浩瀚星空，奥秘无限。5月8日下午3点，在物理楼南408，顺着李珂伽同学的指引，我们共同领略了星空的神奇。李珂伽同学是本期“萃英”研究生学术沙龙的主讲人，天文学系06级博士生，师从乔国俊老师和徐仁新老师，主要研究高能天体物理。他科研表现出色，已发表文章数篇。
报告结束后，他认真回答了同学的提问，在科研工作方面与在场的同学进行了深入的交流，并总结了自己的科研心得：不要着急发表文章, 给自己一点时间成长起来。认定一个好的方向要坚持做下去。
主 讲 人：李柯伽研究方向：高能天体物理报告题目：脉冲星探测非爱因斯坦引力波及引力理论检验沙龙时间：2009年5月8日星期五15:00—17:00沙龙地点：物理楼南408报告人简历：1999—2003 北京大学物理学院（本科）
Pulsar Timing as a Probe of Non-Einsteinian Polarizations of Gravitational Waves
Lee, K. J.; Jenet, F. A.; Price, Richard H.
2008, The Astrophysical Journal, 685, 1304
影响因子：6.405
TEMPO2, a new pulsar timing package. III: Gravitational wave simulation
G.B. Hobbs, F. A. Jenet, K.J.Lee, J. P. W. Verbiest, D. Yardley, R. Manchester, A. Lommen, W. Coles, R. Edwards, C. Shettigara
2009, Monthly Notices of the Royal Astronomical Society,
影响因子: 5.249
Gravitational wave detection using pulsars: status of the Parkes Pulsar Timing Array project
Hobbs, G. B.; Bailes, M.; Bhat, N. D. R.; Burke-Spolaor, S.; Champion, D. J.; Coles, W.; Hotan, A.; Jenet, F.; Kedziora-Chudczer, L.; Khoo, J.; Lee, K. J.; Lommen, A.; Manchester, R. N.; Reynolds, J.; Sarkissian, J.; van Straten, W.; To, S.; Verbiest, J. P. W.; Yardley, D.; You, X. P.
2009, Publications of the Astronomical Society of Japan
影响因子: 1.4
刚性转子双端动平衡
李柯伽.; 廖凯; 曹帙峰; 李昆. 魏明霞
2007, 水利电力机械, 29卷， 第3期
本文为中文刊物， 非SCI.
An Annular Gap Acceleration Model for γ-ray Emission of Pulsars
Qiao, Guo-Jun; Lee, Ke-Jia; Zhang, Bing; Wang, Hong-Guang; Xu, Ren-Xin
2007, Chinese Journal of Astronomy & Astrophysics, Vol. 7, p. 496-502
影响因子: 0.652
PSR B2111+46: a test of the inverse Compton scattering model of radio emission
Zhang, H.; Qiao, G. J.; Han, J. L.; Lee, K. J.; Wang, H. G.
2007, Astronomy & Astrophysics, 465, 525-531
影响因子: 4.259
Detecting the Stochastic Gravitational Wave Background Using Pulsar Timing
F. A. Jenet,; G.B. Hobbs, K. J. Lee, R. N. Manchester.
2005, The Astrophysical Journal, 625L, 123J
影响因子：6.308
On the electrodynamics of counter stream in pulsar’s inner annular cap region
Lee, K. J.; Qiao, G. J.; Wang, H. G.; Xu, R. X.
2008, Advances in Space Research, Volume 41, Issue 1, p. 180-182.
影响因子：0.774
A study on emission geometry and the separation of peaks in the γ-ray pulse profiles of pulsar
K.J. Lee, G.J. Qiao, H.G. Wang and R.X. Xu
2006, Advances in Space Research, Volumn 37， Issue 10， p. 1988-1991
影响因子：0.774
A Model for the Challenging ``Bi-drifting'' Phenomenon in PSR J0815+09
Qiao, G. J.; Lee, K. J.; Zhang, B.; Xu, R. X.; Wang, H. G., 2004
2004, The Astrophysical Journal Letter,616L, 127
影响因子6.237
The Inner Annular Gap for Pulsar Radiation: Gamma-Ray and Radio Emission
Qiao, G. J.; Lee, K. J.; Wang, H. G.; Xu, R. X.; Han, J. L., 2004
2004, The Astrophysical Journal Letter, 606L, 49
影响因子6.237
Radio and γ-ray emissions from pulsars: possible observational tests
Qiao, G. J.; Lee, K. J.; Wang, H. G.; Xu, R. X.; Zhang, B.
