Origin of 6.4 keV Line Emission from Molecular Clouds in the Galactic Center

被引：41

作者：

Dogiel, Vladimir ^{[1
,2
]}

Cheng, Kwong-Sang ^{[3
]}

Chernyshov, Dmitrii ^{[2
,4
]}

Bamba, Aya ^{[1
]}

Ichimura, Atsushi ^{[1
]}

Inoue, Hajime ^{[1
]}

Ko, Chung-Ming ^{[5
]}

Kokubun, Motohide ^{[1
]}

Maeda, Yoshitomo ^{[1
]}

Mitsuda, Kazuhisa ^{[1
]}

Yamasaki, Noriko Y. ^{[1
]}

机构：

[1] Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[2] PN Lebedev Inst, Moscow 119991, Russia

[3] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[4] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

[5] Natl Cent Univ, Inst Astron, Jhongli 320, Taiwan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2009年 / 61卷 / 04期

关键词：

Galaxy: center; ISM: molecular clouds: cosmic rays; X-rays: diffuse background; X-RAY-EMISSION; SAGITTARIUS B2 CLOUD; REFLECTION-NEBULA; HI REGIONS; IRON; SUZAKU; IONIZATION; VIEW; PARTICLES; COMPLEX;

D O I：

10.1093/pasj/61.4.901

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：901 / 907

页数：7

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