<正>A carbon-oxygen white dwarf may explode in a Type Ia supernova by accreting matter from its companion via either Roc......

We report on time-resolved spectroscopic observations of the SU Ursae Majorisdwarf nova, YZ Cnc for over 11 h on two nig......

<正>Using a population synthesis code, we have investigated the formation of symbiotic systems in which the hot componen......

<正>Simultaneous multi-wavelength observations have revealed complex variability in AGNs. To explain the variability we ......