【摘要】：相對于大量X射線輻射顯著而無光學發(fā)射線的活動星系核(AGN),已被光譜證認了的X射線選AGN可能尚處于黑洞顯著增長的高吸積率演化階段,因而具有明顯的光學發(fā)射線特征.利用COSMOS(Cosmological Evolution Survey)天區(qū)深場多波段測光和光譜數(shù)據(jù),在紅移范圍為0.1z1.0的星系群成員星系樣本中尋找具有光學發(fā)射線特征的X射線選AGN.研究發(fā)現(xiàn),星系群中的絕大多數(shù)這類AGN(約96%)是窄發(fā)射線AGN,星系群中AGN比例普遍低于1%,且隨著紅移有微弱的上升趨勢.
[Abstract]:Compared with a large number of active galactic nucleus (AGN), which has significant X-ray radiation and no optical emission, the X-ray selected AGN, which has been confirmed by spectrum, may still be in the stage of hyperaccretion evolution of black hole. Therefore, it has obvious optical emission line characteristics. Based on the deep field multi-band photometric and spectral data of COSMOS (Cosmological Evolution Survey) sky region, the X-ray selected AGN. with optical emission line characteristics is found in the samples of galaxy cluster members with red shift range of 0.1z1.0. It is found that most of these AGN (about 96%) in galactic clusters are generally less than 1% of AGN in narrow-emission AGN, clusters, and have a weak upward trend with the red shift.
【作者單位】： 南京師范大學物理科學與技術(shù)學院;青島科技大學數(shù)理學院;常州大學數(shù)理學院;
【基金】：國家自然科學基金項目(11173016,11433005) 高等學校博士學科點專項科研基金項目(20133207110006)資助
【分類號】：P157.6

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