Suzaku Observation of the CNO Emission Lines from the Cygnus Loop(Chapter 4. Warm and Hot IntraGalactic Medium, The Extreme Universe in the Suzaku Era)

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概要

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• We present the result of the Suzaku observation at the northeastern limb of the Cygnus Loop supernova remnant. The high detection efficiency together with the high spectral resolution of the Suzaku X-ray CCD camera enables us to detect highly-ionized C and N emission lines from the Cygnus Loop for the first time. Since there is a significant plasma structure over the field of view, we selected the softest region based on the ROSAT observation. The data are well characterized by a two-component non-equilibrium ionization model with different values of electron temperature. Abundances of C to Fe are all depleted to typically 0.3 solar except O. We found that the optical depth effect for resonance lines for O plays an important role in the X-ray emission of the Cygnus Loop.

• 理論物理学刊行会の論文
• 2007-12-19

著者

• MIYATA Emi

  Department of Earth and Space Science, Osaka University

• HUGHES John

  Department of Physics and Astronomy, Rutgers University

• KOKUBUN Motohide

  Institute of Space and Astronautical Science

• Morimoto Kouji

  Ri Beam Science Laboratory The Institute Of Physical And Chemical Research Research (riken)

• Hughes John

  Department Of Physics And Astronomy Rutgers University

• Miyata E

  Department Of Earth And Space Science Osaka University

• Miyata Emi

  Department Of Earth And Space Science Graduate School Of Science Osaka University

• Kokubun M

  Institute Of Space And Astronautical Science

• PORTER Scott

  NASA, Goddard Space Flight Center

• MASAI Kuniaki

  Department of Physics, Tokyo Metropolitan University

• Kokubun Motohide

  Ri Beam Science Laboratory The Institute Of Physical And Chemical Research Research (riken)

• Masai Kuniaki

  Department Of Astrophesics Nagoya University

• KOKUBUN Motohide

  Institute of Space and Astronautical Science (ISAS), JAXA

• KOKUBUN Motohide

  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

• MIYATA Emi

  Department of Astrophysics, Faculty of Science, Osaka University

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