ASTROPHYSICS OF COMPACT OBJECTS: International Conference on Astrophysics of Compact Objects. AIP Conference Proceedings, Volume 968, pp. 115-120 (2008)
脉冲星和引力波
李柯伽,乔国俊,徐仁新,张承民,朱宗宏,王洪光
香山科学会议报告，2006, 香山科学会议主编， ISBN: 978780209385
A Model of Pulsar Radio and Gamma-ray Emissions
Qiao, G. J.; Lee, K. J.; Wang, H. G.; Xu, R. X.
The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held 1-5 November, 2005 in Sejong University, Seoul, Korea. Edited by Y.W. Kang, H.-W. Lee, K.-C. Leung, and K.-S. Cheng.
Inner Annular Gap and Related Topics
Lee, K. J.; Qiao, G. J.; Wang, H. G.; Zhang, B.; Xu, R. X.
Chinese Journal of Astronomy and Astrophysics, Supplement, Volume 6, Issue S2, Proceedings of the 2005 Lake Hanas International Pulsar Symposium. Editors: N. Wang, R. N. Manchester, B. J. Rickett and A. Esamdin., p.120-125
影响因子: 0.652
A Joint Model for Radio and γ-ray Emission from Pulsars
Qiao, G. J.; Lee, K. J.; Wang, H. G.; Xu, R. X., 2003
High Energy Processes and Phenomena in Astrophysics, Proceedings of the 214th Symposium of the International Astronomical Union held at Suzhou, China, 6-10 August, 2002. Edited by X.D. Li, V. Trimble, and Z.R. Wang. Published on behalf of the IAU by the Astronomical Society of the Pacific, 2003., p.167
Radio and Gamma-ray Emission from Pulsars
Qiao, G. J.; Lee, K. J.; Wang, H. G.; Xu, R. X., 2002
Radio Pulsars, ASP Conference Proceedings, Vol. 302. Held 26-29 August 2002 at Mediterranean Agronomic Institute of Chania, Crete, Greece. Edited by Matthew Bailes, David J. Nice and Stephen E. Thorsett. San Francisco: Astronomical Society of the Pacific, 2003. ISBN: 1-58381-151-6, p.183
A Further Investigation on the Central Beam of PSR B1237+25
Qiao, G. J.; Li, K. J.; Wang, H. G.; Xu, R. X.; Liu, J. F., 2002
Proceedings of Sino-Germany Radio Astronomy Conference Radio Studies of Galactic Objects, Galaxies and AGNs, held 18-25 July, 2002 in Xi'an, China. Edited by J.L. Han, X.H. Sun, J. Yang, and R. Wielebinski. Published in Supplement Issue, Acta Astronomica Sinica, Vol. 44., p.230-234
Magnetosphere Structure and the annular gap model of pulsars
G.J. Qiao, K.J.Lee, H.G. Wang and R.X.Xu
Turbulence, Dynamos, Accretion Disks, Pulsars and Collective Plasma Processes, India, 2008. Edited by Hasan, Gangadhara, Krishan. Published by Springer
报告摘要：爱因斯坦的广义相对论预言了两种引力波的偏振模式. 然而一般的引力理论预言多达六种的偏振模式. 地面激光干涉仪一般被设计成探测广义相对论体系中的引力波, 因此对于探测其他偏振模式的引力波将无能为力. 我们发现利用脉冲星阵列将可以探测其他引力理论的引力波. 我们构造了一般的引力波的数学基础, 在这个基础上我们计算这些不同模式的引力波对脉冲星到达时间的影响. 我们发现如果能够获得5年100ns精度的脉冲星数据, 将有可能探测到双黑洞背景的引力波.
