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| Paper: |
An X-Ray Face-on View of the Galactic Center Molecular Clouds
Observed with Suzaku |
| Volume: |
439, The Galactic Center: a Window to the Nuclear Environment of Disk Galaxies |
| Page: |
430 |
| Authors: |
Ryu, S. G.; Koyama, K.; Nobukawa, M.; Fukuoka, R.; Tsuru, T. G. |
| Abstract: |
We present a new methodology to derive positions of the Galactic center molecular clouds (MCs) along the line of sight, as an application study of the Galactic center diffuse X-rays (GCDX). We examined the Suzaku X-ray images and spectra of the GCDX near at MCs of Sgr B and Sgr C, and found that the GCDX can be divided into two parts: one suffers strong absorption by the MCs (NH >1023 H cm–2) and the other does not (NH∼ 6×1022 H cm–2). Assuming that the plasma of the GCDX is a sphere with a uniform volume emissivity around Sgr A*, we quantitatively estimated the line-of-sight positions of the MCs from the flux ratios of the GCDX. We successfully drew a face-on view showing that the MCs near at Sgr B and Sgr C are respectively located at the near and the far sides with respect to Sgr A*. |
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