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arXiv 0907.2133astro-ph.GA
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两个多壳层超新星遗迹:Kes79和G352的射电和X射线研究。7 -0.1

Radio and X-ray study of two multi-shell Supernova Remnants: Kes79 and G352.7-0.1

E. Giacani, M. J. S. Smith, G. Dubner, N. Loiseau, G. Castelletti, S. Paron

摘要:

我们调查了两个多壳层星系超新星遗迹(SNRs),Kes 79和G352.7-0.1,以了解这种形态的原因。这项研究是根据新的和再处理的档案VLA观测和XMM-牛顿档案数据进行的。周围的环境是根据HI加拿大银道面巡天、13 ^CO银道环巡天和HI南银道面巡天的数据进行调查的。目前的研究表明,这两个SNRs的整体形态是其各自的祖星的质量损失历史的结果。Kes 79可能是一颗大质量O 9恒星在分子云附近演化的引力坍缩的产物,而G352.7-0.1可能是SNR与来自前身星的不对称风相互作用以及投射效应的结果。在Kes 79中没有发现与X射线脉冲星CX185238.6 +004020有关的射电点源或脉冲星风星云。另一方面,对G352.7-0.1的X射线研究表明,大部分热X射线辐射完全填充在残骸的内部,并起源于加热的喷出物。特征参数,如无线电流量,无线电频谱指数,年龄,距离,冲击速度,初始能量和光度,估计的SNR。

英文摘要:

We investigate two multi-shell galactic supernova remnants (SNRs), Kes79 and G352.7-0.1, to understand the causes of such morphology. The research was carried out based on new and reprocessed archival VLA observations and XMM-Newton archival data. The surrounding was investigated based on data extracted from the HI Canadian Galactic Plane Survey, the 13^CO Galactic Ring Survey and the HI Southern Galactic Plane Survey. The present study revealed that the overall morphology of both SNRs is the result of the mass-loss history of their respective progenitor stars. Kes79 would be the product of the gravitational collapse of a massive O9 star evolving near a molecular cloud and within the precursor's wind-driven bubble, while G352.7-0.1 would be the result of interactions of the SNR with an asymmetric wind from the progenitor together with projection effects. No radio point source or pulsar wind nebula was found associated with the X-ray pulsar CXOU J185238.6+004020 in Kes79. The X-ray study of G352.7-0.1, on its hand, revealed that most of the thermal X-ray radiation completely fills in the interior of the remnant and originates in heated ejecta. Characteristic parameters, like radio flux, radio spectral index, age, distance, shock velocity, initial energy and luminosity, were estimated for both SNRs.

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