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Kenji Hamaguchi

Photo of KENJI HAMAGUCHI

Kenji Hamaguchi

  • RESEARCHER
  • 301.286.4970
  • NASA/GSFC
  • Mail Code: 662
  • Greenbelt , MD 20771
  • Employer: UNIVERSITY OF MARYLAND BALTIMORE CO

    • Brief Bio

    • 2005 - present: Suzaku Guest Observer Facilities
    • 2004 - 2014: NASA/GSFC Astrobiology Project, Co-investigator
    • 2008 - present: Research Scientist, UMBC/NASA
    • 2005 - 2008: Research Scientist, USRA/NASA
    • 2002 - 2005: NRC Research Fellow (NASA/GSFC)
    • 2001 - 2002: Post-doctoral Fellow of NASDA (currently JAXA, Japan Aerospace Exploration Agency)

      Member
    • American Astronomical Society (AAS)
    • International Astronomical Union (IAU)
    • Astronomical Society of Japan (ASJ)

    Research Interests

    Overview

    I have studied stellar X-ray physics for 20 years using astronomical data obtained with the X-ray satellites, ROSAT, ASCA, Chandra, XMM-Newton, Swift, NuSTAR and Suzaku. My research interest is mass accretion mechanism, formation of newborn stars, evolution of massive stars, and history of star formation in star forming regions. I also developed X-ray CCD detectors and their calibration systems for the Astro-E1 X-ray satellite. I am currently working at the Goddard Center for the Suzaku X-ray observatory.

    Detail

    Personal Web Page

     

    Publications

    Refereed

    Corcoran, M. F., J. Liburd, D. Morris, et al. C. M. Russell, K. Hamaguchi, T. R. Gull, T. I. Madura, M. Teodoro, A. F. Moffat, N. D. Richardson, D. J. Hillier, A. Damineli, and J. H. Groh. 2017. "The 2014 X-Ray Minimum of η Carinae as Seen by Swift." The Astrophysical Journal, 838 (1): 45 [10.3847/1538-4357/aa6347]

    Hamaguchi, K., L. Oskinova, C. M. Russell, et al. R. Petre, T. Enoto, K. Morihana, and M. Ishida. 2016. "Discovery of Rapidly Moving Partial X-ray Absorbers within Gamma Cassiopeiae." The Astrophysical Journal, 832 (2): 140 [10.3847/0004-637x/832/2/140]

    Richardson, N. D., T. I. Madura, L. St-Jean, et al. A. F. Moffat, T. R. Gull, C. M. Russell, A. Damineli, M. Teodoro, M. F. Corcoran, F. M. Walter, N. Clementel, J. H. Groh, K. Hamaguchi, and D. J. Hillier. 2016. "To v_∞ and beyond! The He I absorption variability across the 2014.6 periastron passage of η Carinae." Monthly Notices of the Royal Astronomical Society, 461 (3): 2540-2558 [10.1093/mnras/stw1415]

    Russell, C. M., M. F. Corcoran, K. Hamaguchi, et al. T. I. Madura, S. P. Owocki, and D. J. Hillier. 2016. "Modelling the Central Constant Emission X-ray component of η Carinae." Monthly Notices of the Royal Astronomical Society, 458 (3): 2275-2287 [10.1093/mnras/stw339]

    Teodoro, M., A. Damineli, B. Heathcote, et al. N. Richardson, A. Moffat, L. St-Jean, C. Russell, T. Gull, T. Madura, K. Pollard, F. Walter, A. Coimbra, R. Prates, E. Fern'andez-Laj'us, R. Gamen, G. Hickel, W. Henrique, F. Navarete, T. Andrade, F. Jablonski, P. Luckas, M. Locke, J. Powles, T. Bohlsen, R. Chini, M. Corcoran, K. Hamaguchi, J. Groh, D. Hillier, and G. Weigelt. 2016. "He II λ4686 Emission from the Massive Binary System in η Car: Constraints to the Orbital Elements and the Nature of the Periodic Minima." The Astrophysical Journal, 819 (2): 131 [10.3847/0004-637X/819/2/131]

