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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Discovery of Diffuse Hard X-Ray Emission from the Vicinity of PSR J1648-4611 with Suzaku
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Discovery of Diffuse Hard X-Ray Emission from the Vicinity of PSR J1648-4611 with Suzaku

机译：通过朱雀从PSR J1648-4611附近发现漫射硬X射线发射

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We observed the pulsar PSR J1648-4611 with Suzaku. Two X-ray sources, Suzaku J1648-4610 (Src A) and Suzaku J1648-4615 (Src B), were found in the field of view. SrcA is coincident with the pulsar PSR J1648-4611, which was also detected by the Fermi Gamma-ray Space Telescope. A hard-band image indicates that SrcA is spatially extended. We found point sources in the vicinity of SrcA by using a Chandra image of the same region, but the point sources have soft X-ray emission, and cannot explain the hard X-ray emission of Src A. The hardband spectrum of SrcA can be reproduced by a power-law model with a photon index of 2.0_(0.7)~(+0.9). The X-ray flux in the 2–10 keV band is 1.4 × 10~(-13) erg cm~(-2) s~(-1). The diffuse emission suggests a pulsar wind nebula around PSR J1648-4611, but the luminosity of SrcA is much larger than that expected from the spin-down luminosity of the pulsar. Parts of the very-high-energy γ-ray emission of HESS J1646-458 may be powered by this pulsar wind nebula driven by PSR J1648-4611. Src B has soft emission, and its X-ray spectrum can be described by a powerlaw model with a photon index of 3.0_(-0.8)~(+1.4). The X-ray flux in the 0.4–10 keV band is 6.4 × 10~(-14) erg s~(-1) cm~(-2). No counterpart for Src B has been found in the literature
机译：我们用朱雀观察了脉冲星PSR J1648-4611。在视野中发现了两个X射线源，朱雀J1648-4610（Src A）和朱雀J1648-4615（Src B）。 SrcA与脉冲星PSR J1648-4611一致，后者也被费米伽马射线太空望远镜检测到。硬带图像指示SrcA在空间上扩展。我们通过使用相同区域的Chandra图像在SrcA附近发现了点源，但是这些点源具有柔和的X射线发射，并且不能解释Src A的硬X射线发射。由光子指数为2.0_（0.7）〜（+0.9）的幂律模型重现。 2–10 keV波段的X射线通量为1.4×10〜（-13）erg cm〜（-2）s〜（-1）。弥散发射表明在PSR J1648-4611周围有一个脉冲星云，但是SrcA的光度比从脉冲星的旋转光度预期的要大得多。 HESS J1646-458的超高能γ射线发射的一部分可能由PSR J1648-4611驱动的脉冲星云提供动力。 Src B具有软发射，其X射线光谱可以用光子指数为3.0 _（-0.8）〜（+1.4）的幂律模型来描述。在0.4–10 keV波段的X射线通量为6.4×10〜（-14）erg s〜（-1）cm〜（-2）。文献中未发现Src B的对应物

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