Gravitational potential energy of a pair of overlapping galaxies Farooq Ahmad OriginalPaper Pages: 1 - 9
Self-similar flow behind a spherical shock with varying strength in an inhomogeneous self-gravitating medium S. N. OjhaOnkar Nath OriginalPaper Pages: 11 - 17
Expansion theory for the elliptic motion of arbitrary eccentricity and semi-major axis Mohamed Adel Sharaf OriginalPaper Pages: 19 - 38
The luminosity of red supergiants in the andromeda galaxy Yu. N. EfremovG. R. Ivanov OriginalPaper Pages: 39 - 43
An exact similarity solution in radiation magneto-gas-dynamics for the flows behind a spherical shock wave J. P. VishwakarmaR. C. SrivastavaArun Kumar OriginalPaper Pages: 45 - 52
The evolution of two types of pulsars Zu-Gan DengJie-Hao HuangXiao-Yang Xia OriginalPaper Pages: 53 - 61
An analytic solution for propagation of blast waves in stellar interiors O. S. SrivastavaA. H. KhanD. Singh OriginalPaper Pages: 63 - 72
Effects of rotation and tidal distortions on the periods of adiabatic oscillations of composite models of stars C. MohanS. R. Agarwal OriginalPaper Pages: 73 - 94
Bivariational calculations for radiation transfer in an inhomogeneous participating medium S. A. El WakilH. M. MachaliM. T. Attia OriginalPaper Pages: 95 - 105
Velocity gradients perpendicular to the galactic plane in the solar vicinity G. A. Pellegatti FrancoR. J. Quiroga OriginalPaper Pages: 107 - 122
Nonlinear shift of wave parameters of whistlers in the ionosphere S. N. PaulG. C. DasB. Chakraborty OriginalPaper Pages: 123 - 129
From beyond the Big Bang to the end of the Planck era of the Universe Pavel Voráček OriginalPaper Pages: 131 - 141
The determination of the gravitational potential of arbitrary mass distribution R. Tschaepe OriginalPaper Pages: 149 - 158
Whistlers as a diagnostic technique in the lower ionosphere G. C. DasA. K. SurB. Chakraborty OriginalPaper Pages: 159 - 167
Heat transfer in unsteady MHD couette flow of an electrically conducting, viscous, incompressible rarefied gas H. L. AgrawalR. NathR. P. Singh OriginalPaper Pages: 169 - 180
Apsidal rotation in the eclipsing binary AG Persei Edith J. WoodwardRobert H. Koch OriginalPaper Pages: 187 - 193
Statistical relationship between sunspots and major flares T. Ataç Letter to the Editors Pages: 203 - 208