    Teodoro, M., A. Damineli, B. Heathcote, et al. N. Richardson, A. Moffat, L. St-Jean, C. Russell, T. Gull, T. Madura, K. Pollard, F. Walter, A. Coimbra, R. Prates, E. Fern'andez-Laj'us, R. Gamen, G. Hickel, W. Henrique, F. Navarete, T. Andrade, F. Jablonski, P. Luckas, M. Locke, J. Powles, T. Bohlsen, R. Chini, M. Corcoran, K. Hamaguchi, J. Groh, D. Hillier, and G. Weigelt. 2016. "He II $lambda$4686 Emission from the Massive Binary System in $eta$ Car: Constraints to the Orbital Elements and the Nature of the Periodic Minima." The Astrophysical Journal, 819 (2): 131 [10.3847/0004-637X/819/2/131]

    Hamaguchi, K., M. F. Corcoran, T. R. Gull, et al. H. Takahashi, B. W. Grefenstette, T. Yuasa, M. Stuhlinger, C. M. Russell, A. F. Moffat, N. Sharma, T. I. Madura, N. D. Richardson, J. Groh, J. M. Pittard, and S. Owocki. 2016. "Eta Carinae's Thermal X-Ray Tail Measured with XMM-Newton and NuSTAR." The Astrophysical Journal, 817 (1): 23 [10.3847/0004-637x/817/1/23]

    Pablo, H., N. D. Richardson, A. F. Moffat, et al. M. Corcoran, T. Shenar, O. Benvenuto, J. Fuller, Y. Nazé, J. L. Hoffman, A. Miroshnichenko, J. M. Apellániz, N. Evans, T. Eversberg, K. Gayley, T. Gull, K. Hamaguchi, W.-R. Hamann, H. Henrichs, T. Hole, R. Ignace, R. Iping, J. Lauer, M. Leutenegger, J. Lomax, J. Nichols, L. Oskinova, S. Owocki, A. Pollock, C. M. Russell, W. Waldron, C. Buil, T. Garrel, K. Graham, B. Heathcote, T. Lemoult, D. Li, B. Mauclaire, M. Potter, J. Ribeiro, J. Matthews, C. Cameron, D. Guenther, R. Kuschnig, J. Rowe, S. Rucinski, D. Sasselov, and W. Weiss. 2015. "A Coordinated X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ Orionis Aa. III. Analysis of Optical Photometric (Most) and Spectroscopic (Ground-Based) Variations." The Astrophysical Journal, 809 (2): 134 [10.1088/0004-637x/809/2/134]

    Nichols, J., D. P. Huenemoerder, M. F. Corcoran, et al. W. Waldron, Y. Nazé, A. M. Pollock, A. F. Moffat, J. Lauer, T. Shenar, C. M. Russell, N. D. Richardson, H. Pablo, N. R. Evans, K. Hamaguchi, T. Gull, W.-R. Hamann, L. Oskinova, R. Ignace, J. L. Hoffman, K. T. Hole, and J. R. Lomax. 2015. "A Coordinated X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ Orionis Aa. II. X-Ray Variability." The Astrophysical Journal, 809 (2): 133 [10.1088/0004-637x/809/2/133]

    Corcoran, M. F., J. S. Nichols, H. Pablo, et al. T. Shenar, A. M. Pollock, W. L. Waldron, A. F. Moffat, N. D. Richardson, C. M. Russell, K. Hamaguchi, D. P. Huenemoerder, L. Oskinova, W.-R. Hamann, Y. Nazé, R. Ignace, N. R. Evans, J. R. Lomax, J. L. Hoffman, K. Gayley, S. P. Owocki, M. Leutenegger, T. R. Gull, K. T. Hole, J. Lauer, and R. C. Iping. 2015. "A COORDINATED X-RAY AND OPTICAL CAMPAIGN OF THE NEAREST MASSIVE ECLIPSING BINARY, δ ORIONIS Aa. I. OVERVIEW OF THE X-RAY SPECTRUM ." The Astrophysical Journal, 809 (2): 132 [10.1088/0004-637x/809/2/132]

