现任职务：学术委员会主任

主要研究内容：主要从事活动星系核和VLBI天体物理研究。作为星系宇宙学团组学科带头人，主要开展了活动星系核的射电致密结构和短时标变化的观测研究。利用VLBI观测揭示了一批年轻射电喷流的结构，研究了射电喷流核区结构参数的相关性；用VLBI观测研究了超大质量双黑洞候选体；用南山25米射电望远镜监测了一批射电活动星系核的短时标光变，进行了大样本射电短时标光变的巡天；发现了星系M82中的射电超新星爆发；研究了不同样本中活动星系核喷流功率和吸积盘光度的相关性。

主持、参与科研项目：

获奖情况： 

1. 2017年，中国科学院朱李月华优秀教师奖 

2. 2016年，全国优秀科技工作者 

3. 2014年，《Intra-day variability observations of S5 0716+714 over 4.5 years at 4.8 GHz》获新疆维吾尔自治区第十三届自然科学优秀学术论文二等奖 

4. 2009年，《VLBI observations of nineteen GHz- peaked-spectrum radio sources at 1.6 GHz》获新疆维吾尔自治区第十届自然科学优秀学术论文一等奖 

5. 2009年，中国科学院朱李月华优秀教师奖 

6. 2008年，中国科学院“王宽诚西部学者突出贡献奖” 

7. 2003年，《致密对称源候选体的欧洲VLBI网观测》获新疆维吾尔自治区第七届自然科学优秀学术论文二等奖

代表性科研成果（著作、论文、专利等）：

1. Radio and optical intra-day variability observations of five blazars, Liu X., Yang P.P., Liu J., Liu B.R., et al. , MNRAS, 2017, 469, 2457-2463 

2. VLBA 24 and 43 GHz observations of massive binary black hole candidate PKS 1155+251, Yang X.L., Liu X., Yang J., et al., MNRAS, 471, 1873-1878 

3. NGC 5252: a pair of radio-emitting active galactic nuclei?, Yang X.L., Yang J., Paragi S., Liu X., et al., MNRAS, 2017, 464, L70-L74 

4. Correlation analysis of radio properties and accretion-disk luminosity for low luminosity AGNs, Su R.Z., Liu X., Zhang Z., ApSS, 2017, 362, 3 

5. Variability and Period Analysis for BL Lac AO 0235+164, Fan J.H., Kurtanidze O., Liu Y., Liu X., et al., ApJ, 2017, 837, 45 

6. The physical fundamental plane of black hole activity: revisited, Liu X., Han Z.H., Zhang Z., Ap&SS, 2016, 361, 9 

7. Properties of the Narrow Line Seyfert 1 Galaxies Revisited, Liu X., Yang P.P., Su R.Z., Zhang Z., IJAA, 2016, 6, 166 

8. The adaptive-loop-gain adaptive-scale CLEAN deconvolution of radio interferometric images, Zhang L., Zhang M., Liu X., Ap&SS, 2016, 361, 153 

9. Intra-day variability observations and the VLBI structure analysis of quasar S4 0917+624, Liu X., Mi L.G., Liu J., et al., A&A, 2015, 578, A34 

10.Rapid variability of BL Lac 0925+504: interstellar scintillation induced, Liu J., Liu X., Ap&SS, 2015, 357, 165 

11. Is radio jet power linearly proportional to the product of central black hole mass and Eddington ratio in AGN?, Liu X., Han Z.H., Ap&SS, 2014, 354, 553 

12. Two-year monitoring of intra-day variability of quasar 1156+295 at 4.8 GHz, Liu B.R., Liu X., Marchili N., Liu J., et al., A&A, 2013, 555, A134 

13. Radio observations of the first three-month Fermi-AGN at 4.8 GHz, Liu X., Song H.-G., Liu J., et al., RAA, 2012, 12, 147 

14. Correlations between the peak flux density and the position angle of inner jet in three blazars, Liu X., Mi L.G., Liu B.R., Li Q.W., Ap&SS, 2012, 342, 465 

15. Intra-day variability observations of S5 0716+714 over 4.5 years at 4.8 GHz, Liu X., Song H.G., Marchili N., et al., A&A, 2012, 542, A121 

16. On the influence of the Sun on the rapid variability of compact extragalactic sources, Marchili N., Krichbaum T.P., Liu X., Song H.G., et al., A&A, 2011, 530, A129 

17. Radio lightcurve of SN2008iz in M82 revealed by Urumqi observations, Marchili N., Marti-Vidal I., Brunthaler A., Krichbaum T.P., Muller P., Liu X., Song H.G., et al., A&A, 2010, 509, A34 

18. The follow-up European VLBI Network observations of twelve GPS radio sources at 5 GHz, Cui L., Liu X., Liu J., Song H.-G., Ding Z., A&A, 2010, 518, A23 

19. VLBI observations of nineteen GHz-peaked spectrum radio sources at 1.6 GHz, Liu X., Cui L., Luo W.-F., Shi W.-Z., Song H.-G., A&A, 2007, 470, 97 

20. Seven-frequency VLBI Observations of the GHz-Peaked-Spectrum Source OQ208, Luo W.F., Yang J., Cui L., Liu X., Shen Z.Q., ChJAA, 2007, 7, 611 

(2007年以前论文：略)