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Millimeter and Submillimeter Studies on the Active Trinity of Gas, Stars, and Black Holes in Seyfert Galaxies

  • Book
  • © 2018

Overview

Authors:
  1. Takuma Izumi

    1. Hawaii Observatory, National Astronomical Observatory of Japan, Mitaka, Japan

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  • Nominated as an outstanding PhD thesis by the Department of Astronomy, The University of Tokyo
  • Includes a concise review of recent millimeter/submillimeter astronomy on active galactic nuclei
  • Focuses on explaining the growth mechanism of supermassive black holes
  • Provides unique guidance on how to use the Atacama Large Millimeter/submillimeter Array in active galactic nuclei research

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (5 chapters)

  1. Front Matter

    Pages i-xiii
    Download chapter PDF

  2. The Active Trinity in the Centers of Galaxies

    • Takuma Izumi
    Pages 1-27

  3. AGN Feedback on the CND-Scale Molecular Gas: Submillemeter HCN Enhancement as a New Extinction Free Energy Diagnostic Tool

    • Takuma Izumi
    Pages 29-69

  4. Non-detection of Another Extinction-Free Proxy of Active Nuclei, Submillimeter Hydrogen Recombination Lines

    • Takuma Izumi
    Pages 71-82

  5. CND-Scale AGN Fueling: Do CNDs Drive the Growth of Supermassive Black Holes?

    • Takuma Izumi
    Pages 83-115

  6. Summary and Future Outlook

    • Takuma Izumi
    Pages 117-121

  7. Back Matter

    Pages 123-145
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Keywords

About this book

This thesis focuses on understanding the growth and formation mechanism of supermassive black holes (SMBHs), an issue it addresses by investigating the dense interstellar medium that is assumed to be a crucial component of the fuel for SMBHs. The thesis also offers unique guidance on using the Atacama Large Millimeter/submillimeter Array (ALMA) in active galactic nuclei (AGN) research.

The author presents the three major findings regarding SMBH formation and growth: (1) The development of a new diagnostic method for the energy sources in galaxies based on submillimeter spectroscopy, which allows identification of accreting SMBHs even in obscured environments, (2) the discovery that the circumnuclear dense gas disk (CND), with a typical size of a few tens of parsecs, which plays a crucial role in governing the growth of SMBHs, and (3) the discovery that the mass transfer budget from the CND to the central SMBHs can be quantitatively understood with a theoretical model incorporating the circumnuclear starburst as a driver of mass transfer. The thesis skillfully reviews these three findings, which have greatly improved our understanding of the growth mechanism of SMBHs.




Authors and Affiliations

  • Hawaii Observatory, National Astronomical Observatory of Japan, Mitaka, Japan

    Takuma Izumi

About the author

Takuma Izumi is a National Astronomical Observatory of Japan (NAOJ) fellow engaged in millimeter/submillimeter investigations of actively mass accreting supermassive black holes (SMBHs). He has particularly studied mass fueling and obscuring mechanisms of those SMBHs in the nearby universe. He is currently also studying the star formation properties of galaxies hosting SMBHs at high redshift universe in order to understand their evolutionary links. He received his B.A. from the School of Science, M.A. in Astronomy and Ph.D. in Astronomy from The University of Tokyo in 2012, 2014 and 2016 respectively. During his M.A., he received a number of prize and awards: 1st prize in the AP-RASC 2013 Student Paper Competition in 2013, and Presidents' and Research Awards for AY 2014 from The University of Tokyo and the School of Science at The University of Tokyo, respectively. From 2014 to 2016, he was awarded a research fellowship for young scientists by the Japan Society for Promotion of Science(JSPS), and his research during his Ph.D. was supported by JSPS.

Bibliographic Information

  • Book Title: Millimeter and Submillimeter Studies on the Active Trinity of Gas, Stars, and Black Holes in Seyfert Galaxies

  • Authors: Takuma Izumi

  • Series Title: Springer Theses

  • DOI: https://doi.org/10.1007/978-981-10-7910-8

  • Publisher: Springer Singapore

  • eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)

  • Copyright Information: Springer Nature Singapore Pte Ltd. 2018

  • Hardcover ISBN: 978-981-10-7909-2Published: 30 January 2018

  • Softcover ISBN: 978-981-13-5679-7Published: 12 January 2019

  • eBook ISBN: 978-981-10-7910-8Published: 23 January 2018

  • Series ISSN: 2190-5053

  • Series E-ISSN: 2190-5061

  • Edition Number: 1

  • Number of Pages: XIII, 145

  • Number of Illustrations: 55 b/w illustrations, 10 illustrations in colour

  • Topics: Astronomy, Observations and Techniques, Astrophysics and Astroparticles, Cosmology, Spectroscopy and Microscopy

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