    Brief Bio

    • 2005 - present: Suzaku Guest Observer Facilities
    • 2004 - 2014: NASA/GSFC Astrobiology Project, Co-investigator
    • 2008 - present: Research Scientist, UMBC/NASA
    • 2005 - 2008: Research Scientist, USRA/NASA
    • 2002 - 2005: NRC Research Fellow (NASA/GSFC)
    • 2001 - 2002: Post-doctoral Fellow of NASDA (currently JAXA, Japan Aerospace Exploration Agency)

      Member
    • American Astronomical Society (AAS)
    • International Astronomical Union (IAU)
    • Astronomical Society of Japan (ASJ)

    Publications

    Refereed

    Corcoran, M. F., J. Liburd, D. Morris, et al. C. M. Russell, K. Hamaguchi, T. R. Gull, T. I. Madura, M. Teodoro, A. F. Moffat, N. D. Richardson, D. J. Hillier, A. Damineli, and J. H. Groh. 2017. "The 2014 X-Ray Minimum of η Carinae as Seen by Swift." The Astrophysical Journal 838 (1): 45 [10.3847/1538-4357/aa6347]

    Hamaguchi, K., L. Oskinova, C. M. Russell, et al. R. Petre, T. Enoto, K. Morihana, and M. Ishida. 2016. "Discovery of Rapidly Moving Partial X-ray Absorbers within Gamma Cassiopeiae." The Astrophysical Journal 832 (2): 140 [10.3847/0004-637x/832/2/140]

    Richardson, N. D., T. I. Madura, L. St-Jean, et al. A. F. Moffat, T. R. Gull, C. M. Russell, A. Damineli, M. Teodoro, M. F. Corcoran, F. M. Walter, N. Clementel, J. H. Groh, K. Hamaguchi, and D. J. Hillier. 2016. "To v_∞ and beyond! The He I absorption variability across the 2014.6 periastron passage of η Carinae." Monthly Notices of the Royal Astronomical Society 461 (3): 2540-2558 [10.1093/mnras/stw1415]

    Russell, C. M., M. F. Corcoran, K. Hamaguchi, et al. T. I. Madura, S. P. Owocki, and D. J. Hillier. 2016. "Modelling the Central Constant Emission X-ray component of η Carinae." Monthly Notices of the Royal Astronomical Society 458 (3): 2275-2287 [10.1093/mnras/stw339]

    Teodoro, M., A. Damineli, B. Heathcote, et al. N. Richardson, A. Moffat, L. St-Jean, C. Russell, T. Gull, T. Madura, K. Pollard, F. Walter, A. Coimbra, R. Prates, E. Fern'andez-Laj'us, R. Gamen, G. Hickel, W. Henrique, F. Navarete, T. Andrade, F. Jablonski, P. Luckas, M. Locke, J. Powles, T. Bohlsen, R. Chini, M. Corcoran, K. Hamaguchi, J. Groh, D. Hillier, and G. Weigelt. 2016. "He II λ4686 Emission from the Massive Binary System in η Car: Constraints to the Orbital Elements and the Nature of the Periodic Minima." The Astrophysical Journal 819 (2): 131 [10.3847/0004-637X/819/2/131]

