黑洞自转和类星体喷流射电辐射的相关性  

On the Correlation of Black Hole Spin and Radio Jet Radiation of Quasars

作　　者：汪定雄[1] 吴学兵[2] 

机构地区：[1]华中理工大学物理系,武汉430074 [2]中国科学院北京天文台,北京100080

出　　处：《天体物理学报》1999年第2期121-127,共7页

基　　金：国家自然科学基金

摘　　要：利用Ｂｌａｎｄｆｏｒｄ－Ｚｎａｊｅｋ过程，得出了黑洞自转与活动星系核射电噪度的关系.在假设ＡＧＮ喷流的射电功率主要来自于所提取的黑洞旋转能量后，根据Ｆａｌｃｋｅ和Ｂｉｅｒ－ｍａｎｎ提出的喷流－吸积盘耦合机制，估算了ＡＧＮ喷流的最大射电辐射功率．通过与ＰＧ类星体样本中强射电源观测结果的比较，进一步证实强射电类星体除了其喷流方向与视向的夹角很小外，其中心的超大质量黑洞很可能是自转很快的旋转黑洞．onsidering the Blandford-Znajek process, we investigated the relation between theblack hole spin and the radio loudness of AGN. By assuming that the radio power of AGN jetsmainly comes from the energy of black hole spin and adopting the jet-disk coupling picturesuggested by Falcke and Biermann (1995), we estimated the maximum radio luminosity ofAGN jets. In comparison with the observed data of radio loud sources in PG quasar sample,we proved that radio-loud quasars are such a kind of objects that they not only have verysmall inclination angles, but also have very rapidly spinning supermassive black holes intheir centers.

关 键 词：黑洞 吸积盘 喷流 类星体 射电辐射 相关性 

分 类 号：P145.8[天文地球—天体物理] P158[天文地球—天文学]