Discovery of a recombination dominant plasma: a relic of a giant flare of Sgr A*?
Discovery of a recombination dominant plasma: a relic of a giant flare of Sgr A*?
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发现重组优势等离子体：Sgr A* 巨大耀斑的遗迹？
DOI：
10.1017/s1743921314000908
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
H.
中科院分区：
文献类型：
--
作者：
Nakashima;S.;Nobukawa;M.;Uchida;H.;Tanaka;T.;Tsuru;T.~G.;Koyama;K.;Uchiyama;H.;Murakami;H.
我们利用Suzaku和ASCA的数据发现了类似等离子体发射的流出现象。这些等离子体的大小为∼150pC。值得注意的是，南方等离子体处于复合主导相，这是标准激波加热无法预测的。一种合理的情况是，要么是由于来自SgrA*的强喷流类X射线导致的光致电离，要么是由于大约105年前银河系中心爆发的等离子体的绝热膨胀而导致的快速冷却。
We present the discovery of out-flow like plasma emissions with the Suzaku and ASCA data. Those plasmas have a size of ∼150 pc. Remarkably, the southern plasma is in a recombination dominant phase, which is not predicted by standard shock heating. A plausible scenario is either photoionization due to strong jet-like X-rays from Sgr A* or rapid cooling due to adiabatic expansion of a blowout plasma from the Galactic center about 105 years ago.