Line and Continuum Emission from the Galactic Center. III. Origin of 6.4 keV Line Emission from Molecular Clouds in the Galactic Center

Vladimir Dogiel; Kwong-Sang Cheng; Dmitrii Chernyshov; Aya Bamba; Atsushi Ichimura; Hajime Inoue; Chung-Ming Ko; Motohide Kokubun; Yoshitomo Maeda; Kazuhisa Mitsuda; Noriko Y. Yamasaki

arXiv · 0905.3075

Line and Continuum Emission from the Galactic Center. III. Origin of 6.4 keV Line Emission from Molecular Clouds in the Galactic Center

Vladimir Dogiel·Kwong-Sang Cheng·Dmitrii Chernyshov·Aya Bamba·Atsushi Ichimura·Hajime Inoue·Chung-Ming Ko·Motohide Kokubun·Yoshitomo Maeda·Kazuhisa Mitsuda·Noriko Y. Yamasaki

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Abstract

We analyze the 6.4 keV line and continuum emission from the molecular cloud Sgr B2 and the source HESS J1745-303, which is supposed to be a complex of molecular gas. From the HESS results it follows that Sgr A is a source of high energy protons, which penetrate into molecular clouds producing there a TeV gamma-ray flux. We present arguments that Sgr A may also produce a flux of subrelativistic protons which generate the 6.4 keV line and bremsstrahlung continuum emission from the clouds.

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Vladimir Dogiel, Kwong-Sang Cheng, Dmitrii Chernyshov, Aya Bamba, Atsushi Ichimura, Hajime Inoue, Chung-Ming Ko, Motohide Kokubun, Yoshitomo Maeda, Kazuhisa Mitsuda, Noriko Y. Yamasaki. 2009-05-19. Line and Continuum Emission from the Galactic Center. III. Origin of 6.4 keV Line Emission from Molecular Clouds in the Galactic Center. https://arxiv.org/abs/0905.3075

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