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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Evidence for recombining plasma in the supernova remnant G346.6-0.2
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Evidence for recombining plasma in the supernova remnant G346.6-0.2

机译：在超新星残余G346.6-0.2中重组血浆的证据

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摘要

We present Suzaku results of the supernova remnant (SNR) G346.6-0.2. The X-ray emission has a center-filled morphology with a size of 6' × 8' within the radio shell. Neither an ionization equilibrium nor non-equilibrium (ionizing) plasma can reproduce the spectra remaining shoulder-like residuals in the 2-4 keV band. These structures are possibly due to a recombination of free electrons to the K-shell of He-like Si and S. The X-ray spectra were well-fitted with a plasma model in a recombination-dominant phase. We propose that the plasma was in a nearly full ionized state at a high temperature of ~5 keV, and then the plasma changed to a recombining phase due to selective cooling of electrons to a lower temperature of ~0.3 keV. G346.6-0.2 would be in an epoch of the recombining phase.
机译：我们展示了超新星遗迹（SNR）G346.6-0.2的朱雀结果。 X射线发射在无线电外壳内的中心填充形态为6'×8'。电离平衡或非平衡（电离）等离子体都无法重现在2-4 keV波段中残留的肩状残留光谱。这些结构可能是由于自由电子重新结合到He状Si和S的K壳层上。X射线光谱与等离子体模型在重组占优势的阶段很好地拟合。我们提出等离子体在〜5 keV的高温下处于几乎完全电离的状态，然后由于电子选择性冷却至〜0.3 keV的较低温度，等离子体变为复合相。 G346.6-0.2将进入重组阶段。

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