Letter

• The X-ray Background from the Warm Gas of the Galactic Halo

  Yan-Jie Xue

  

  383-388

• A Possible Origin of 6.7 GHz Linear Methanol Maser Sources

  Ye Xu

  

  389-394

Research Paper

• A Method of Obtaining the Pitch Angle of Spiral Arms and the Inclination of Galactic Discs

  Jun Ma

  

  395-405

• Radio Observations of Sgr~B2 Xin-Jie Mao and Jiang-Tao Su

  Xin-Jie Mao, Jiang-Tao Su

  

  406-410

• Hardening of Thermal Photons Through Inverse Compton Scattering in Strong Magnetic Fields

  Yi Xu, Hong-Hua Xu

  

  411-420

• Scintillation Dynamic Spectra and Transverse Velocities of Seven Pulsars

  Na Wang, Xin-Ji Wu, R. N. Manchester, Jin Zhang, Aili Yusup, Hong-Bo Zhang

  

  421-432

• On the Light Curves of GRB Afterglows

  Ji-Rong Mao, Jian-Cheng Wang

  

  433-442

• Radio Observations at 232 MHz and Multifrequency Spectral Studies of the SNR HB21

  Xi-Zhen Zhang, L. A. Higgs, T. L. Landecker, Xin-Ji Wu, Shan-Jie Qian

  

  443-452

• On the Lower Energy Cutoff of Nonthermal Electrons in Solar Flares

  Wei-Qun Gan, You-Ping Li, Jin Chang

  

  453-459

• Physical Parameters of a Flare Derived from Multi-line [2mm] 2D Spectroscopy

  Ying Liu, Ming-De Ding

  

  460-468

• Some Observed Results of Solar Radio Spectrometer at [2mm] 4.5--7.5 GHz

  Fu-Ying Xu, Qi-Jun Yao, Xuan Meng, Hong-Ao Wu

  

  469-474

• Anisotropic Beam Model for the Spectral Observations of Radio Burst Fine Structures on 1998 April 15

  V. G. Ledenev, Yi-Hua Yan, Qi-Jun Fu

  

  475-482