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14 papers · 1 filter
Search for TeV Counterparts of Gamma-Ray Bursts with the HEGRA Experiment
H. Krawczynski, B. Funk, the HEGRA collaboration +7
The HEGRA experiment is an air shower detector system for the study of neutral and charged cosmic rays in the energy range between 500 GeV to 10 PeV. Here we give an overview of ho…
High Energy Continuum Spectra from X-Ray Binaries
S. N. Zhang
A variety of high energy (>1 keV) spectra have been observed in recent years from Black Hole (BH) and Neutron Star (NS) X-ray Binaries (XB). Some common physical components exist b…
Broad band high energy observations of the superluminal jet source GRO J1655-40 during an outburst
S. N. Zhang, K. Ebisawa, R. Sunyaev +7
The X-ray/radio transient superluminal jet source GRO J1655-40 was recently suggested to contain a black hole from optical observations. Being a relatively close-by system (d \sim…
Testing the Dipole and Quadrupole Moments of Galactic Models
Michael S. Briggs, William S. Paciesas, Geoffrey N. Pendleton +6
If gamma-ray bursts originate in the Galaxy, at some level there should be a galactic pattern in their distribution on the sky. We test published galactic models by comparing their…
Evidence from quasi-periodic oscillations for a millisecond pulsar in the low mass x-ray binary 4U 0614+091
E. Ford, P. Kaaret, M. Tavani +6
We have detected quasi-periodic oscillations (QPOs) near 1 kHz from the low mass X-ray binary 4U 0614+091 in observations with XTE. The observations span several months and sample…
X-ray Variability of Cygnus X-1 In Its Soft State
W. Cui, S. N. Zhang, K. Jahoda +4
We reported previously that for Cyg X-1 there is a settling period following the transition from hard to soft state (astro-ph/9610071). During the transiton, The low energy spectru…