    Teodoro, M., A. Damineli, B. Heathcote, et al. N. Richardson, A. Moffat, L. St-Jean, C. Russell, T. Gull, T. Madura, K. Pollard, F. Walter, A. Coimbra, R. Prates, E. Fern'andez-Laj'us, R. Gamen, G. Hickel, W. Henrique, F. Navarete, T. Andrade, F. Jablonski, P. Luckas, M. Locke, J. Powles, T. Bohlsen, R. Chini, M. Corcoran, K. Hamaguchi, J. Groh, D. Hillier, and G. Weigelt. 2016. "He II $lambda$4686 Emission from the Massive Binary System in $eta$ Car: Constraints to the Orbital Elements and the Nature of the Periodic Minima." The Astrophysical Journal 819 (2): 131 [10.3847/0004-637X/819/2/131]

    Hamaguchi, K., M. F. Corcoran, T. R. Gull, et al. H. Takahashi, B. W. Grefenstette, T. Yuasa, M. Stuhlinger, C. M. Russell, A. F. Moffat, N. Sharma, T. I. Madura, N. D. Richardson, J. Groh, J. M. Pittard, and S. Owocki. 2016. "Eta Carinae's Thermal X-Ray Tail Measured with XMM-Newton and NuSTAR." The Astrophysical Journal 817 (1): 23 [10.3847/0004-637x/817/1/23]

    Pablo, H., N. D. Richardson, A. F. Moffat, et al. M. Corcoran, T. Shenar, O. Benvenuto, J. Fuller, Y. Nazé, J. L. Hoffman, A. Miroshnichenko, J. M. Apellániz, N. Evans, T. Eversberg, K. Gayley, T. Gull, K. Hamaguchi, W.-R. Hamann, H. Henrichs, T. Hole, R. Ignace, R. Iping, J. Lauer, M. Leutenegger, J. Lomax, J. Nichols, L. Oskinova, S. Owocki, A. Pollock, C. M. Russell, W. Waldron, C. Buil, T. Garrel, K. Graham, B. Heathcote, T. Lemoult, D. Li, B. Mauclaire, M. Potter, J. Ribeiro, J. Matthews, C. Cameron, D. Guenther, R. Kuschnig, J. Rowe, S. Rucinski, D. Sasselov, and W. Weiss. 2015. "A Coordinated X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ Orionis Aa. III. Analysis of Optical Photometric (Most) and Spectroscopic (Ground-Based) Variations." The Astrophysical Journal 809 (2): 134 [10.1088/0004-637x/809/2/134]

    Nichols, J., D. P. Huenemoerder, M. F. Corcoran, et al. W. Waldron, Y. Nazé, A. M. Pollock, A. F. Moffat, J. Lauer, T. Shenar, C. M. Russell, N. D. Richardson, H. Pablo, N. R. Evans, K. Hamaguchi, T. Gull, W.-R. Hamann, L. Oskinova, R. Ignace, J. L. Hoffman, K. T. Hole, and J. R. Lomax. 2015. "A Coordinated X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ Orionis Aa. II. X-Ray Variability." The Astrophysical Journal 809 (2): 133 [10.1088/0004-637x/809/2/133]

    Corcoran, M. F., J. S. Nichols, H. Pablo, et al. T. Shenar, A. M. Pollock, W. L. Waldron, A. F. Moffat, N. D. Richardson, C. M. Russell, K. Hamaguchi, D. P. Huenemoerder, L. Oskinova, W.-R. Hamann, Y. Nazé, R. Ignace, N. R. Evans, J. R. Lomax, J. L. Hoffman, K. Gayley, S. P. Owocki, M. Leutenegger, T. R. Gull, K. T. Hole, J. Lauer, and R. C. Iping. 2015. "A COORDINATED X-RAY AND OPTICAL CAMPAIGN OF THE NEAREST MASSIVE ECLIPSING BINARY, δ ORIONIS Aa. I. OVERVIEW OF THE X-RAY SPECTRUM ." The Astrophysical Journal 809 (2): 132 [10.1088/0004-637x/809/2/132]

                                                                                                                                                                                            
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    • Last Updated: 03/29/2023