标题： AX J1910.7+0917 和三个新发现的 INTEGRAL 源 显示英文标题

标题： AX J1910.7+0917 and three newly discovered INTEGRAL sources

摘要： 我们利用IBIS/ISGRI望远镜的高灵敏度以及数据处理软件的改进，研究仍不明确的X射线源AX J1910.7+0917的性质，并寻找附近之前未被探测到的天体。 我们分析了AX J1910.7+0917的所有公开INTEGRAL数据，以及一些在该源方向上使用钱德拉、XMM-牛顿和ASCA进行的档案观测数据。 在围绕AX J1910.7+0917的IBIS/ISGRI视场中，我们发现了三个新的源：IGR J19173+0747、IGR J19294+1327和IGR J19149+1036；后者与爱因斯坦源2E 1912.5+1031在位置上一致。 对于前两个源，我们也报告了使用Swift/XRT进行的后续观测结果。 AX J1910.7+0917在X射线中表现出明显的变异性。 其光谱可以用一个吸收（N_H~6x10^(22) cm^(-2)）的幂律（{\Gamma }~1.5）模型加上约6.4 keV处的铁线来很好地描述。 我们还获得了更精确的位置并报告了可能的红外对应体。 目前的数据无法对这些源进行唯一分类。 基于其X射线辐射特性以及对可能的红外对应体的分析，我们探讨了AX J1910.7+0917性质的不同可能性。 显示英文摘要

摘要： We take advantage of the high sensitivity of the IBIS/ISGRI telescope and the improvements in the data analysis software to investigate the nature of the still poorly known X-ray source AX J1910.7+0917, and search for close-by previously undetected objects. We analyze all publicly available INTEGRAL data of AX J1910.7+0917, together with a number of archival observations that were carried out in the direction of the source with Chandra, XMM-Newton, and ASCA. In the IBIS/ISGRI field-of-view around AX J1910.7+0917, we discovered three new sources: IGR J19173+0747, IGR J19294+1327 and IGR J19149+1036; the latter is positionally coincident with the Einstein source 2E 1912.5+1031. For the first two sources, we also report the results of follow-up observations carried out with Swift/XRT. AX J1910.7+0917 features a clear variability in the X-rays. Its spectrum can be well described with an absorbed (N_H~6x10^(22) cm^(-2)) power-law ({\Gamma}~1.5) model plus an iron line at ~6.4 keV. We also obtained a refined position and report on possible infrared counterparts. The present data do not allow for a unique classification of the sources. Based on the property of its X-ray emission and the analysis of a likely infrared counterpart, we investigate different possibilities for the nature of AX J1910.7+0917.