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VERITAS: the Very Energetic Radiation Imaging Telescope Array System
T. C. Weekes
The Very Energetic Radiation Imaging Telescope Array System (VERITAS) represents an important step forward in the study of extreme astrophysical processes in the universe. It combi…
Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001
F. Krennrich, H. M. Badran, I. H. Bond +43
Exceptionally strong and long lasting flaring activity of the blazar Markarian 421 (Mrk 421) occurred between January and March 2001. Based on the excellent signal-to-noise ratio o…
ASCA Detection of Pulsed X-ray Emission from PSR J0631+1036
Ken'ichi Torii, Y. Saito, F. Nagase +9
ASCA's long look at the 288 millisecond radio pulsar, PSR J0631+1036, reveals coherent X-ray pulsation from this source for the first time. The source was first detected in the ser…
Phase Dependent Spectral Variability of 4U1907+09
Mallory S. E. Roberts, Peter F. Michelson, Denis A. Leahy +4
We report on ASCA, RXTE, and archival observations of the high mass X-ray binary pulsar 4U1907+09. Spectral measurements of the absorption and flux were made at all phases of the X…