Abstract

view Abstract Citations (18) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Anomalous Periodicity in the Very High Energy Gamma-Ray Sources Slane, P. ; Fry, W. F. Abstract Evidence for anomalous periodicity in TeV gamma-rays that is about 0.1 percent shorter than the X-ray period, has been observed from Her X-1. It is suggested that such periodicity may result from the interaction of a broad particle beam with target matter removed from the accretion disk by instabilities at the disk/magnetosphere interface. Such target matter will initially travel in a Keplerian orbit about the pulsar. Very high energy gamma-rays are observed only when the target matter is between the neutron star and the observer. As such, the gamma-rays are observed to be pulsed at the period of the Keplerian orbit. Publication: The Astrophysical Journal Pub Date: July 1989 DOI: 10.1086/167670 Bibcode: 1989ApJ...342.1129S Keywords: Gamma Ray Astronomy; Pulsars; X Ray Binaries; Accretion Disks; Kepler Laws; Neutron Stars; Stellar Magnetospheres; Stellar Mass Accretion; Stellar Orbits; Space Radiation; GAMMA RAYS: GENERAL; RADIATION MECHANISMS; STARS: INDIVIDUAL CONSTELLATION NAME: HERCULES X-1 full text sources ADS | data products SIMBAD (1)

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