0320033

We request dedicated INTEGRAL observations of two INTEGRAL selected AGN: IGR J21247+5058 and LEDA170194. Both objects have been discovered in the IBIS survey (first and forthcoming versions). Among a set of 7 similar objects these are the only with poor exposure. Aim of the present proposal is to provide a higher signal to noise ratio as well as broad band spectroscopy by means of all INTEGRAL instruments and/or hopefully in conjunction with an XMM observation for which time has been requested in the latest XMM AO. We also plan to combine all information obtained in the X-ray and gamma-ray domain with observations at other wavebands in order to construct the Spectral Energy Distribution of each source and so establish if they are atypical in some ways with respect to the local AGN X-ray population. In order to achieve our goals we request 300 ks exposure on each source possibly at two different epochs in order to probe source variability. [truncated! Please see actual data for full text]

我们申请对两颗由INTEGRAL（国际伽玛射线天体物理实验室，INTErnational Gamma-Ray Astrophysics Laboratory）筛选出的活动星系核（AGN，Active Galactic Nucleus）IGR J21247+5058与LEDA170194开展专属观测。这两个源均在IBIS（INTEGRAL板载成像仪，Imager on Board the INTEGRAL Satellite）巡天的初版与待发布版本中被发现。在共计7个同类源的样本中，这两颗是仅有的曝光量不足的源。本观测提案的目标是借助INTEGRAL全套载荷仪器获取更高信噪比的宽波段光谱数据，同时希望能结合我们在最新一期XMM（X射线多镜面望远镜，XMM-Newton）天文机会提案中申请到观测时长所对应的XMM观测数据。我们还计划将X射线与伽马射线波段获取的全部观测信息，与其他波段的观测结果进行整合，以构建每颗源的光谱能量分布（SED，Spectral Energy Distribution），进而判断它们相较于本地活动星系核X射线源群体是否存在非典型特性。为达成上述研究目标，我们申请对每颗源开展300千秒的曝光观测，计划分两个不同的观测时段实施，以探测源的光变特性。【文本已截断，请查阅完整原始数据以获取全部内容】