Evidence for circumnuclear starbursts in spiral galaxies can take the form of a blue excess near the nucleus, but more frequently (because of dust extinction) H...

The present examination of general relativistic effect on the lag time between continuum and emission line variations in the broad line notes that in the case...

The recently reported microlensing events of the Large Magellanic Cloud (LMC) have caused much excitement, and have been interpreted as due to 'dark objects'...

The influence of rotation and finite size of the radiation source on the orbits of dust particles around stars is analyzed. It is found that there are physical...

An aspect of the missing mass problem in galaxies, not easy to address, is whether the dynamical mass distribution is spherical or greatly flattened, following...

Analysis of data obtained over the years 1980-1985 are analyzed to show that the period of the 160-minute signal is indeed 160.00 minutes. It is demonstrated...