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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Nature of the unidentified TeV source HESS J1614-518, revealed by Suzaku and XMM-Newton observations
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Nature of the unidentified TeV source HESS J1614-518, revealed by Suzaku and XMM-Newton observations

机译：Suzaku和XMM-Newton观测结果揭示了未知的TeV源HESS J1614-518的性质

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We report on new Suzaku and XMM-Newton results concerning HESS J1614-518, which is one of the brightest extended TeV γ-ray sources and has two regions with intense γ-ray emission. We newly observed the south and center regions of HESS J1614-518 with Suzaku, since the north region, including the position of the 1st brightest peak of the TeV γ-ray emission, has already been observed. No X-ray counterpart was found at the position of the 2nd brightest peak of the TeV γ-ray emission; we estimated the upper limit of the X-ray flux to be 1.6 × 10~(-13) erg cm~(-2) s ~(-1) in the 2-10 keV band. The soft X-ray source Suzaku J1614-5152, which was found at the edge of the field of view in a previous observation, was also detected at the middle of HESS J1614-518. Analyzing the XMM-Newton archival data, we revealed that Suzaku J1614-5152 consists of multiple point sources. The X-ray spectrum of the brightest point source, XMMU J161406.0-515225, can be described by a power-law model with a photon index of Γ = 5.2 ~(-0.5)~(+0.6), or a blackbody model with temperature kT = 0.38_(-0.04)~(+0.04) keV. In the blackbody model, the hydrogen-equivalent column density is almost the same as that of the hard extended X-ray emission, Suzaku J1614-5141, which was found at the 1st peak position. If true, XMMU J161406.0-515225 may be physically related to Suzaku J1614-5141 and HESS J1614-518.
机译：我们报告了有关HESS J1614-518的新的Suzaku和XMM-Newton结果，HESS J1614-518是最亮的扩展TeVγ射线源之一，具有两个发射强烈γ射线的区域。我们新发现了朱雀与HESS J1614-518的南部和中部区域，因为已经观察到北部区域，包括TeVγ射线发射的第一个最亮峰的位置。在TeVγ射线发射的第二个最亮峰的位置没有发现X射线对应物;我们估计在2-10 keV波段X射线通量的上限为1.6×10〜（-13）erg cm〜（-2）s〜（-1）。在HESS J1614-518的中间也检测到了软X射线源Suzaku J1614-5152，它在先前的观察中位于视野的边缘。分析XMM-Newton档案数据，我们发现Suzaku J1614-5152由多个点源组成。最亮点源XMMU J161406.0-515225的X射线光谱可以通过光子指数为Γ= 5.2〜（-0.5）〜（+0.6）的幂律模型或黑体模型来描述温度kT = 0.38 _（-0.04）〜（+0.04）keV。在黑体模型中，当量氢的柱密度与在第一个峰位置发现的硬质扩展X射线发射的朱雀J1614-5141几乎相同。如果为true，则XMMU J161406.0-515225可能与Suzaku J1614-5141和HESS J1614-518物理相关。

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