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arXiv 1001.4014astro-ph.HE
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亮NS LMXB的光谱演化

Spectral evolution of bright NS LMXBs

A. Paizis, R. Farinelli, L. I. Mainardi, L. Titarchuk

摘要:

理论和观测的支持表明,中子星LMXB的光谱演化,包括瞬态硬X射线尾巴,可以解释之间的相互作用热和整体运动康普顿。在这个框架中,我们开发了一个新的模型的X射线光谱拟合XSPEC包,它考虑到热和动态(即散装)康普顿化,CompTB的影响。使用INTEGRAL卫星的数据,我们测试了我们的模型的持续低磁场明亮的中子星低质量X射线双星样品的宽带光谱,覆盖不同的光谱状态。本文介绍了亮光源GX 5-1的情况。特别注意的是,我们解释的框架中的散装运动康普顿化过程的瞬态幂律状硬X射线(30千电子伏以上)的尾巴,定性描述的物理条件的环境中的最内层的系统。

英文摘要:

Theoretical and observational support suggests that the spectral evolution of neutron-star LMXBs, including transient hard X-ray tails, may be explained by the interplay between thermal and bulk motion Comptonization. In this framework, we developed a new model for the X-ray spectral fitting XSPEC package which takes into account the effects of both thermal and dynamical (i.e. bulk) Comptonization, CompTB. Using data from the INTEGRAL satellite, we tested our model on broad band spectra of a sample of persistently low magnetic field bright neutron star Low Mass X-ray Binaries, covering different spectral states. The case of the bright source GX 5-1 is presented here. Particular attention is given to the transient powerlaw-like hard X-ray (above 30 keV) tail that we interpret in the framework of the bulk motion Comptonization process, qualitatively describing the physical conditions of the environment in the innermost part of the system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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