Jules P. Halpern

• "Monitoring MRK 509
• Diffuse emission and pathological Seyfert spectra
• EGRET sources at intermediate galactic latitude
• International ultraviolet explorer observing program, ninth episode
• Multiwavelength observations of unidentified high energy gamma-ray sources
• ROSAT
• ROSAT observation program
• The Geminga pulsar
• Timing the Geminga pulsar with high-energy gamma-rays
• Ultraviolet observations of selected astronomical sources
• Ultraviolet observations of selected astronomical sources
• Was 49