Astronomy Letters -- April 2002 Volume 28, Issue 4, pp. 207-278 A Chemically Decoupled Nucleus and Inner Polar Ring of the SBb Galaxy NGC 4548 O. K. Sil'chenko pp. 207-216 Full Text: PDF (388 kB) A Possible Formation Mechanism of the Asymmetry in the H2O Maser Emission Line N. A. Silant'ev, E. E. Lekht, J. E. Mendosa-Torres, and A. M. Tolmachev pp. 217-222 Full Text: PDF (237 kB) Searches for the Shell Swept up by the Stellar Wind from Cyg OB2 T. A. Lozinskaya, V. V. Pravdikova, and A. V. Finoguenov pp. 223-236 Full Text: PDF (968 kB) Localization of X-ray Sources in Six Galactic Globular Clusters from Chandra Data M. G. Revnivtsev, S. P. Trudolyubov, and K. N. Borozdin pp. 237-240 Full Text: PDF (199 kB) A Nonlinear Theory of Stellar Wind with Allowance for the Influence of Relativistic Particles D. G. Logunov and I. N. Toptygin pp. 241-250 Full Text: PDF (246 kB) Frequency Dependence of the Scattering Pulse Broadening for the Crab Pulsar A. D. Kuzmin, V. I. Kondrat'ev, S. V. Kostyuk, B. Ya. Losovsky, M. V. Popov, V. A. Soglasnov, N. D'Amico, and S. Montebugnoli pp. 251-256 Full Text: PDF (163 kB) Photometric Variability of the Protoplanetary Nebula LSIV–12°111 V. P. Arkhipova, N. P. Ikonnikova, R. I. Noskova, and G. V. Komissarova pp. 257-260 Full Text: PDF (154 kB) Astrometric Orbits from a Direct Combination of Ground-Based Catalogs with the Hipparcos Catalog G. A. Goncharov and O. V. Kiyaeva pp. 261-271 Full Text: PDF (274 kB) Plasma Drift in the Solar Corona M. M. Molodensky and V. L. Merzlyakov pp. 272-278 Full Text: PDF (329 kB)