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arXiv 0906.1073astro-ph.HEastro-ph.GA
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超新星遗迹RX J1713的XMM-牛顿和HESS观测的联合光谱成像分析。

A joint spectro-imaging analysis of the XMM-Newton and HESS observations of the supernova remnant RX J1713.7-3946

F. Acero, J. Ballet, A. Decourchelle, M. Lemoine-Goumard, M. Ortega, E. Giacani, G. Dubner, G. Cassam-Chenai

摘要:

超新星遗迹RX J1713.7-3946(也称为G347.3-0.5)是由同步辐射X射线主导的遗迹类别的一部分。它也是在TeV能量下观察到的少数壳型SNR之一,可以研究SNR冲击下的粒子加速。我们的目标是比较X射线和伽马射线中残余物的空间和光谱特性,以了解TeV发射的性质。这需要在两种能量下以相同的空间尺度来研究遗迹。为了补充残骸的非热谱,我们试图提供一个可靠的估计无线电通量密度。在无线电方面,我们重新访问了ATCA数据,并使用HI和中红外观测来解开非热辐射的热辐射。在X射线中,我们制作了一个新的残骸镶嵌图,并将X射线数据的空间分辨率降低到HESS仪器的分辨率,以便在X射线和伽马射线中以相同的空间尺度进行空间分辨光谱学。径向配置文件,获得调查在这两个能量的发射的扩展。我们发现,部分的无线电发射的SNR轮廓内的热性质。考虑到这一点,我们提供了新的下限和上限的综合同步辐射通量的残余在1.4 GHz的22 Jy和26 Jy分别。在X射线中,我们使用XMM-牛顿获得了RX J1713.7-3946的第一个完整覆盖。在X射线中小尺度下看到的光子指数的空间变化在HESS分辨率下模糊。我们发现了Fx \propto Fg ^[2.41]型X射线通量和伽马射线通量之间的非线性相关。

英文摘要:

The supernova remnant (SNR) RX J1713.7-3946 (also known as G347.3-0.5) is part of the class of remnants dominated by synchrotron emission in X-rays. It is also one of the few shell-type SNRs observed at TeV energies allowing to investigate particle acceleration at SNRs shock. Our goal is to compare spatial and spectral properties of the remnant in X- and gamma-rays to understand the nature of the TeV emission. This requires to study the remnant at the same spatial scale at both energies. To complement the non-thermal spectrum of the remnant, we attempt to provide a reliable estimate for the radio flux density. In radio, we revisited ATCA data and used HI and mid-infrared observations to disentangle the thermal from the non-thermal emission. In X-rays, we produced a new mosaic of the remnant and degraded the spatial resolution of the X-ray data to the resolution of the HESS instrument to perform spatially resolved spectroscopy at the same spatial scale in X- and gamma-rays. Radial profiles were obtained to investigate the extension of the emission at both energies. We found that part of the radio emission within the SNR contours is thermal in nature. Taking this into account, we provide new lower and upper limits for the integrated synchrotron flux of the remnant at 1.4 GHz of 22 Jy and 26 Jy respectively. In X-rays, we obtained the first full coverage of RX J1713.7-3946 with XMM-Newton. The spatial variation of the photon index seen at small scale in X-rays is smeared out at HESS resolution. A non-linear correlation between the X- and gamma-ray fluxes of the type Fx \propto Fg^2.41 is found.

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