TSUNEFUMI MIZUNO

Last Updated :2025/04/03

Affiliations, Positions
Hiroshima Astrophysical Science Center, Associate Professor
E-mail
tsunehiroshima-u.ac.jp
Self-introduction
I have been studying cosmic rays, relativistic charged particles originating outside of the solar system. Instead of measuring cosmic rays directly, I use X-rays and gamma-rays and "observe" cosmic rays at the accelerators (such as black-holes) or in the interstellar space, in order to understand where they are produced and how they propagate through the interstellar space. For this purpose, I have been using Japanese X-ray satellite "Suzaku" and other X-ray satellite data, and all-sky gamma-ray data of international gamma-ray satellite "Fermi". I also aim to measure polarization of X-rays and gamma-rays from black-hole binaries and pulsars in order to obtain information on the structure of accretion disk and magnatic field which is difficult (or impossible) to obtain from the imaging. For this purpose I participated in the international baloon mission "PoGO+", and participate in the X-ray polarimetry mission "IXPE".

Basic Information

Academic Degrees

  • Doctor of Science, The University of Tokyo
  • Master of Science, The University of Tokyo
  • Bachelor of Science, The University of Tokyo

Educational Activity

  • [Bachelor Degree Program] School of Science : Physics : Physics
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program

Research Fields

  • Mathematical and physical sciences;Astronomy;Astronomy

Research Keywords

  • Fermi Satellite

Educational Activity

Course in Charge

  1. 2025, Undergraduate Education, First Semester, Exercises of Physics
  2. 2025, Undergraduate Education, First Semester, Special Study for Graduation A
  3. 2025, Undergraduate Education, Second Semester, Special Study for Graduation B
  4. 2025, Graduate Education (Master's Program) , 1Term, X-ray and Gamma-ray Astrophysics
  5. 2025, Graduate Education (Master's Program) , First Semester, Exercise in Physics I
  6. 2025, Graduate Education (Master's Program) , Second Semester, Exercise in Physics II
  7. 2025, Graduate Education (Master's Program) , First Semester, Special Exsecise in Physics A
  8. 2025, Graduate Education (Master's Program) , Second Semester, Special Exsecise in Physics B
  9. 2025, Graduate Education (Master's Program) , Academic Year, Special Research in Physics
  10. 2025, Graduate Education (Doctoral Program) , Academic Year, Special Research in Physics

