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Hercules X-1: Pulsed gamma-rays detected above 150 GeVThe 1.24 second binary pulsar Her X-1, first observed in X-rays in 1971 by UHURU has now been seen as a sporadic gamma ray source from 1 TeV up to at least 500 TeV. In addition, reprocessed optical and infrared pulses are seen from the companion star HZ Herculis. Thus measurements of the Her X-1/HZ Herculis system span 15 decades in energy, rivaling both the Crab pulsar and Cygnus X-3 in this respect for a discrete galactic source.
Document ID
19850025622
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cawley, M. F. (University Coll. Dublin, Ireland)
Fegan, D. J. (University Coll. Dublin, Ireland)
Gibbs, K. G. (Harvard-Smithsonian Center for Astrophysics Honolulu, United States)
Gorham, P. W. (Hawaii Univ. Dublin, Ireland)
Kenny, S. (University Coll. Ames, United States)
Lamb, R. C. (Iowa State Univ. Ames, United States)
Liebing, D. F. (Iowa State Univ. Dublin, Ireland)
Porter, N. A. (University Coll. Honolulu, United States)
Stenger, V. J. (Hawaii Univ.)
Weekes, T. C. (Harvard-Smithsonian Center for Astrophysics)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: 19th Intern. Cosmic Ray Conf - Vol. 1
Subject Category
Space Radiation
Report/Patent Number
OG-2.2-9
Report Number: OG-2.2-9
Accession Number
85N33935
Funding Number(s)
CONTRACT_GRANT: DE-AC03-83ER-40103
CONTRACT_GRANT: DE-AC02-82ER-40063
CONTRACT_GRANT: DE-AC02-80ER-10774
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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