Astronomy and Astrophysics – Astronomy
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328l...9r&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 328, May 1, 1988, p. L9-L12. Research supported by the Wisconsin
Astronomy and Astrophysics
Astronomy
55
Binary Stars, Cerenkov Radiation, Gamma Ray Astronomy, Power Spectra, Pulsars, X Ray Sources, Neutron Stars, Precession
Scientific paper
Her X-1 was observed for 104 hr of good conditions in a search for TeV-range gamma rays, in 1986 May - July, at the Haleakala Gamma Observatory. On May 13 a burst of activity of approximately 15 minutes duration was detected, with a period of 1.23593±0.00018 s. Although this period differs significantly from the pulsar period expected from X-ray observations, it is consistent with measurements of the periodicity of VHE and UHE gamma rays by other observers that summer.
Camerini U.
Finley James P.
Fry W.
Gaidos J.
Hudson J. J.
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