arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.3025astro-ph
收藏

含INTEGRAL的中子星和黑洞低质量X射线双星的硬X射线色

Hard X-ray colours of Neutron Star and Black Hole Low Mass X-ray Binaries with INTEGRAL

Simon E. Shaw, Ada Paizis, Nami Mowlavi, Stephane Paltani, Thierry J. -L. Courvoisier, Arvind Parmar

摘要:

低质量X射线双星(LMXB)的X射线谱在短时间尺度上发生变化,这使得通过模型拟合很难详细地跟踪它们的谱特征。因此,色-色(C-C)图经常被用作替代的、独立于模型的工具来研究这些源的光谱变化。INTEGRAL任务具有高灵敏度、大视场和良好的角分辨率,非常适合于研究LMXB的硬X射线特性。特别是ISGRI成像仪板上的INTEGRAL允许定期监测的来源,在较不经常研究的域以上20千电子伏。在这一过程中,C-C图已经从INTEGRAL公共档案馆的数据进行了搜索的系统差异的黑洞候选人(BH)和中子星(NS)之间的C-C图LMXB使用的矩分析方法。

英文摘要:

The X-ray spectra of Low Mass X-ray Binaries (LMXB) can change on short time-scales, making it difficult to follow their spectral characteristics in detail through model fitting. Colour-colour (C-C) diagrams are therefore often used as alternative, model independent, tools to study the spectral variability of these sources. The INTEGRAL mission, with its high sensitivity, large field of view and good angular resolution, is well suited to study the hard X-ray properties of LMXBs. In particular the ISGRI imager on board of INTEGRAL allows the regular monitoring of the sources in the less frequently studied domain above 20 keV. In this proceeding, C-C diagrams have been made with data from the INTEGRAL public archive; a search is made for systematic differences in the C-C diagrams between black hole candidates (BH) and neutron stars (NS) in LMXBs using a moments analysis method.

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。

↑