The New Intermediate Polars from the ROSAT All-Sky Survey
High-energy Spectrum of the Galactic Center Black Hole Sgr A^*
The Magnetic Reversal of the 21st Solar Cycle and LDE-Type Flares
New Observational Facts About Particle Acceleration and Transport During Solar Flares
Real Time Science Displays for the PCA Experiment on the ROSSI X-Ray Timing Explorer
Statistics of Time Histories and Spectral Variability of GRBS