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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >A Super Bubble Candidate in the Galactic Center anda Local Enhancement G 359.77-0.09
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A Super Bubble Candidate in the Galactic Center anda Local Enhancement G 359.77-0.09

机译：银河中心的超级气泡候选人和局部增强G 359.77-0.09

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摘要

A 20' x 16' elliptical ring-like structure has been found near the Galactic center in the narrow energy bandcorresponding to the Ka line from He-like sulfur. In the ring, two diffuse sources are found, a supernova remnantcandidate, G 359.79-0.26, and an unidentified source, G 359.77-0.09. The X-ray spectrum of G 359.77-0.09 issimilar to that of G 359.79-0.26, which can be explained by an absorbed thin thermal plasma model with temper-atures of 0.7 and 1.0 keV. The absorption column densities of these two sources are large (NH = 6.9 x 1022 and4.5 x 1022 cm-2)and are consistent with that of the Galactic center distance. The X-ray spectrum extracted fromthe ring-like structure is also represented by an absorbed thin thermal plasma model (k Te - 0.9 keV). The thermalenergy of the plasma fi ing the ring-like structure is estimated to be 1.0 x 1051 erg. We therefore propose that thetwo sources comprise a s le ring-like object, which is possibly a super bubble with a size of 49 pc x 40 pc in theGalactic center region.
机译：在银河中心附近的窄能带中发现了20'x 16'的椭圆形环状结构，对应于类似He的Ka线。在环上，发现了两个漫射源，一个超新星残留候选物，G 359.79-0.26，一个身份不明的源，G 359.77-0.09。 G 359.77-0.09的X射线光谱类似于G 359.79-0.26的X射线光谱，这可以用温度为0.7和1.0 keV的吸收薄热等离子体模型来解释。这两个源的吸收柱密度很大（NH = 6.9 x 1022和4.5 x 1022 cm-2），并且与银河系中心距离的吸收柱密度一致。从环状结构提取的X射线光谱也由吸收的薄热等离子体模型（k Te-0.9 keV）表示。环形结构的等离子体的热能估计为1.0 x 1051 erg。因此，我们建议这两个源包括一个环状的物体，它可能是银河系中心区域中大小为49 pc x 40 pc的超级气泡。

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