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arXiv 1302.2444astro-ph.HE
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1型AGN的INTEGRAL/IBIS完整样品

The INTEGRAL/IBIS Complete Sample of Type 1 AGN

Manuela Molina, L. Bassani, A. Malizia, A. Bazzano, P. Ubertini, A. J. Bird

摘要:

确定活动星系的宽谱(0.1-100 keV)对于理解和区分各种发射模型、估计中心黑洞周围Comptonising/反射区的性质以及获得活动星系核对宇宙X射线背景贡献的可靠描述是至关重要的。尽管过去已经对活动星系核进行了宽波段X射线测量,但这些测量通常并不适用于完整的源样本。从几年前开始,我们利用一组运行中的X射线望远镜的低能数据(并不总是高质量的),对在硬X射线波段(20-40 keV)选取的活动星系核完整样品的0.1-100 keV能谱进行了系统的分析。由于通过XMM-牛顿大型计划获得的数据,我们现在拥有样本中所有源的高质量0.1-10 keV数据;这些数据与INTEGRAL/IBIS和Swift/BAT的高能观测相结合,将使我们能够研究这个完整样本的光谱特性。在这里,特别是,我们报告1型活动星系核取得的进展,特别是集中在连续和它的高能量截止,反射分数,吸收特性和软过剩和温暖的吸收剂在我们的源的存在。更具体地说,我们讨论了4个源IGR J 00333 +6122,Swift J0917.2-6221,GRS 1734-292和NGC 6814的宽带特性,它们可以被认为是我们样本中最具代表性的对象。

英文摘要:

The determination of the broad (0.1-100 keV) spectra of active galaxies is crucial for understanding and discriminating among emission models, for estimating the properties of the Comptonising/reflecting region around the central black hole and for obtaining a firm description of the contribution of AGN to the Cosmic X-ray Background. Although broad-band X-ray measurements of AGN have been made in the past, these did not generally pertain to a complete sample of sources. Since few years, we have started a systematic analysis of the 0.1-100 keV spectra of a complete sample of AGN selected in the hard X-ray band (20-40 keV) using low energy data (not always of good quality) from a set of operating X-ray telescopes. Thanks to data obtained through an XMM-Newton Large Programme, we have now high quality 0.1-10 keV data for all sources in the sample; these combined with high energy observations from INTEGRAL/IBIS and Swift/BAT will allow us to study the spectral properties of this complete sample. Here in particular, we report the progress made on type 1 AGN, focusing in particular on the continuum and its high energy cut-off, the reflection fraction, the absorption properties and the presence of soft excesses and warm absorbers in our sources. More specifically we discuss the broad-band properties of 4 sources IGR J00333+6122, Swift J0917.2-6221, GRS 1734-292 and NGC 6814, which can be considered as the most representative objects of our sample.

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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