An upper limit on the high-energy gamma-ray emission of VELA X-1

Details An upper limit on the high-energy gamma-ray emission of VELA X-1 An upper limit on the high-energy gamma-ray emission of VELA X-1

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...226..145m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 226, no. 1, Dec. 1989, p. 145-150.

Astronomy and Astrophysics

Astrophysics

1

Eclipsing Binary Stars, Gamma Ray Spectra, Neutron Stars, X Ray Binaries, Cos-B Satellite, Stellar Orbits, Stellar Rotation

Scientific paper

The possibility of high-energy gamma-ray emission from the X-ray binary Vela X-1 was investigated by analyzing the COS-B satellite observations, using the COS-B X-ray detector for a phase coherent analysis in the search of rotational periodicity. The rotational upper limit is compared to the X-ray, TeV, and PeV fluxes reported by Chodil et al. (1967), North et al. (1984), and Protheroe et al. (1984), respectively. It was found that, under certain conditions, the upper limit determined here is not inconsistent with the reports of TeV and PeV emission.

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