Probing the accretion-jet physics with the radio/X-ray correlation

摘要：

Recent observations on both microquasars and AGNs with radio and X-ray telescopes have revealed remarkable radio/X-ray correlation of these objects. Because the radio and X-ray emissions are mainly emitted from jet and accretion flow, the radio/X-ray correlation can be used to probe the accretion-jet physics in these accreting black hole systems. Using a uniform broad line SDSS AGN sample, we derived the black hole fundamental plane relationship among the 1.4GHz radio luminosity (Lr), 0.1-2.4keV X-ray luminosity (Lx), and black hole mass (M). We found from our sample that the fundamental plane relation has a very weak dependence on the black hole mass, and a tight correlation also exists between the Eddington luminosity scaled X-ray and radio luminosities for the radio quiet subsample. In addition, we noticed that radio-loud AGNs have steeper power-law slope in the radio/X-ray correlation than radio-quiet AGNs. This is mainly due to the different origin of X-ray emissions in radio- loud and radio-quiet AGNs. We discussed thetheoretical interpretations of these results and the similarity in the radio/X-ray correlation between microquasars and AGNs.

关键词： Accretion black hole microquasar active galactic nuclei

作者: Xue-Bing Wu R. Wang Z. Y. Li M. Z. Kong

作者单位: Department of Astronomy, Peking University, Beijing 100871, China Department of Physics, Hebei Normal University, Shijiazhuang 050016, China

会议类型: 国际会议

会议名称: 紧凑型物体的天体物理学国际会议(International Conference on Astrophysics of Compact Objects)

会议地点: 安徽黄山

会议语种:英文

页码: 355-360

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）