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arXiv 1202.3371astro-ph.HEastro-ph.GA
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复合超新星遗迹MSH 11-62辐射的宽带研究

A Broadband Study of the Emission from the Composite Supernova Remnant MSH 11-62

Patrick Slane, John P. Hughes, Tea Temim, Romain Rousseau, Daniel Castro, Dillon Foight, B. M. Gaensler, Stefan Funk, Marianne Lemoine-Goumard, Joseph D. Gelfan… 展开作者

Patrick Slane, John P. Hughes, Tea Temim, Romain Rousseau, Daniel Castro, Dillon Foight, B. M. Gaensler, Stefan Funk, Marianne Lemoine-Goumard, Joseph D. Gelfand, David A. Moffett, Richard G. Dodson, Joseph P. Bernstein

摘要:

MSH 11-62(G291.1-0.9)是一个复合超新星遗迹,无线电和X射线观测已经确定了它的遗迹壳层以及中央脉冲星风星云。观测结果表明,一个相对年轻的系统正在向低密度区域扩张。在这里,我们提出了一个研究MSH 11-62使用的观测与钱德拉,XMM-牛顿,费米天文台,以及无线电观测从澳大利亚望远镜紧凑阵列(ATCA)。我们确定了一个紧凑的X射线源,似乎是假定的脉冲星,权力的星云,并表明,星云的X射线光谱承担同步辐射损失的签名作为粒子扩散到外层星云。使用费米LAT的数据,我们确定了来自MSH 11-62的伽马射线发射。与密度的限制,从新的X射线测量的残余物,我们模拟的复合系统的演变,以约束的基础脉冲星的属性和伽玛射线发射的起源。

英文摘要:

MSH 11-62 (G291.1-0.9) is a composite supernova remnant for which radio and X-ray observations have identified the remnant shell as well as its central pulsar wind nebula. The observations suggest a relatively young system expanding into a low density region. Here we present a study of MSH 11-62 using observations with the Chandra, XMM-Newton, and Fermi observatories, along with radio observations from the Australia Telescope Compact Array (ATCA). We identify a compact X-ray source that appears to be the putative pulsar that powers the nebula, and show that the X-ray spectrum of the nebula bears the signature of synchrotron losses as particles diffuse into the outer nebula. Using data from the Fermi LAT, we identify gamma-ray emission originating from MSH 11-62. With density constraints from the new X-ray measurements of the remnant, we model the evolution of the composite system in order to constrain the properties of the underlying pulsar and the origin of the gamma-ray emission.

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