Research Activities

Academic Papers

  1. PoGOLite - A high sensitivity balloon-borne soft gamma-ray polarimeter, ASTROPARTICLE PHYSICS, 30(2), 72-84, 200809
    Link to Paper Search Results by DOI
  2. A Monte Carlo method for calculating the energy response of plastic scintillators to polarized photons below 100 keV, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 600(3), 609-617, 20090311
    Link to Paper Search Results by DOI
  3. THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION, ASTROPHYSICAL JOURNAL, 697(2), 1071-1102, 20090601
    Link to Paper Search Results by DOI
  4. ★, FERMI LAT OBSERVATION OF DIFFUSE GAMMA RAYS PRODUCED THROUGH INTERACTIONS BETWEEN LOCAL INTERSTELLAR MATTER AND HIGH-ENERGY COSMIC RAYS, ASTROPHYSICAL JOURNAL, 703(2), 1249-1256, 20091001
    Link to Paper Search Results by DOI
  5. ★, CONSTRAINTS ON THE COSMIC-RAY DENSITY GRADIENT BEYOND THE SOLAR CIRCLE FROM FERMI gamma-RAY OBSERVATIONS OF THE THIRD GALACTIC QUADRANT, ASTROPHYSICAL JOURNAL, 726(2), 20110110
    Link to Paper Search Results by DOI
  6. Suzaku Observation of Two Ultraluminous X-Ray Sources in NGC 1313, Publications of the Astronomical Society of Japan, 59(S1), 257-267, 20070101
  7. Spectral Variability of Ultraluminous Compact X-Ray Sources in Nearby Spiral Galaxies, Astrophysical Journal, 554(2), 1282-1289, 20010601
  8. The Nature of Ultraluminous Compact X-Ray Sources in Nearby Spiral Galaxies, Astrophysical Journal, 535(2), 632-643, 20000601
  9. Beam test of a prototype detector array for the PoGO astronomical hard X-ray/soft gamma-ray polarimeter, Nuclear Instruments and Methods in Physics Research A, 540(1), 158-168, 20050301
  10. Cosmic-Ray Background Flux Model Based on a Gamma-Ray Large Area Space Telescope Balloon Flight Engineering Model, Astrophysical Journal, 614(2), 1113-1123, 20041001
  11. Spectral variability of ultraluminous compact X-ray sources in nearby spiral galaxies, ASTROPHYSICAL JOURNAL, 554(2), 1282-1289, 20010629
    Link to Paper Search Results by DOI
  12. Suzaku observation of two ultraluminous X-ray sources in NGC 1313, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 59, S257-S267, 2007
    Link to Paper Search Results by DOI
  13. ★, FERMI LARGE AREA TELESCOPE STUDY OF COSMIC RAYS AND THE INTERSTELLAR MEDIUM IN NEARBY MOLECULAR CLOUDS, ASTROPHYSICAL JOURNAL, 755(1), 20120810
    Link to Paper Search Results by DOI
  14. ★, SUZAKU OBSERVATION OF THE FERMI CYGNUS COCOON: THE SEARCH FOR A SIGNATURE OF YOUNG COSMIC-RAY ELECTRONS, ASTROPHYSICAL JOURNAL, 803(2), 20150420
    Link to Paper Search Results by DOI
  15. Observation of polarized hard X-ray emission from the Crab by the PoGOLite Pathfinder, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456(1), L84-L88, 20160211
    Link to Paper Search Results by DOI
  16. ★, QUANTIFYING THE INTERSTELLAR MEDIUM AND COSMIC RAYS IN THE MBM 53, 54, AND 55 MOLECULAR CLOUDS AND THE PEGASUS LOOP USING FERMI-LAT GAMMA-RAY OBSERVATIONS, ASTROPHYSICAL JOURNAL, 833(2), 20161220
    Link to Paper Search Results by DOI
  17. ★, X-Ray Studies of the Extended TeV Gamma-Ray Source VER J2019+368, ASTROPHYSICAL JOURNAL, 841(2), 20170601
    Link to Paper Search Results by DOI

Invited Lecture, Oral Presentation, Poster Presentation

  1. How Do We Operate X-ray Satellites? --Proposal, Planning and Operation--, Tsunefumi Mizuno, Annual Meeting of the Japan Society for Aeronautical and Space Science Western Branch, 2015/12/04, With Invitation, Japanese
  2. Study of Cosmic-rays and Interstellar Medium with Cosmic Gamma-ray Observations, Tsunefumi Mizuno, Summer School of Young Researcher Association in Astronomy and Astrophysics, 2015/07/29, With Invitation, Japanese

External Funds

Acceptance Results of Competitive Funds

  1. KAKENHI, 2013, 2015
    Permalink
  2. KAKENHI, Systematic study of cosmic-ray acceleration in supernova remnants using the all-sky survey data in GeV gamma rays, 2010, 2012
    Permalink
  3. KAKENHI, Study of cosmic-ray energy and spatial distribution by observing Galactic diffuse gamma-ray emission, 2009, 2011
    Permalink
  4. KAKENHI, 2008, 2008
    Permalink
  5. KAKENHI, X-ray Image Reconstruction for Study on Astronomical Cosmic-Ray Acceleration Sites and Development of X-ray Polarimeter, 2006, 2008
    Permalink
  6. KAKENHI, Development of an astronomical Polarimeter and study of galactic compact object, 2006, 2008
    Permalink
  7. KAKENHI, Development of Dedicated Telescope for Observation of Transient & Cataclysmic Astronomical Objects by Using 1.5m Infrared Simulator, 2005, 2007
    Permalink
  8. KAKENHI, 2002, 2006
    Permalink
  9. KAKENHI(Grant-in-Aid for Scientific Research (B)), 2017, 2020

Social Activities

Organizing Academic Conferences, etc.

  1. 2015/03, 2015/03
  2. 2017/03, 2017/03