs in clarifying the connections between these magnetic fields and high-energy emissions such as neutrinos and gamma rays. These findings not only enhance our understanding of the fundamental physical processes governing black holes but also contribute significantly to the fields of astrophysics and cosmology. This research paves the way for future explorations into the enigmatic behaviors of black holes and their influential role in the universe.

Free Research Field

宇宙物理学

Academic Significance and Societal Importance of the Research Achievements

本研究は、巨大ブラックホール周辺の磁気活動を明らかにしてきました。ブラックホールから噴き出す相対論的ジェットやブラックホールへのガス降着といった極限物理現象の背後には磁気活動があります。本研究の成果は今後、これらブラックホールにおける極限物理の解明において重要な役割を果たすと期待されます。また、宇宙線活動との関連も示し、ブラックホール近傍の極限物理状態の理解の一助となる研究となりました。