I have broad interests in astronomy and astrophysics. There are so many fascinating things in the universe. It is fun to be an astronomer and astrophysicist!

21cm Cosmology

• Radiative Transfer Effect on Ultraviolet Pumping of the 21cm Line in the High Redshift Universe
  Leonid Chuzhoy & Zheng Zheng, ApJ, 670, 912 (2007)
• Lensing of 21cm Absorption "Halos" of z~20-30 First Galaxies
  Pengjie Zhang, Zheng Zheng & Renyue Cen, MNRAS, 382, 1087 (2007)

Gamma-Ray Bursts, Pulsars

• Deducing the Lifetime of Short Gamma-Ray Burst Progenitors from Host Galaxy Demography
  Zheng Zheng & Enrico Ramirez-Ruiz, ApJ, 665, 1220 (2007)
• Is Gamma-ray Absorption by Induced Electric Fields Important in the Pulsar Magnetospheres?
  Zheng Zheng, Bing Zhang, & G.J. Qiao, A&A, 334, L49 (1998)

Microlensing

• Microlensing of Circumstellar Disks
  Zheng Zheng & Brice Ménard, ApJ, 635, 599 (2005)
• Superluminal Caustics of Close, Rapidly-Rotating Binary Microlenses
  Zheng Zheng & Andrew Gould, ApJ, 541, 728 (2000)

AGNs, ULIRGs, and SuperMassive Black Holes

• The Most Massive Black Holes in the Universe: Effects of Mergers in Massive Galaxy Clusters
  Jaiyul Yoo, Jordi Miralda-Escude, David H. Weinberg, Zheng Zheng, & Christopher W. Morgan, ApJ, 667, 813 (2007)
• An HST Surface Photometric Study of Ultraluminous Infrared Galaxies
  Z. Zheng, H. Wu, S. Mao, X.-Y. Xia, Z.-G. Deng, & Z.-L. Zou, A&A, 349, 735 (1999)
• Ultraluminous IRAS Galaxy 10026+4347
  X.-Y. Xia, S. Mao, H. Wu, Z. Zheng, Th. Boller, Z.-G. Deng, & Z.-L Zou, A&A, 341, L13 (1999)

Star Counts and Galactic Structure

• M Dwarfs from Hubble Space Telescope Star Counts. V. The I-band Luminosity Function
  Zheng Zheng, Chris Flynn, Andrew Gould, John N. Bahcall, & Samir Salim, ApJ, 601, 500 (2004)
• M Dwarfs from Hubble Space Telescope Star Counts. IV.
  Zheng Zheng, Chris Flynn, Andrew Gould, John N. Bahcall, & Samir Salim, ApJ, 555, 393 (2001)

Miscellaneous

• Constraints on Radiative Dark-Matter Decay from the Cosmic Microwave Background
  Le Zhang, Xuelei Chen, Marc Kamionkowski, Zongguo Si, & Zheng Zheng, PRD, 76, 061301 (2007)
• Intermediate-Band Surface Photometry of the Edge-on Galaxy NGC 4565
  Wu, Hong, et al., AJ, 123, 1364 (2002)
• Multiwavelength Monitoring of the Narrow-Line Seyfert 1 Galaxy Arakelian 564. III. Optical Observations and the Optical-UV-X-Ray Connection
  O. Shemmer, et al., ApJ, 561, 162 (2001)
• Spatially Resolved Spectrophotometry of M81: Age, Metallicity, and Reddening Maps
  Kong, Xu, et al., AJ, 119, 2745 (2000)
• Calibration of the BATC Survey: Methodology and Accuracy
  Yan, Haojing, et al., PASP, 112, 691 (2000)
• Deep Intermediate-Band Surface Photometry of NGC 5907
  Zhongyuan Zheng, et al., AJ, 117, 2757 (1999)