VHE gamma ray emission from Southern Hemisphere X ray binaries

Details VHE gamma ray emission from Southern Hemisphere X ray binaries VHE gamma ray emission from Southern Hemisphere X ray binaries

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..311b&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 1: X Ray Binaries p 311-314 (SEE N90-25711 19-89)

Astronomy and Astrophysics

Astronomy

2

Gamma Ray Astronomy, Gamma Rays, Pulsars, Southern Hemisphere, Stellar Orbits, Stellar Radiation, X Ray Binaries, Centaurus Constellation, Gamma Ray Telescopes, Radiant Flux Density, Scorpius Constellation, Southern Sky

Scientific paper

A search for emission of 300 GeV gamma rays from Sco X-1, Cen X-3 and Vela X-1 was made using the Narrabri (New South Wales, Australia) gamma ray telescope. DC gamma ray emission from Sco X-1 was detected in data taken during 1988 and confirmed with data taken during 1989. There is some evidence that the data is modulated with the 0.787 d orbital period. Observations made of Cen X-3 show evidence for pulsed Very High Energy (VHE) gamma ray emission. The VHE emission is strongest for a few hours around the ascending node in the 2.1 d binary orbit. The time averaged energy flux in VHE gamma rays is estimated. Measurements of Vela X-1 confirm earlier claims and indicate emission of VHE gamma rays.

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